Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

178 files changed, 2221 insertions, 1306 deletions

diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild
index 22cd0d55a8..571f260b08 100644
--- a/arch/powerpc/Kbuild
+++ b/arch/powerpc/Kbuild
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
-subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
+subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -Wa,--fatal-warnings
+subdir-asflags-$(CONFIG_PPC_WERROR) := -Wa,--fatal-warnings
 
 obj-y += kernel/
 obj-y += mm/
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1c4be33736..c88c6d46a5 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -137,6 +137,7 @@ config PPC
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_HUGEPD			if HUGETLB_PAGE
 	select ARCH_HAS_KCOV
+	select ARCH_HAS_KERNEL_FPU_SUPPORT	if PPC64 && PPC_FPU
 	select ARCH_HAS_MEMBARRIER_CALLBACKS
 	select ARCH_HAS_MEMBARRIER_SYNC_CORE
 	select ARCH_HAS_MEMREMAP_COMPAT_ALIGN	if PPC_64S_HASH_MMU
@@ -156,6 +157,7 @@ config PPC
 	select ARCH_HAS_UACCESS_FLUSHCACHE
 	select ARCH_HAS_UBSAN
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
+	select ARCH_HAVE_EXTRA_ELF_NOTES        if SPU_BASE
 	select ARCH_KEEP_MEMBLOCK
 	select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE	if PPC_RADIX_MMU
 	select ARCH_MIGHT_HAVE_PC_PARPORT
@@ -236,7 +238,7 @@ config PPC
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS	if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32
 	select HAVE_EBPF_JIT
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS
-	select HAVE_FAST_GUP
+	select HAVE_GUP_FAST
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_FUNCTION_ARG_ACCESS_API
 	select HAVE_FUNCTION_DESCRIPTORS	if PPC64_ELF_ABI_V1
@@ -285,7 +287,7 @@ config PPC
 	select IOMMU_HELPER			if PPC64
 	select IRQ_DOMAIN
 	select IRQ_FORCED_THREADING
-	select KASAN_VMALLOC			if KASAN && MODULES
+	select KASAN_VMALLOC			if KASAN && EXECMEM
 	select LOCK_MM_AND_FIND_VMA
 	select MMU_GATHER_PAGE_SIZE
 	select MMU_GATHER_RCU_TABLE_FREE
@@ -686,6 +688,10 @@ config ARCH_SELECTS_CRASH_DUMP
 	depends on CRASH_DUMP
 	select RELOCATABLE if PPC64 || 44x || PPC_85xx
 
+config ARCH_SUPPORTS_CRASH_HOTPLUG
+	def_bool y
+	depends on PPC64
+
 config FA_DUMP
 	bool "Firmware-assisted dump"
 	depends on CRASH_DUMP && PPC64 && (PPC_RTAS || PPC_POWERNV)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 65261cbe5b..a8479c881c 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -114,7 +114,6 @@ LDFLAGS_vmlinux	:= $(LDFLAGS_vmlinux-y)
 
 ifdef CONFIG_PPC64
 ifndef CONFIG_PPC_KERNEL_PCREL
-ifeq ($(call cc-option-yn,-mcmodel=medium),y)
 	# -mcmodel=medium breaks modules because it uses 32bit offsets from
 	# the TOC pointer to create pointers where possible. Pointers into the
 	# percpu data area are created by this method.
@@ -124,9 +123,6 @@ ifeq ($(call cc-option-yn,-mcmodel=medium),y)
 	# kernel percpu data space (starting with 0xc...). We need a full
 	# 64bit relocation for this to work, hence -mcmodel=large.
 	KBUILD_CFLAGS_MODULE += -mcmodel=large
-else
-	export NO_MINIMAL_TOC := -mno-minimal-toc
-endif
 endif
 endif
 
@@ -139,7 +135,7 @@ CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mabi=elfv1)
 CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcall-aixdesc)
 endif
 endif
-CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
+CFLAGS-$(CONFIG_PPC64)	+= -mcmodel=medium
 CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mno-pointers-to-nested-functions)
 CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mlong-double-128)
 
@@ -153,6 +149,9 @@ CFLAGS-$(CONFIG_PPC32)	+= $(call cc-option, $(MULTIPLEWORD))
 
 CFLAGS-$(CONFIG_PPC32)	+= $(call cc-option,-mno-readonly-in-sdata)
 
+CC_FLAGS_FPU		:= $(call cc-option,-mhard-float)
+CC_FLAGS_NO_FPU		:= $(call cc-option,-msoft-float)
+
 ifdef CONFIG_FUNCTION_TRACER
 ifdef CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY
 KBUILD_CPPFLAGS	+= -DCC_USING_PATCHABLE_FUNCTION_ENTRY
@@ -174,7 +173,7 @@ asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
 
 KBUILD_CPPFLAGS	+= -I $(srctree)/arch/powerpc $(asinstr)
 KBUILD_AFLAGS	+= $(AFLAGS-y)
-KBUILD_CFLAGS	+= $(call cc-option,-msoft-float)
+KBUILD_CFLAGS	+= $(CC_FLAGS_NO_FPU)
 KBUILD_CFLAGS	+= $(CFLAGS-y)
 CPP		= $(CC) -E $(KBUILD_CFLAGS)
 
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 968aee2025..35f6b15e4c 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -108,8 +108,8 @@ DTC_FLAGS	?= -p 1024
 # these files into the build dir, fix up any includes and ensure that dependent
 # files are copied in the right order.
 
-# these need to be seperate variables because they are copied out of different
-# directories in the kernel tree. Sure you COULd merge them, but it's a
+# these need to be separate variables because they are copied out of different
+# directories in the kernel tree. Sure you COULD merge them, but it's a
 # cure-is-worse-than-disease situation.
 zlib-decomp-$(CONFIG_KERNEL_GZIP) := decompress_inflate.c
 zlib-$(CONFIG_KERNEL_GZIP) := inffast.c inflate.c inftrees.c
@@ -218,7 +218,7 @@ $(addprefix $(obj)/,$(libfdt) $(libfdtheader)): $(obj)/%: $(srctree)/scripts/dtc
 $(obj)/empty.c:
 	$(Q)touch $@
 
-$(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(srctree)/$(src)/%.S
+$(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(src)/%.S
 	$(Q)cp $< $@
 
 clean-files := $(zlib-) $(zlibheader-) $(zliblinuxheader-) \
@@ -252,9 +252,9 @@ targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) zImage.lds
 extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 
-dtstree		:= $(srctree)/$(src)/dts
+dtstree		:= $(src)/dts
 
-wrapper		:=$(srctree)/$(src)/wrapper
+wrapper		:= $(src)/wrapper
 wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 			$(wrapper) FORCE
 
diff --git a/arch/powerpc/boot/decompress.c b/arch/powerpc/boot/decompress.c
index 977eb15a6d..6835cb53f0 100644
--- a/arch/powerpc/boot/decompress.c
+++ b/arch/powerpc/boot/decompress.c
@@ -101,7 +101,7 @@ static void print_err(char *s)
  * @input_size:  length of the input buffer
  * @outbuf:      output buffer
  * @output_size: length of the output buffer
- * @skip         number of output bytes to ignore
+ * @_skip:       number of output bytes to ignore
  *
  * This function takes compressed data from inbuf, decompresses and write it to
  * outbuf. Once output_size bytes are written to the output buffer, or the
diff --git a/arch/powerpc/boot/dts/Makefile b/arch/powerpc/boot/dts/Makefile
index fb335d05aa..0cd0d8558b 100644
--- a/arch/powerpc/boot/dts/Makefile
+++ b/arch/powerpc/boot/dts/Makefile
@@ -2,5 +2,4 @@
 
 subdir-y += fsl
 
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))
diff --git a/arch/powerpc/boot/dts/acadia.dts b/arch/powerpc/boot/dts/acadia.dts
index deb52e41ab..5fedda8113 100644
--- a/arch/powerpc/boot/dts/acadia.dts
+++ b/arch/powerpc/boot/dts/acadia.dts
@@ -172,7 +172,7 @@
 				reg = <0xef602800 0x60>;
 				interrupt-parent = <&UIC0>;
 				interrupts = <0x4 0x4>;
-				/* This thing is a bit weird.  It has it's own UIC
+				/* This thing is a bit weird.  It has its own UIC
 				 * that it uses to generate snapshot triggers.  We
 				 * don't really support this device yet, and it needs
 				 * work to figure this out.
diff --git a/arch/powerpc/boot/dts/fsl/Makefile b/arch/powerpc/boot/dts/fsl/Makefile
index 3bae982641..d3ecdf14bc 100644
--- a/arch/powerpc/boot/dts/fsl/Makefile
+++ b/arch/powerpc/boot/dts/fsl/Makefile
@@ -1,4 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(src)/%.dts,%.dtb, $(wildcard $(src)/*.dts))
diff --git a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
index 4f044b41a7..fb3200b006 100644
--- a/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4si-post.dtsi
@@ -50,7 +50,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <25 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/bsc9131rdb.dts b/arch/powerpc/boot/dts/fsl/bsc9131rdb.dts
index 8da984251a..0ba86a6dce 100644
--- a/arch/powerpc/boot/dts/fsl/bsc9131rdb.dts
+++ b/arch/powerpc/boot/dts/fsl/bsc9131rdb.dts
@@ -15,7 +15,7 @@
 		device_type = "memory";
 	};
 
-	board_ifc: ifc: ifc@ff71e000 {
+	board_ifc: ifc: memory-controller@ff71e000 {
 		/* NAND Flash on board */
 		ranges = <0x0 0x0 0x0 0xff800000 0x00004000>;
 		reg = <0x0 0xff71e000 0x0 0x2000>;
diff --git a/arch/powerpc/boot/dts/fsl/bsc9131si-post.dtsi b/arch/powerpc/boot/dts/fsl/bsc9131si-post.dtsi
index 2a677fd323..5c53cee875 100644
--- a/arch/powerpc/boot/dts/fsl/bsc9131si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/bsc9131si-post.dtsi
@@ -35,7 +35,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <16 2 0 0 20 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/bsc9132qds.dts b/arch/powerpc/boot/dts/fsl/bsc9132qds.dts
index 7cb2158dfe..ce642e879a 100644
--- a/arch/powerpc/boot/dts/fsl/bsc9132qds.dts
+++ b/arch/powerpc/boot/dts/fsl/bsc9132qds.dts
@@ -15,7 +15,7 @@
 		device_type = "memory";
 	};
 
-	ifc: ifc@ff71e000 {
+	ifc: memory-controller@ff71e000 {
 		/* NOR, NAND Flash on board */
 		ranges = <0x0 0x0 0x0 0x88000000 0x08000000
 			  0x1 0x0 0x0 0xff800000 0x00010000>;
diff --git a/arch/powerpc/boot/dts/fsl/bsc9132si-post.dtsi b/arch/powerpc/boot/dts/fsl/bsc9132si-post.dtsi
index b8e0edd1ac..4da451e000 100644
--- a/arch/powerpc/boot/dts/fsl/bsc9132si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/bsc9132si-post.dtsi
@@ -35,7 +35,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	/* FIXME: Test whether interrupts are split */
 	interrupts = <16 2 0 0 20 2 0 0>;
 };
diff --git a/arch/powerpc/boot/dts/fsl/c293pcie.dts b/arch/powerpc/boot/dts/fsl/c293pcie.dts
index 5e905e0857..e2fdac2ed4 100644
--- a/arch/powerpc/boot/dts/fsl/c293pcie.dts
+++ b/arch/powerpc/boot/dts/fsl/c293pcie.dts
@@ -42,7 +42,7 @@
 		device_type = "memory";
 	};
 
-	ifc: ifc@fffe1e000 {
+	ifc: memory-controller@fffe1e000 {
 		reg = <0xf 0xffe1e000 0 0x2000>;
 		ranges = <0x0 0x0 0xf 0xec000000 0x04000000
 			  0x1 0x0 0xf 0xff800000 0x00010000
diff --git a/arch/powerpc/boot/dts/fsl/c293si-post.dtsi b/arch/powerpc/boot/dts/fsl/c293si-post.dtsi
index f208fb8f64..2d443d5192 100644
--- a/arch/powerpc/boot/dts/fsl/c293si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/c293si-post.dtsi
@@ -35,7 +35,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <19 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/mpc8536si-post.dtsi b/arch/powerpc/boot/dts/fsl/mpc8536si-post.dtsi
index 41935709eb..fba40a1bcc 100644
--- a/arch/powerpc/boot/dts/fsl/mpc8536si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/mpc8536si-post.dtsi
@@ -199,6 +199,10 @@
 
 /include/ "pq3-dma-0.dtsi"
 /include/ "pq3-etsec1-0.dtsi"
+	enet0: ethernet@24000 {
+		fsl,wake-on-filer;
+		fsl,pmc-handle = <&etsec1_clk>;
+	};
 /include/ "pq3-etsec1-timer-0.dtsi"
 
 	usb@22000 {
@@ -222,9 +226,10 @@
 	};
 
 /include/ "pq3-etsec1-2.dtsi"
-
-	ethernet@26000 {
+	enet2: ethernet@26000 {
 		cell-index = <1>;
+		fsl,wake-on-filer;
+		fsl,pmc-handle = <&etsec3_clk>;
 	};
 
 	usb@2b000 {
@@ -249,4 +254,9 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
+	power@e0070 {
+		compatible = "fsl,mpc8536-pmc", "fsl,mpc8548-pmc";
+	};
 };
diff --git a/arch/powerpc/boot/dts/fsl/mpc8544si-post.dtsi b/arch/powerpc/boot/dts/fsl/mpc8544si-post.dtsi
index b68eb119fa..ea7416af7e 100644
--- a/arch/powerpc/boot/dts/fsl/mpc8544si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/mpc8544si-post.dtsi
@@ -188,4 +188,6 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
diff --git a/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi b/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi
index 579d76cb8e..dddb737450 100644
--- a/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi
@@ -156,4 +156,6 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
diff --git a/arch/powerpc/boot/dts/fsl/mpc8572si-post.dtsi b/arch/powerpc/boot/dts/fsl/mpc8572si-post.dtsi
index 49294cf36b..40a6cff770 100644
--- a/arch/powerpc/boot/dts/fsl/mpc8572si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/mpc8572si-post.dtsi
@@ -193,4 +193,6 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
diff --git a/arch/powerpc/boot/dts/fsl/p1010rdb-pb.dts b/arch/powerpc/boot/dts/fsl/p1010rdb-pb.dts
index 3a94acbb3c..ce3346d778 100644
--- a/arch/powerpc/boot/dts/fsl/p1010rdb-pb.dts
+++ b/arch/powerpc/boot/dts/fsl/p1010rdb-pb.dts
@@ -29,3 +29,19 @@
 };
 
 /include/ "p1010si-post.dtsi"
+
+&pci0 {
+	pcie@0 {
+		interrupt-map = <
+			/* IDSEL 0x0 */
+			/*
+			 *irq[4:5] are active-high
+			 *irq[6:7] are active-low
+			 */
+			0000 0x0 0x0 0x1 &mpic 0x4 0x2 0x0 0x0
+			0000 0x0 0x0 0x2 &mpic 0x5 0x2 0x0 0x0
+			0000 0x0 0x0 0x3 &mpic 0x6 0x1 0x0 0x0
+			0000 0x0 0x0 0x4 &mpic 0x7 0x1 0x0 0x0
+			>;
+	};
+};
diff --git a/arch/powerpc/boot/dts/fsl/p1010rdb-pb_36b.dts b/arch/powerpc/boot/dts/fsl/p1010rdb-pb_36b.dts
index 4cf255fedc..83590354f9 100644
--- a/arch/powerpc/boot/dts/fsl/p1010rdb-pb_36b.dts
+++ b/arch/powerpc/boot/dts/fsl/p1010rdb-pb_36b.dts
@@ -56,3 +56,19 @@
 };
 
 /include/ "p1010si-post.dtsi"
+
+&pci0 {
+	pcie@0 {
+		interrupt-map = <
+			/* IDSEL 0x0 */
+			/*
+			 *irq[4:5] are active-high
+			 *irq[6:7] are active-low
+			 */
+			0000 0x0 0x0 0x1 &mpic 0x4 0x2 0x0 0x0
+			0000 0x0 0x0 0x2 &mpic 0x5 0x2 0x0 0x0
+			0000 0x0 0x0 0x3 &mpic 0x6 0x1 0x0 0x0
+			0000 0x0 0x0 0x4 &mpic 0x7 0x1 0x0 0x0
+			>;
+	};
+};
diff --git a/arch/powerpc/boot/dts/fsl/p1010rdb.dtsi b/arch/powerpc/boot/dts/fsl/p1010rdb.dtsi
index 2ca9cee2dd..ef49a7d6c6 100644
--- a/arch/powerpc/boot/dts/fsl/p1010rdb.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1010rdb.dtsi
@@ -215,19 +215,3 @@
 		phy-connection-type = "sgmii";
 	};
 };
-
-&pci0 {
-	pcie@0 {
-		interrupt-map = <
-			/* IDSEL 0x0 */
-			/*
-			 *irq[4:5] are active-high
-			 *irq[6:7] are active-low
-			 */
-			0000 0x0 0x0 0x1 &mpic 0x4 0x2 0x0 0x0
-			0000 0x0 0x0 0x2 &mpic 0x5 0x2 0x0 0x0
-			0000 0x0 0x0 0x3 &mpic 0x6 0x1 0x0 0x0
-			0000 0x0 0x0 0x4 &mpic 0x7 0x1 0x0 0x0
-			>;
-	};
-};
diff --git a/arch/powerpc/boot/dts/fsl/p1010rdb_32b.dtsi b/arch/powerpc/boot/dts/fsl/p1010rdb_32b.dtsi
index fdc19aab2f..583a6cd050 100644
--- a/arch/powerpc/boot/dts/fsl/p1010rdb_32b.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1010rdb_32b.dtsi
@@ -36,7 +36,7 @@ memory {
 	device_type = "memory";
 };
 
-board_ifc: ifc: ifc@ffe1e000 {
+board_ifc: ifc: memory-controller@ffe1e000 {
 	/* NOR, NAND Flashes and CPLD on board */
 	ranges = <0x0 0x0 0x0 0xee000000 0x02000000
 		  0x1 0x0 0x0 0xff800000 0x00010000
diff --git a/arch/powerpc/boot/dts/fsl/p1010rdb_36b.dtsi b/arch/powerpc/boot/dts/fsl/p1010rdb_36b.dtsi
index de2fceed4f..4d41efe003 100644
--- a/arch/powerpc/boot/dts/fsl/p1010rdb_36b.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1010rdb_36b.dtsi
@@ -36,7 +36,7 @@ memory {
 	device_type = "memory";
 };
 
-board_ifc: ifc: ifc@fffe1e000 {
+board_ifc: ifc: memory-controller@fffe1e000 {
 	/* NOR, NAND Flashes and CPLD on board */
 	ranges = <0x0 0x0 0xf 0xee000000 0x02000000
 		  0x1 0x0 0xf 0xff800000 0x00010000
diff --git a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
index ccda0a91ab..2d2550729d 100644
--- a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
@@ -35,7 +35,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <16 2 0 0 19 2 0 0>;
 };
 
@@ -183,9 +183,23 @@
 /include/ "pq3-etsec2-1.dtsi"
 /include/ "pq3-etsec2-2.dtsi"
 
+	enet0: ethernet@b0000 {
+		fsl,pmc-handle = <&etsec1_clk>;
+	};
+
+	enet1: ethernet@b1000 {
+		fsl,pmc-handle = <&etsec2_clk>;
+	};
+
+	enet2: ethernet@b2000 {
+		fsl,pmc-handle = <&etsec3_clk>;
+	};
+
 	global-utilities@e0000 {
 		compatible = "fsl,p1010-guts";
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
diff --git a/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi
index 642dc3a83d..cc4c746100 100644
--- a/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi
@@ -163,14 +163,17 @@
 
 /include/ "pq3-etsec2-0.dtsi"
 	enet0: enet0_grp2: ethernet@b0000 {
+		fsl,pmc-handle = <&etsec1_clk>;
 	};
 
 /include/ "pq3-etsec2-1.dtsi"
 	enet1: enet1_grp2: ethernet@b1000 {
+		fsl,pmc-handle = <&etsec2_clk>;
 	};
 
 /include/ "pq3-etsec2-2.dtsi"
 	enet2: enet2_grp2: ethernet@b2000 {
+		fsl,pmc-handle = <&etsec3_clk>;
 	};
 
 	global-utilities@e0000 {
@@ -178,6 +181,8 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
 
 /include/ "pq3-etsec2-grp2-0.dtsi"
diff --git a/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi
index 407cb5fd0f..378195db9f 100644
--- a/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi
@@ -159,14 +159,17 @@
 
 /include/ "pq3-etsec2-0.dtsi"
 	enet0: enet0_grp2: ethernet@b0000 {
+		fsl,pmc-handle = <&etsec1_clk>;
 	};
 
 /include/ "pq3-etsec2-1.dtsi"
 	enet1: enet1_grp2: ethernet@b1000 {
+		fsl,pmc-handle = <&etsec2_clk>;
 	};
 
 /include/ "pq3-etsec2-2.dtsi"
 	enet2: enet2_grp2: ethernet@b2000 {
+		fsl,pmc-handle = <&etsec3_clk>;
 	};
 
 	global-utilities@e0000 {
@@ -174,6 +177,8 @@
 		reg = <0xe0000 0x1000>;
 		fsl,has-rstcr;
 	};
+
+/include/ "pq3-power.dtsi"
 };
 
 &qe {
diff --git a/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi
index 093e4e3ed3..6ac21e8134 100644
--- a/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi
@@ -225,11 +225,13 @@
 /include/ "pq3-etsec2-0.dtsi"
 	enet0: enet0_grp2: ethernet@b0000 {
 		fsl,wake-on-filer;
+		fsl,pmc-handle = <&etsec1_clk>;
 	};
 
 /include/ "pq3-etsec2-1.dtsi"
 	enet1: enet1_grp2: ethernet@b1000 {
 		fsl,wake-on-filer;
+		fsl,pmc-handle = <&etsec2_clk>;
 	};
 
 	global-utilities@e0000 {
@@ -238,9 +240,10 @@
 		fsl,has-rstcr;
 	};
 
+/include/ "pq3-power.dtsi"
 	power@e0070 {
-		compatible = "fsl,mpc8536-pmc", "fsl,mpc8548-pmc";
-		reg = <0xe0070 0x20>;
+		compatible = "fsl,p1022-pmc", "fsl,mpc8536-pmc",
+				"fsl,mpc8548-pmc";
 	};
 
 };
diff --git a/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi
index 81b9ab2119..d410082d21 100644
--- a/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi
@@ -178,6 +178,10 @@
 		compatible = "fsl-usb2-dr-v1.6", "fsl-usb2-dr";
 	};
 /include/ "pq3-etsec1-0.dtsi"
+	enet0: ethernet@24000 {
+		fsl,pmc-handle = <&etsec1_clk>;
+
+	};
 /include/ "pq3-etsec1-timer-0.dtsi"
 
 	ptp_clock@24e00 {
@@ -186,7 +190,15 @@
 
 
 /include/ "pq3-etsec1-1.dtsi"
+	enet1: ethernet@25000 {
+		fsl,pmc-handle = <&etsec2_clk>;
+	};
+
 /include/ "pq3-etsec1-2.dtsi"
+	enet2: ethernet@26000 {
+		fsl,pmc-handle = <&etsec3_clk>;
+	};
+
 /include/ "pq3-esdhc-0.dtsi"
 	sdhc@2e000 {
 		compatible = "fsl,p2020-esdhc", "fsl,esdhc";
@@ -202,8 +214,5 @@
 		fsl,has-rstcr;
 	};
 
-	pmc: power@e0070 {
-		compatible = "fsl,mpc8548-pmc";
-		reg = <0xe0070 0x20>;
-	};
+/include/ "pq3-power.dtsi"
 };
diff --git a/arch/powerpc/boot/dts/fsl/pq3-power.dtsi b/arch/powerpc/boot/dts/fsl/pq3-power.dtsi
new file mode 100644
index 0000000000..6af1240100
--- /dev/null
+++ b/arch/powerpc/boot/dts/fsl/pq3-power.dtsi
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0+)
+/*
+ * Copyright 2024 NXP
+ */
+
+power@e0070 {
+	compatible = "fsl,mpc8548-pmc";
+	reg = <0xe0070 0x20>;
+
+	etsec1_clk: soc-clk@24 {
+		fsl,pmcdr-mask = <0x00000080>;
+	};
+	etsec2_clk: soc-clk@25 {
+		fsl,pmcdr-mask = <0x00000040>;
+	};
+	etsec3_clk: soc-clk@26 {
+		fsl,pmcdr-mask = <0x00000020>;
+	};
+};
diff --git a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi
index aa5152ca81..8ef0c02020 100644
--- a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi
@@ -52,7 +52,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <25 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/t1024rdb.dts b/arch/powerpc/boot/dts/fsl/t1024rdb.dts
index 270aaf631f..7d003e07a9 100644
--- a/arch/powerpc/boot/dts/fsl/t1024rdb.dts
+++ b/arch/powerpc/boot/dts/fsl/t1024rdb.dts
@@ -91,7 +91,7 @@
 		board-control@2,0 {
 			#address-cells = <1>;
 			#size-cells = <1>;
-			compatible = "fsl,t1024-cpld";
+			compatible = "fsl,t1024-cpld", "fsl,deepsleep-cpld";
 			reg = <3 0 0x300>;
 			ranges = <0 3 0 0x300>;
 			bank-width = <1>;
diff --git a/arch/powerpc/boot/dts/fsl/t1040rdb.dts b/arch/powerpc/boot/dts/fsl/t1040rdb.dts
index dd3aab81e9..4347924e9a 100644
--- a/arch/powerpc/boot/dts/fsl/t1040rdb.dts
+++ b/arch/powerpc/boot/dts/fsl/t1040rdb.dts
@@ -104,7 +104,7 @@
 
 	ifc: localbus@ffe124000 {
 		cpld@3,0 {
-			compatible = "fsl,t1040rdb-cpld";
+			compatible = "fsl,t104xrdb-cpld", "fsl,deepsleep-cpld";
 		};
 	};
 };
diff --git a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
index 7767886232..c9542b73bd 100644
--- a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi
@@ -52,7 +52,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <25 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/t1042rdb.dts b/arch/powerpc/boot/dts/fsl/t1042rdb.dts
index 3ebb712224..099764322b 100644
--- a/arch/powerpc/boot/dts/fsl/t1042rdb.dts
+++ b/arch/powerpc/boot/dts/fsl/t1042rdb.dts
@@ -68,7 +68,7 @@
 
 	ifc: localbus@ffe124000 {
 		cpld@3,0 {
-			compatible = "fsl,t1042rdb-cpld";
+			compatible = "fsl,t104xrdb-cpld", "fsl,deepsleep-cpld";
 		};
 	};
 };
diff --git a/arch/powerpc/boot/dts/fsl/t1042rdb_pi.dts b/arch/powerpc/boot/dts/fsl/t1042rdb_pi.dts
index 8ec3ff45e6..b10cab1a34 100644
--- a/arch/powerpc/boot/dts/fsl/t1042rdb_pi.dts
+++ b/arch/powerpc/boot/dts/fsl/t1042rdb_pi.dts
@@ -41,7 +41,7 @@
 
 	ifc: localbus@ffe124000 {
 		cpld@3,0 {
-			compatible = "fsl,t1042rdb_pi-cpld";
+			compatible = "fsl,t104xrdb-cpld", "fsl,deepsleep-cpld";
 		};
 	};
 
diff --git a/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi b/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi
index 27714dc2f0..6bb95878d3 100644
--- a/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi
@@ -50,7 +50,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <25 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
index fcac73486d..65f3e17c0d 100644
--- a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
@@ -50,7 +50,7 @@
 &ifc {
 	#address-cells = <2>;
 	#size-cells = <1>;
-	compatible = "fsl,ifc", "simple-bus";
+	compatible = "fsl,ifc";
 	interrupts = <25 2 0 0>;
 };
 
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index cae31a6e8f..2c0e2a1cab 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -188,7 +188,7 @@ static inline void prep_esm_blob(struct addr_range vmlinux, void *chosen) { }
 
 /* A buffer that may be edited by tools operating on a zImage binary so as to
  * edit the command line passed to vmlinux (by setting /chosen/bootargs).
- * The buffer is put in it's own section so that tools may locate it easier.
+ * The buffer is put in its own section so that tools may locate it easier.
  */
 static char cmdline[BOOT_COMMAND_LINE_SIZE]
 	__attribute__((__section__("__builtin_cmdline")));
diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c
index f157717ae8..89ff46b8b2 100644
--- a/arch/powerpc/boot/ps3.c
+++ b/arch/powerpc/boot/ps3.c
@@ -25,7 +25,7 @@ BSS_STACK(4096);
 
 /* A buffer that may be edited by tools operating on a zImage binary so as to
  * edit the command line passed to vmlinux (by setting /chosen/bootargs).
- * The buffer is put in it's own section so that tools may locate it easier.
+ * The buffer is put in its own section so that tools may locate it easier.
  */
 
 static char cmdline[BOOT_COMMAND_LINE_SIZE]
diff --git a/arch/powerpc/configs/85xx-hw.config b/arch/powerpc/configs/85xx-hw.config
index 524db76f47..8aff832173 100644
--- a/arch/powerpc/configs/85xx-hw.config
+++ b/arch/powerpc/configs/85xx-hw.config
@@ -24,6 +24,7 @@ CONFIG_FS_ENET=y
 CONFIG_FSL_CORENET_CF=y
 CONFIG_FSL_DMA=y
 CONFIG_FSL_HV_MANAGER=y
+CONFIG_FSL_IFC=y
 CONFIG_FSL_PQ_MDIO=y
 CONFIG_FSL_RIO=y
 CONFIG_FSL_XGMAC_MDIO=y
@@ -58,6 +59,7 @@ CONFIG_INPUT_FF_MEMLESS=m
 CONFIG_MARVELL_PHY=y
 CONFIG_MDIO_BUS_MUX_GPIO=y
 CONFIG_MDIO_BUS_MUX_MMIOREG=y
+CONFIG_MEMORY=y
 CONFIG_MMC_SDHCI_OF_ESDHC=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI=y
diff --git a/arch/powerpc/configs/adder875_defconfig b/arch/powerpc/configs/adder875_defconfig
index 7f35d5bc12..97f4d48517 100644
--- a/arch/powerpc/configs/adder875_defconfig
+++ b/arch/powerpc/configs/adder875_defconfig
@@ -4,7 +4,7 @@ CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/powerpc/configs/ep88xc_defconfig b/arch/powerpc/configs/ep88xc_defconfig
index a98ef6a4ab..50cc59eb36 100644
--- a/arch/powerpc/configs/ep88xc_defconfig
+++ b/arch/powerpc/configs/ep88xc_defconfig
@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/powerpc/configs/mpc866_ads_defconfig b/arch/powerpc/configs/mpc866_ads_defconfig
index 5c56d36cdf..6f449411ab 100644
--- a/arch/powerpc/configs/mpc866_ads_defconfig
+++ b/arch/powerpc/configs/mpc866_ads_defconfig
@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_BUG is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_EPOLL is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/powerpc/configs/mpc885_ads_defconfig b/arch/powerpc/configs/mpc885_ads_defconfig
index 56b876e418..77306be62e 100644
--- a/arch/powerpc/configs/mpc885_ads_defconfig
+++ b/arch/powerpc/configs/mpc885_ads_defconfig
@@ -7,7 +7,7 @@ CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 CONFIG_PERF_EVENTS=y
 # CONFIG_VM_EVENT_COUNTERS is not set
diff --git a/arch/powerpc/configs/tqm8xx_defconfig b/arch/powerpc/configs/tqm8xx_defconfig
index 083c2e5752..383c0966e9 100644
--- a/arch/powerpc/configs/tqm8xx_defconfig
+++ b/arch/powerpc/configs/tqm8xx_defconfig
@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 CONFIG_MODULES=y
diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
index 61a8d5555c..e5fdc336c9 100644
--- a/arch/powerpc/include/asm/Kbuild
+++ b/arch/powerpc/include/asm/Kbuild
@@ -6,5 +6,4 @@ generic-y += agp.h
 generic-y += kvm_types.h
 generic-y += mcs_spinlock.h
 generic-y += qrwlock.h
-generic-y += vtime.h
 generic-y += early_ioremap.h
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable-4k.h b/arch/powerpc/include/asm/book3s/64/pgtable-4k.h
index 48f21820af..baf934578c 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable-4k.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable-4k.h
@@ -6,26 +6,6 @@
  */
 #ifndef __ASSEMBLY__
 #ifdef CONFIG_HUGETLB_PAGE
-static inline int pmd_huge(pmd_t pmd)
-{
-	/*
-	 * leaf pte for huge page
-	 */
-	if (radix_enabled())
-		return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
-	return 0;
-}
-
-static inline int pud_huge(pud_t pud)
-{
-	/*
-	 * leaf pte for huge page
-	 */
-	if (radix_enabled())
-		return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
-	return 0;
-}
-
 /*
  * With radix , we have hugepage ptes in the pud and pmd entries. We don't
  * need to setup hugepage directory for them. Our pte and page directory format
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable-64k.h b/arch/powerpc/include/asm/book3s/64/pgtable-64k.h
index ced7ee8b42..6ac73da7b8 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable-64k.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable-64k.h
@@ -4,31 +4,6 @@
 
 #ifndef __ASSEMBLY__
 #ifdef CONFIG_HUGETLB_PAGE
-/*
- * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have
- * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD;
- *
- * Defined in such a way that we can optimize away code block at build time
- * if CONFIG_HUGETLB_PAGE=n.
- *
- * returns true for pmd migration entries, THP, devmap, hugetlb
- * But compile time dependent on CONFIG_HUGETLB_PAGE
- */
-static inline int pmd_huge(pmd_t pmd)
-{
-	/*
-	 * leaf pte for huge page
-	 */
-	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
-}
-
-static inline int pud_huge(pud_t pud)
-{
-	/*
-	 * leaf pte for huge page
-	 */
-	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
-}
 
 /*
  * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index fac5615e6b..8f9432e385 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -262,6 +262,18 @@ extern unsigned long __kernel_io_end;
 
 extern struct page *vmemmap;
 extern unsigned long pci_io_base;
+
+#define pmd_leaf pmd_leaf
+static inline bool pmd_leaf(pmd_t pmd)
+{
+	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
+}
+
+#define pud_leaf pud_leaf
+static inline bool pud_leaf(pud_t pud)
+{
+	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
+}
 #endif /* __ASSEMBLY__ */
 
 #include <asm/book3s/64/hash.h>
@@ -1426,20 +1438,5 @@ static inline bool is_pte_rw_upgrade(unsigned long old_val, unsigned long new_va
 	return false;
 }
 
-/*
- * Like pmd_huge(), but works regardless of config options
- */
-#define pmd_leaf pmd_leaf
-static inline bool pmd_leaf(pmd_t pmd)
-{
-	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
-}
-
-#define pud_leaf pud_leaf
-static inline bool pud_leaf(pud_t pud)
-{
-	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
-}
-
 #endif /* __ASSEMBLY__ */
 #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */
diff --git a/arch/powerpc/include/asm/cpu_has_feature.h b/arch/powerpc/include/asm/cpu_has_feature.h
index 727d4b3219..0efabccd82 100644
--- a/arch/powerpc/include/asm/cpu_has_feature.h
+++ b/arch/powerpc/include/asm/cpu_has_feature.h
@@ -29,7 +29,7 @@ static __always_inline bool cpu_has_feature(unsigned long feature)
 #endif
 
 #ifdef CONFIG_JUMP_LABEL_FEATURE_CHECK_DEBUG
-	if (!static_key_initialized) {
+	if (!static_key_feature_checks_initialized) {
 		printk("Warning! cpu_has_feature() used prior to jump label init!\n");
 		dump_stack();
 		return early_cpu_has_feature(feature);
diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h
index 4961fb38e4..aff858ca99 100644
--- a/arch/powerpc/include/asm/cputime.h
+++ b/arch/powerpc/include/asm/cputime.h
@@ -32,23 +32,10 @@
 #ifdef CONFIG_PPC64
 #define get_accounting(tsk)	(&get_paca()->accounting)
 #define raw_get_accounting(tsk)	(&local_paca->accounting)
-static inline void arch_vtime_task_switch(struct task_struct *tsk) { }
 
 #else
 #define get_accounting(tsk)	(&task_thread_info(tsk)->accounting)
 #define raw_get_accounting(tsk)	get_accounting(tsk)
-/*
- * Called from the context switch with interrupts disabled, to charge all
- * accumulated times to the current process, and to prepare accounting on
- * the next process.
- */
-static inline void arch_vtime_task_switch(struct task_struct *prev)
-{
-	struct cpu_accounting_data *acct = get_accounting(current);
-	struct cpu_accounting_data *acct0 = get_accounting(prev);
-
-	acct->starttime = acct0->starttime;
-}
 #endif
 
 /*
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 514dd056c2..91a9fd5325 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -82,7 +82,7 @@ struct eeh_pe {
 	int false_positives;		/* Times of reported #ff's	*/
 	atomic_t pass_dev_cnt;		/* Count of passed through devs	*/
 	struct eeh_pe *parent;		/* Parent PE			*/
-	void *data;			/* PE auxillary data		*/
+	void *data;			/* PE auxiliary data		*/
 	struct list_head child_list;	/* List of PEs below this PE	*/
 	struct list_head child;		/* Memb. child_list/eeh_phb_pe	*/
 	struct list_head edevs;		/* List of eeh_dev in this PE	*/
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index 79f1c480b5..bb4b94444d 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -127,8 +127,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 /* Notes used in ET_CORE. Note name is "SPU/<fd>/<filename>". */
 #define NT_SPU		1
 
-#define ARCH_HAVE_EXTRA_ELF_NOTES
-
 #endif /* CONFIG_SPU_BASE */
 
 #ifdef CONFIG_PPC64
diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h
index 27f9e11eda..e83869a4eb 100644
--- a/arch/powerpc/include/asm/fadump-internal.h
+++ b/arch/powerpc/include/asm/fadump-internal.h
@@ -42,13 +42,38 @@ static inline u64 fadump_str_to_u64(const char *str)
 
 #define FADUMP_CPU_UNKNOWN		(~((u32)0))
 
-#define FADUMP_CRASH_INFO_MAGIC		fadump_str_to_u64("FADMPINF")
+/*
+ * The introduction of new fields in the fadump crash info header has
+ * led to a change in the magic key from `FADMPINF` to `FADMPSIG` for
+ * identifying a kernel crash from an old kernel.
+ *
+ * To prevent the need for further changes to the magic number in the
+ * event of future modifications to the fadump crash info header, a
+ * version field has been introduced to track the fadump crash info
+ * header version.
+ *
+ * Consider a few points before adding new members to the fadump crash info
+ * header structure:
+ *
+ *  - Append new members; avoid adding them in between.
+ *  - Non-primitive members should have a size member as well.
+ *  - For every change in the fadump header, increment the
+ *    fadump header version. This helps the updated kernel decide how to
+ *    handle kernel dumps from older kernels.
+ */
+#define FADUMP_CRASH_INFO_MAGIC_OLD	fadump_str_to_u64("FADMPINF")
+#define FADUMP_CRASH_INFO_MAGIC		fadump_str_to_u64("FADMPSIG")
+#define FADUMP_HEADER_VERSION		1
 
 /* fadump crash info structure */
 struct fadump_crash_info_header {
 	u64		magic_number;
-	u64		elfcorehdr_addr;
+	u32		version;
 	u32		crashing_cpu;
+	u64		vmcoreinfo_raddr;
+	u64		vmcoreinfo_size;
+	u32		pt_regs_sz;
+	u32		cpu_mask_sz;
 	struct pt_regs	regs;
 	struct cpumask	cpu_mask;
 };
@@ -94,9 +119,13 @@ struct fw_dump {
 	u64		boot_mem_regs_cnt;
 
 	unsigned long	fadumphdr_addr;
+	u64		elfcorehdr_addr;
+	u64		elfcorehdr_size;
 	unsigned long	cpu_notes_buf_vaddr;
 	unsigned long	cpu_notes_buf_size;
 
+	unsigned long	param_area;
+
 	/*
 	 * Maximum size supported by firmware to copy from source to
 	 * destination address per entry.
@@ -111,6 +140,7 @@ struct fw_dump {
 	unsigned long	dump_active:1;
 	unsigned long	dump_registered:1;
 	unsigned long	nocma:1;
+	unsigned long	param_area_supported:1;
 
 	struct fadump_ops	*ops;
 };
@@ -129,6 +159,7 @@ struct fadump_ops {
 				      struct seq_file *m);
 	void	(*fadump_trigger)(struct fadump_crash_info_header *fdh,
 				  const char *msg);
+	int	(*fadump_max_boot_mem_rgns)(void);
 };
 
 /* Helper functions */
@@ -136,7 +167,6 @@ s32 __init fadump_setup_cpu_notes_buf(u32 num_cpus);
 void fadump_free_cpu_notes_buf(void);
 u32 *__init fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs);
 void __init fadump_update_elfcore_header(char *bufp);
-bool is_fadump_boot_mem_contiguous(void);
 bool is_fadump_reserved_mem_contiguous(void);
 
 #else /* !CONFIG_PRESERVE_FA_DUMP */
diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h
index 526a6a6473..ef40c9b697 100644
--- a/arch/powerpc/include/asm/fadump.h
+++ b/arch/powerpc/include/asm/fadump.h
@@ -19,12 +19,14 @@ extern int is_fadump_active(void);
 extern int should_fadump_crash(void);
 extern void crash_fadump(struct pt_regs *, const char *);
 extern void fadump_cleanup(void);
+extern void fadump_append_bootargs(void);
 
 #else	/* CONFIG_FA_DUMP */
 static inline int is_fadump_active(void) { return 0; }
 static inline int should_fadump_crash(void) { return 0; }
 static inline void crash_fadump(struct pt_regs *regs, const char *str) { }
 static inline void fadump_cleanup(void) { }
+static inline void fadump_append_bootargs(void) { }
 #endif /* !CONFIG_FA_DUMP */
 
 #if defined(CONFIG_FA_DUMP) || defined(CONFIG_PRESERVE_FA_DUMP)
diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h
index 77824bd289..17d168dd8b 100644
--- a/arch/powerpc/include/asm/feature-fixups.h
+++ b/arch/powerpc/include/asm/feature-fixups.h
@@ -291,6 +291,8 @@ extern long __start___rfi_flush_fixup, __stop___rfi_flush_fixup;
 extern long __start___barrier_nospec_fixup, __stop___barrier_nospec_fixup;
 extern long __start__btb_flush_fixup, __stop__btb_flush_fixup;
 
+extern bool static_key_feature_checks_initialized;
+
 void apply_feature_fixups(void);
 void update_mmu_feature_fixups(unsigned long mask);
 void setup_feature_keys(void);
diff --git a/arch/powerpc/include/asm/fpu.h b/arch/powerpc/include/asm/fpu.h
new file mode 100644
index 0000000000..ca584e4bc4
--- /dev/null
+++ b/arch/powerpc/include/asm/fpu.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2023 SiFive
+ */
+
+#ifndef _ASM_POWERPC_FPU_H
+#define _ASM_POWERPC_FPU_H
+
+#include <linux/preempt.h>
+
+#include <asm/cpu_has_feature.h>
+#include <asm/switch_to.h>
+
+#define kernel_fpu_available()	(!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE))
+
+static inline void kernel_fpu_begin(void)
+{
+	preempt_disable();
+	enable_kernel_fp();
+}
+
+static inline void kernel_fpu_end(void)
+{
+	disable_kernel_fp();
+	preempt_enable();
+}
+
+#endif /* ! _ASM_POWERPC_FPU_H */
diff --git a/arch/powerpc/include/asm/guest-state-buffer.h b/arch/powerpc/include/asm/guest-state-buffer.h
index 808149f315..d107abe146 100644
--- a/arch/powerpc/include/asm/guest-state-buffer.h
+++ b/arch/powerpc/include/asm/guest-state-buffer.h
@@ -81,6 +81,7 @@
 #define KVMPPC_GSID_HASHKEYR			0x1050
 #define KVMPPC_GSID_HASHPKEYR			0x1051
 #define KVMPPC_GSID_CTRL			0x1052
+#define KVMPPC_GSID_DPDES			0x1053
 
 #define KVMPPC_GSID_CR				0x2000
 #define KVMPPC_GSID_PIDR			0x2001
@@ -110,7 +111,7 @@
 #define KVMPPC_GSE_META_COUNT (KVMPPC_GSE_META_END - KVMPPC_GSE_META_START + 1)
 
 #define KVMPPC_GSE_DW_REGS_START KVMPPC_GSID_GPR(0)
-#define KVMPPC_GSE_DW_REGS_END KVMPPC_GSID_CTRL
+#define KVMPPC_GSE_DW_REGS_END KVMPPC_GSID_DPDES
 #define KVMPPC_GSE_DW_REGS_COUNT \
 	(KVMPPC_GSE_DW_REGS_END - KVMPPC_GSE_DW_REGS_START + 1)
 
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 048e3705af..52e1b1d15f 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -982,7 +982,7 @@ static inline phys_addr_t page_to_phys(struct page *page)
 }
 
 /*
- * 32 bits still uses virt_to_bus() for it's implementation of DMA
+ * 32 bits still uses virt_to_bus() for its implementation of DMA
  * mappings se we have to keep it defined here. We also have some old
  * drivers (shame shame shame) that use bus_to_virt() and haven't been
  * fixed yet so I need to define it here.
diff --git a/arch/powerpc/include/asm/kasan.h b/arch/powerpc/include/asm/kasan.h
index 365d272009..b5bbb94c51 100644
--- a/arch/powerpc/include/asm/kasan.h
+++ b/arch/powerpc/include/asm/kasan.h
@@ -19,7 +19,7 @@
 
 #define KASAN_SHADOW_SCALE_SHIFT	3
 
-#if defined(CONFIG_MODULES) && defined(CONFIG_PPC32)
+#if defined(CONFIG_EXECMEM) && defined(CONFIG_PPC32)
 #define KASAN_KERN_START	ALIGN_DOWN(PAGE_OFFSET - SZ_256M, SZ_256M)
 #else
 #define KASAN_KERN_START	PAGE_OFFSET
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index fdb90e24dc..95a98b390d 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -135,6 +135,17 @@ static inline void crash_setup_regs(struct pt_regs *newregs,
 		ppc_save_regs(newregs);
 }
 
+#ifdef CONFIG_CRASH_HOTPLUG
+void arch_crash_handle_hotplug_event(struct kimage *image, void *arg);
+#define arch_crash_handle_hotplug_event arch_crash_handle_hotplug_event
+
+int arch_crash_hotplug_support(struct kimage *image, unsigned long kexec_flags);
+#define arch_crash_hotplug_support arch_crash_hotplug_support
+
+unsigned int arch_crash_get_elfcorehdr_size(void);
+#define crash_get_elfcorehdr_size arch_crash_get_elfcorehdr_size
+#endif /* CONFIG_CRASH_HOTPLUG */
+
 extern int crashing_cpu;
 extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
 extern void crash_ipi_callback(struct pt_regs *regs);
@@ -185,6 +196,10 @@ static inline void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
 
 #endif /* CONFIG_CRASH_DUMP */
 
+#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_DUMP)
+int update_cpus_node(void *fdt);
+#endif
+
 #ifdef CONFIG_PPC_BOOK3S_64
 #include <asm/book3s/64/kexec.h>
 #endif
diff --git a/arch/powerpc/include/asm/kexec_ranges.h b/arch/powerpc/include/asm/kexec_ranges.h
index f83866a19e..14055896cb 100644
--- a/arch/powerpc/include/asm/kexec_ranges.h
+++ b/arch/powerpc/include/asm/kexec_ranges.h
@@ -7,19 +7,9 @@
 void sort_memory_ranges(struct crash_mem *mrngs, bool merge);
 struct crash_mem *realloc_mem_ranges(struct crash_mem **mem_ranges);
 int add_mem_range(struct crash_mem **mem_ranges, u64 base, u64 size);
-int add_tce_mem_ranges(struct crash_mem **mem_ranges);
-int add_initrd_mem_range(struct crash_mem **mem_ranges);
-#ifdef CONFIG_PPC_64S_HASH_MMU
-int add_htab_mem_range(struct crash_mem **mem_ranges);
-#else
-static inline int add_htab_mem_range(struct crash_mem **mem_ranges)
-{
-	return 0;
-}
-#endif
-int add_kernel_mem_range(struct crash_mem **mem_ranges);
-int add_rtas_mem_range(struct crash_mem **mem_ranges);
-int add_opal_mem_range(struct crash_mem **mem_ranges);
-int add_reserved_mem_ranges(struct crash_mem **mem_ranges);
-
+int remove_mem_range(struct crash_mem **mem_ranges, u64 base, u64 size);
+int get_exclude_memory_ranges(struct crash_mem **mem_ranges);
+int get_reserved_memory_ranges(struct crash_mem **mem_ranges);
+int get_crash_memory_ranges(struct crash_mem **mem_ranges);
+int get_usable_memory_ranges(struct crash_mem **mem_ranges);
 #endif /* _ASM_POWERPC_KEXEC_RANGES_H */
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 3e1e2a698c..10618622d7 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -594,6 +594,7 @@ static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)		\
 
 
 KVMPPC_BOOK3S_VCORE_ACCESSOR(vtb, 64, KVMPPC_GSID_VTB)
+KVMPPC_BOOK3S_VCORE_ACCESSOR(dpdes, 64, KVMPPC_GSID_DPDES)
 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(arch_compat, 32, KVMPPC_GSID_LOGICAL_PVR)
 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(lpcr, 64, KVMPPC_GSID_LPCR)
 KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(tb_offset, 64, KVMPPC_GSID_TB_OFFSET)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 3281215097..ca3829d47a 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -287,7 +287,6 @@ struct kvmppc_ops {
 	bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range);
 	bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
 	bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
-	bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
 	void (*free_memslot)(struct kvm_memory_slot *slot);
 	int (*init_vm)(struct kvm *kvm);
 	void (*destroy_vm)(struct kvm *kvm);
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 3b72c7ed24..8a27b046c6 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -251,7 +251,7 @@ static __always_inline bool mmu_has_feature(unsigned long feature)
 #endif
 
 #ifdef CONFIG_JUMP_LABEL_FEATURE_CHECK_DEBUG
-	if (!static_key_initialized) {
+	if (!static_key_feature_checks_initialized) {
 		printk("Warning! mmu_has_feature() used prior to jump label init!\n");
 		dump_stack();
 		return early_mmu_has_feature(feature);
@@ -406,9 +406,5 @@ extern void *abatron_pteptrs[2];
 #include <asm/nohash/mmu.h>
 #endif
 
-#if defined(CONFIG_FA_DUMP) || defined(CONFIG_PRESERVE_FA_DUMP)
-#define __HAVE_ARCH_RESERVED_KERNEL_PAGES
-#endif
-
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_MMU_H_ */
diff --git a/arch/powerpc/include/asm/module.h b/arch/powerpc/include/asm/module.h
index a8e2e8339f..300c777cc3 100644
--- a/arch/powerpc/include/asm/module.h
+++ b/arch/powerpc/include/asm/module.h
@@ -48,11 +48,6 @@ struct mod_arch_specific {
 	unsigned long tramp;
 	unsigned long tramp_regs;
 #endif
-
-	/* List of BUG addresses, source line numbers and filenames */
-	struct list_head bug_list;
-	struct bug_entry *bug_table;
-	unsigned int num_bugs;
 };
 
 /*
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h
index 427db14292..f5f39d4f03 100644
--- a/arch/powerpc/include/asm/nohash/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/pgtable.h
@@ -351,16 +351,6 @@ static inline int hugepd_ok(hugepd_t hpd)
 #endif
 }
 
-static inline int pmd_huge(pmd_t pmd)
-{
-	return 0;
-}
-
-static inline int pud_huge(pud_t pud)
-{
-	return 0;
-}
-
 #define is_hugepd(hpd)		(hugepd_ok(hpd))
 #endif
 
diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index a2bc4b95e7..8c9d4b26bf 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -1027,10 +1027,10 @@ struct opal_i2c_request {
  * The host will pass on OPAL, a buffer of length OPAL_SYSEPOW_MAX
  * with individual elements being 16 bits wide to fetch the system
  * wide EPOW status. Each element in the buffer will contain the
- * EPOW status in it's bit representation for a particular EPOW sub
+ * EPOW status in its bit representation for a particular EPOW sub
  * class as defined here. So multiple detailed EPOW status bits
  * specific for any sub class can be represented in a single buffer
- * element as it's bit representation.
+ * element as its bit representation.
  */
 
 /* System EPOW type */
diff --git a/arch/powerpc/include/asm/pmac_feature.h b/arch/powerpc/include/asm/pmac_feature.h
index 2495866f2e..420e2878ae 100644
--- a/arch/powerpc/include/asm/pmac_feature.h
+++ b/arch/powerpc/include/asm/pmac_feature.h
@@ -192,7 +192,7 @@ static inline long pmac_call_feature(int selector, struct device_node* node,
 
 /* PMAC_FTR_BMAC_ENABLE		(struct device_node* node, 0, int value)
  * enable/disable the bmac (ethernet) cell of a mac-io ASIC, also drive
- * it's reset line
+ * its reset line
  */
 #define PMAC_FTR_BMAC_ENABLE		PMAC_FTR_DEF(6)
 
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index b2c51d337e..e44cac0da3 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -260,7 +260,8 @@ struct thread_struct {
 	unsigned long   sier2;
 	unsigned long   sier3;
 	unsigned long	hashkeyr;
-
+	unsigned long	dexcr;
+	unsigned long	dexcr_onexec;	/* Reset value to load on exec */
 #endif
 };
 
@@ -333,6 +334,16 @@ extern int set_endian(struct task_struct *tsk, unsigned int val);
 extern int get_unalign_ctl(struct task_struct *tsk, unsigned long adr);
 extern int set_unalign_ctl(struct task_struct *tsk, unsigned int val);
 
+#ifdef CONFIG_PPC_BOOK3S_64
+
+#define PPC_GET_DEXCR_ASPECT(tsk, asp) get_dexcr_prctl((tsk), (asp))
+#define PPC_SET_DEXCR_ASPECT(tsk, asp, val) set_dexcr_prctl((tsk), (asp), (val))
+
+int get_dexcr_prctl(struct task_struct *tsk, unsigned long asp);
+int set_dexcr_prctl(struct task_struct *tsk, unsigned long asp, unsigned long val);
+
+#endif
+
 extern void load_fp_state(struct thread_fp_state *fp);
 extern void store_fp_state(struct thread_fp_state *fp);
 extern void load_vr_state(struct thread_vr_state *vr);
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index d3d1aea009..eed33cb916 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -615,7 +615,7 @@
 #define HID1_ABE	(1<<10)		/* 7450 Address Broadcast Enable */
 #define HID1_PS		(1<<16)		/* 750FX PLL selection */
 #endif
-#define SPRN_HID2	0x3F8		/* Hardware Implementation Register 2 */
+#define SPRN_HID2_750FX	0x3F8		/* IBM 750FX HID2 Register */
 #define SPRN_HID2_GEKKO	0x398		/* Gekko HID2 Register */
 #define SPRN_HID2_G2_LE	0x3F3		/* G2_LE HID2 Register */
 #define  HID2_G2_LE_HBE	(1<<18)		/* High BAT Enable (G2_LE) */
diff --git a/arch/powerpc/include/asm/trace.h b/arch/powerpc/include/asm/trace.h
index d9ac3a4f46..a7b69b2529 100644
--- a/arch/powerpc/include/asm/trace.h
+++ b/arch/powerpc/include/asm/trace.h
@@ -137,7 +137,7 @@ TRACE_EVENT(rtas_input,
 
 	TP_fast_assign(
 		__entry->nargs = be32_to_cpu(rtas_args->nargs);
-		__assign_str(name, name);
+		__assign_str(name);
 		be32_to_cpu_array(__get_dynamic_array(inputs), rtas_args->args, __entry->nargs);
 	),
 
@@ -162,7 +162,7 @@ TRACE_EVENT(rtas_output,
 	TP_fast_assign(
 		__entry->nr_other = be32_to_cpu(rtas_args->nret) - 1;
 		__entry->status = be32_to_cpu(rtas_args->rets[0]);
-		__assign_str(name, name);
+		__assign_str(name);
 		be32_to_cpu_array(__get_dynamic_array(other_outputs),
 				  &rtas_args->rets[1], __entry->nr_other);
 	),
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 4cba724c88..fd594bf6c6 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -181,8 +181,19 @@ do {								\
 #endif
 
 #ifdef __powerpc64__
+#ifdef CONFIG_PPC_KERNEL_PREFIXED
 #define __get_user_asm2_goto(x, addr, label)			\
 	__get_user_asm_goto(x, addr, label, "ld")
+#else
+#define __get_user_asm2_goto(x, addr, label)			\
+	asm_goto_output(					\
+		"1:	ld%U1%X1 %0, %1	# get_user\n"		\
+		EX_TABLE(1b, %l2)				\
+		: "=r" (x)					\
+		: DS_FORM_CONSTRAINT (*addr)			\
+		:						\
+		: label)
+#endif // CONFIG_PPC_KERNEL_PREFIXED
 #else /* __powerpc64__ */
 #define __get_user_asm2_goto(x, addr, label)			\
 	asm_goto_output(					\
diff --git a/arch/powerpc/include/asm/uninorth.h b/arch/powerpc/include/asm/uninorth.h
index e278299b9b..6949b5daa3 100644
--- a/arch/powerpc/include/asm/uninorth.h
+++ b/arch/powerpc/include/asm/uninorth.h
@@ -144,7 +144,7 @@
 #define UNI_N_HWINIT_STATE_SLEEPING	0x01
 #define UNI_N_HWINIT_STATE_RUNNING	0x02
 /* This last bit appear to be used by the bootROM to know the second
- * CPU has started and will enter it's sleep loop with IP=0
+ * CPU has started and will enter its sleep loop with IP=0
  */
 #define UNI_N_HWINIT_STATE_CPU1_FLAG	0x10000000
 
diff --git a/arch/powerpc/include/asm/vdso/gettimeofday.h b/arch/powerpc/include/asm/vdso/gettimeofday.h
index 78302f6c25..c6390890a6 100644
--- a/arch/powerpc/include/asm/vdso/gettimeofday.h
+++ b/arch/powerpc/include/asm/vdso/gettimeofday.h
@@ -13,6 +13,17 @@
 
 #define VDSO_HAS_TIME			1
 
+/*
+ * powerpc specific delta calculation.
+ *
+ * This variant removes the masking of the subtraction because the
+ * clocksource mask of all VDSO capable clocksources on powerpc is U64_MAX
+ * which would result in a pointless operation. The compiler cannot
+ * optimize it away as the mask comes from the vdso data and is not compile
+ * time constant.
+ */
+#define VDSO_DELTA_NOMASK		1
+
 static __always_inline int do_syscall_2(const unsigned long _r0, const unsigned long _r3,
 					const unsigned long _r4)
 {
@@ -104,21 +115,6 @@ static inline bool vdso_clocksource_ok(const struct vdso_data *vd)
 }
 #define vdso_clocksource_ok vdso_clocksource_ok
 
-/*
- * powerpc specific delta calculation.
- *
- * This variant removes the masking of the subtraction because the
- * clocksource mask of all VDSO capable clocksources on powerpc is U64_MAX
- * which would result in a pointless operation. The compiler cannot
- * optimize it away as the mask comes from the vdso data and is not compile
- * time constant.
- */
-static __always_inline u64 vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
-{
-	return (cycles - last) * mult;
-}
-#define vdso_calc_delta vdso_calc_delta
-
 #ifndef __powerpc64__
 static __always_inline u64 vdso_shift_ns(u64 ns, unsigned long shift)
 {
diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/video.h
index c0c5d1df7a..e1770114ff 100644
--- a/arch/powerpc/include/asm/fb.h
+++ b/arch/powerpc/include/asm/video.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_FB_H_
-#define _ASM_FB_H_
+#ifndef _ASM_VIDEO_H_
+#define _ASM_VIDEO_H_
 
 #include <asm/page.h>
 
@@ -12,6 +12,6 @@ static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
 }
 #define pgprot_framebuffer pgprot_framebuffer
 
-#include <asm-generic/fb.h>
+#include <asm-generic/video.h>
 
-#endif /* _ASM_FB_H_ */
+#endif /* _ASM_VIDEO_H_ */
diff --git a/arch/powerpc/include/uapi/asm/bootx.h b/arch/powerpc/include/uapi/asm/bootx.h
index 6728c7e24e..1b8c121071 100644
--- a/arch/powerpc/include/uapi/asm/bootx.h
+++ b/arch/powerpc/include/uapi/asm/bootx.h
@@ -108,7 +108,7 @@ typedef struct boot_infos
     /* ALL BELOW NEW (vers. 4) */
 
     /* This defines the physical memory. Valid with BOOT_ARCH_NUBUS flag
-       (non-PCI) only. On PCI, memory is contiguous and it's size is in the
+       (non-PCI) only. On PCI, memory is contiguous and its size is in the
        device-tree. */
     boot_info_map_entry_t
     	        physMemoryMap[MAX_MEM_MAP_SIZE]; /* Where the phys memory is */
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index d3282fbea4..8585d03c02 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -3,9 +3,6 @@
 # Makefile for the linux kernel.
 #
 
-ifdef CONFIG_PPC64
-CFLAGS_prom_init.o	+= $(NO_MINIMAL_TOC)
-endif
 ifdef CONFIG_PPC32
 CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o		+= -fPIC
@@ -87,6 +84,7 @@ obj-$(CONFIG_HAVE_HW_BREAKPOINT)	+= hw_breakpoint.o
 obj-$(CONFIG_PPC_DAWR)		+= dawr.o
 obj-$(CONFIG_PPC_BOOK3S_64)	+= cpu_setup_ppc970.o cpu_setup_pa6t.o
 obj-$(CONFIG_PPC_BOOK3S_64)	+= cpu_setup_power.o
+obj-$(CONFIG_PPC_BOOK3S_64)	+= dexcr.o
 obj-$(CONFIG_PPC_BOOK3S_64)	+= mce.o mce_power.o
 obj-$(CONFIG_PPC_BOOK3E_64)	+= exceptions-64e.o idle_64e.o
 obj-$(CONFIG_PPC_BARRIER_NOSPEC) += security.o
@@ -190,9 +188,6 @@ GCOV_PROFILE_kprobes-ftrace.o := n
 KCOV_INSTRUMENT_kprobes-ftrace.o := n
 KCSAN_SANITIZE_kprobes-ftrace.o := n
 UBSAN_SANITIZE_kprobes-ftrace.o := n
-GCOV_PROFILE_syscall_64.o := n
-KCOV_INSTRUMENT_syscall_64.o := n
-UBSAN_SANITIZE_syscall_64.o := n
 UBSAN_SANITIZE_vdso.o := n
 
 # Necessary for booting with kcov enabled on book3e machines
diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S b/arch/powerpc/kernel/cpu_setup_6xx.S
index bfd3f442e5..ab3ca74e67 100644
--- a/arch/powerpc/kernel/cpu_setup_6xx.S
+++ b/arch/powerpc/kernel/cpu_setup_6xx.S
@@ -401,7 +401,7 @@ _GLOBAL(__save_cpu_setup)
 	andi.	r3,r3,0xff00
 	cmpwi	cr0,r3,0x0200
 	bne	1f
-	mfspr	r4,SPRN_HID2
+	mfspr	r4,SPRN_HID2_750FX
 	stw	r4,CS_HID2(r5)
 1:
 	mtcr	r7
@@ -496,7 +496,7 @@ _GLOBAL(__restore_cpu_setup)
 	bne	4f
 	lwz	r4,CS_HID2(r5)
 	rlwinm	r4,r4,0,19,17
-	mtspr	SPRN_HID2,r4
+	mtspr	SPRN_HID2_750FX,r4
 	sync
 4:
 	lwz	r4,CS_HID1(r5)
diff --git a/arch/powerpc/kernel/dexcr.c b/arch/powerpc/kernel/dexcr.c
new file mode 100644
index 0000000000..3a0358e91c
--- /dev/null
+++ b/arch/powerpc/kernel/dexcr.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/capability.h>
+#include <linux/cpu.h>
+#include <linux/init.h>
+#include <linux/prctl.h>
+#include <linux/sched.h>
+
+#include <asm/cpu_has_feature.h>
+#include <asm/cputable.h>
+#include <asm/processor.h>
+#include <asm/reg.h>
+
+static int __init init_task_dexcr(void)
+{
+	if (!early_cpu_has_feature(CPU_FTR_ARCH_31))
+		return 0;
+
+	current->thread.dexcr_onexec = mfspr(SPRN_DEXCR);
+
+	return 0;
+}
+early_initcall(init_task_dexcr)
+
+/* Allow thread local configuration of these by default */
+#define DEXCR_PRCTL_EDITABLE ( \
+	DEXCR_PR_IBRTPD | \
+	DEXCR_PR_SRAPD | \
+	DEXCR_PR_NPHIE)
+
+static int prctl_to_aspect(unsigned long which, unsigned int *aspect)
+{
+	switch (which) {
+	case PR_PPC_DEXCR_SBHE:
+		*aspect = DEXCR_PR_SBHE;
+		break;
+	case PR_PPC_DEXCR_IBRTPD:
+		*aspect = DEXCR_PR_IBRTPD;
+		break;
+	case PR_PPC_DEXCR_SRAPD:
+		*aspect = DEXCR_PR_SRAPD;
+		break;
+	case PR_PPC_DEXCR_NPHIE:
+		*aspect = DEXCR_PR_NPHIE;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+int get_dexcr_prctl(struct task_struct *task, unsigned long which)
+{
+	unsigned int aspect;
+	int ret;
+
+	ret = prctl_to_aspect(which, &aspect);
+	if (ret)
+		return ret;
+
+	if (aspect & DEXCR_PRCTL_EDITABLE)
+		ret |= PR_PPC_DEXCR_CTRL_EDITABLE;
+
+	if (aspect & mfspr(SPRN_DEXCR))
+		ret |= PR_PPC_DEXCR_CTRL_SET;
+	else
+		ret |= PR_PPC_DEXCR_CTRL_CLEAR;
+
+	if (aspect & task->thread.dexcr_onexec)
+		ret |= PR_PPC_DEXCR_CTRL_SET_ONEXEC;
+	else
+		ret |= PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC;
+
+	return ret;
+}
+
+int set_dexcr_prctl(struct task_struct *task, unsigned long which, unsigned long ctrl)
+{
+	unsigned long dexcr;
+	unsigned int aspect;
+	int err = 0;
+
+	err = prctl_to_aspect(which, &aspect);
+	if (err)
+		return err;
+
+	if (!(aspect & DEXCR_PRCTL_EDITABLE))
+		return -EPERM;
+
+	if (ctrl & ~PR_PPC_DEXCR_CTRL_MASK)
+		return -EINVAL;
+
+	if (ctrl & PR_PPC_DEXCR_CTRL_SET && ctrl & PR_PPC_DEXCR_CTRL_CLEAR)
+		return -EINVAL;
+
+	if (ctrl & PR_PPC_DEXCR_CTRL_SET_ONEXEC && ctrl & PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC)
+		return -EINVAL;
+
+	/*
+	 * We do not want an unprivileged process being able to disable
+	 * a setuid process's hash check instructions
+	 */
+	if (aspect == DEXCR_PR_NPHIE &&
+	    ctrl & PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC &&
+	    !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	dexcr = mfspr(SPRN_DEXCR);
+
+	if (ctrl & PR_PPC_DEXCR_CTRL_SET)
+		dexcr |= aspect;
+	else if (ctrl & PR_PPC_DEXCR_CTRL_CLEAR)
+		dexcr &= ~aspect;
+
+	if (ctrl & PR_PPC_DEXCR_CTRL_SET_ONEXEC)
+		task->thread.dexcr_onexec |= aspect;
+	else if (ctrl & PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC)
+		task->thread.dexcr_onexec &= ~aspect;
+
+	mtspr(SPRN_DEXCR, dexcr);
+
+	return 0;
+}
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 8920862ffd..f0ae39e77e 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -216,6 +216,6 @@ const struct dma_map_ops dma_iommu_ops = {
 	.get_required_mask	= dma_iommu_get_required_mask,
 	.mmap			= dma_common_mmap,
 	.get_sgtable		= dma_common_get_sgtable,
-	.alloc_pages		= dma_common_alloc_pages,
+	.alloc_pages_op		= dma_common_alloc_pages,
 	.free_pages		= dma_common_free_pages,
 };
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index ab316e155e..6670063a7a 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -506,9 +506,18 @@ int eeh_dev_check_failure(struct eeh_dev *edev)
 	 * We will punt with the following conditions: Failure to get
 	 * PE's state, EEH not support and Permanently unavailable
 	 * state, PE is in good state.
+	 *
+	 * On the pSeries, after reaching the threshold, get_state might
+	 * return EEH_STATE_NOT_SUPPORT. However, it's possible that the
+	 * device state remains uncleared if the device is not marked
+	 * pci_channel_io_perm_failure. Therefore, consider logging the
+	 * event to let device removal happen.
+	 *
 	 */
 	if ((ret < 0) ||
-	    (ret == EEH_STATE_NOT_SUPPORT) || eeh_state_active(ret)) {
+	    (ret == EEH_STATE_NOT_SUPPORT &&
+	     dev->error_state == pci_channel_io_perm_failure) ||
+	    eeh_state_active(ret)) {
 		eeh_stats.false_positives++;
 		pe->false_positives++;
 		rc = 0;
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 48773d2d9b..7efe04c68f 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -865,9 +865,18 @@ void eeh_handle_normal_event(struct eeh_pe *pe)
 				devices++;
 
 	if (!devices) {
-		pr_debug("EEH: Frozen PHB#%x-PE#%x is empty!\n",
+		pr_warn("EEH: Frozen PHB#%x-PE#%x is empty!\n",
 			pe->phb->global_number, pe->addr);
-		goto out; /* nothing to recover */
+		/*
+		 * The device is removed, tear down its state, on powernv
+		 * hotplug driver would take care of it but not on pseries,
+		 * permanently disable the card as it is hot removed.
+		 *
+		 * In the case of powernv, note that the removal of device
+		 * is covered by pci rescan lock, so no problem even if hotplug
+		 * driver attempts to remove the device.
+		 */
+		goto recover_failed;
 	}
 
 	/* Log the event */
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 7d1b50599d..d283d281d2 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -24,10 +24,10 @@ static int eeh_pe_aux_size = 0;
 static LIST_HEAD(eeh_phb_pe);
 
 /**
- * eeh_set_pe_aux_size - Set PE auxillary data size
- * @size: PE auxillary data size
+ * eeh_set_pe_aux_size - Set PE auxiliary data size
+ * @size: PE auxiliary data size in bytes
  *
- * Set PE auxillary data size
+ * Set PE auxiliary data size.
  */
 void eeh_set_pe_aux_size(int size)
 {
@@ -527,7 +527,7 @@ EXPORT_SYMBOL_GPL(eeh_pe_state_mark);
  * eeh_pe_mark_isolated
  * @pe: EEH PE
  *
- * Record that a PE has been isolated by marking the PE and it's children as
+ * Record that a PE has been isolated by marking the PE and its children as
  * EEH_PE_ISOLATED (and EEH_PE_CFG_BLOCKED, if required) and their PCI devices
  * as pci_channel_io_frozen.
  */
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index d14eda1e85..a612e7513a 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -53,8 +53,6 @@ static struct kobject *fadump_kobj;
 static atomic_t cpus_in_fadump;
 static DEFINE_MUTEX(fadump_mutex);
 
-static struct fadump_mrange_info crash_mrange_info = { "crash", NULL, 0, 0, 0, false };
-
 #define RESERVED_RNGS_SZ	16384 /* 16K - 128 entries */
 #define RESERVED_RNGS_CNT	(RESERVED_RNGS_SZ / \
 				 sizeof(struct fadump_memory_range))
@@ -133,6 +131,41 @@ static int __init fadump_cma_init(void)
 static int __init fadump_cma_init(void) { return 1; }
 #endif /* CONFIG_CMA */
 
+/*
+ * Additional parameters meant for capture kernel are placed in a dedicated area.
+ * If this is capture kernel boot, append these parameters to bootargs.
+ */
+void __init fadump_append_bootargs(void)
+{
+	char *append_args;
+	size_t len;
+
+	if (!fw_dump.dump_active || !fw_dump.param_area_supported || !fw_dump.param_area)
+		return;
+
+	if (fw_dump.param_area >= fw_dump.boot_mem_top) {
+		if (memblock_reserve(fw_dump.param_area, COMMAND_LINE_SIZE)) {
+			pr_warn("WARNING: Can't use additional parameters area!\n");
+			fw_dump.param_area = 0;
+			return;
+		}
+	}
+
+	append_args = (char *)fw_dump.param_area;
+	len = strlen(boot_command_line);
+
+	/*
+	 * Too late to fail even if cmdline size exceeds. Truncate additional parameters
+	 * to cmdline size and proceed anyway.
+	 */
+	if (len + strlen(append_args) >= COMMAND_LINE_SIZE - 1)
+		pr_warn("WARNING: Appending parameters exceeds cmdline size. Truncating!\n");
+
+	pr_debug("Cmdline: %s\n", boot_command_line);
+	snprintf(boot_command_line + len, COMMAND_LINE_SIZE - len, " %s", append_args);
+	pr_info("Updated cmdline: %s\n", boot_command_line);
+}
+
 /* Scan the Firmware Assisted dump configuration details. */
 int __init early_init_dt_scan_fw_dump(unsigned long node, const char *uname,
 				      int depth, void *data)
@@ -223,28 +256,6 @@ static bool is_fadump_mem_area_contiguous(u64 d_start, u64 d_end)
 }
 
 /*
- * Returns true, if there are no holes in boot memory area,
- * false otherwise.
- */
-bool is_fadump_boot_mem_contiguous(void)
-{
-	unsigned long d_start, d_end;
-	bool ret = false;
-	int i;
-
-	for (i = 0; i < fw_dump.boot_mem_regs_cnt; i++) {
-		d_start = fw_dump.boot_mem_addr[i];
-		d_end   = d_start + fw_dump.boot_mem_sz[i];
-
-		ret = is_fadump_mem_area_contiguous(d_start, d_end);
-		if (!ret)
-			break;
-	}
-
-	return ret;
-}
-
-/*
  * Returns true, if there are no holes in reserved memory area,
  * false otherwise.
  */
@@ -373,12 +384,6 @@ static unsigned long __init get_fadump_area_size(void)
 	size = PAGE_ALIGN(size);
 	size += fw_dump.boot_memory_size;
 	size += sizeof(struct fadump_crash_info_header);
-	size += sizeof(struct elfhdr); /* ELF core header.*/
-	size += sizeof(struct elf_phdr); /* place holder for cpu notes */
-	/* Program headers for crash memory regions. */
-	size += sizeof(struct elf_phdr) * (memblock_num_regions(memory) + 2);
-
-	size = PAGE_ALIGN(size);
 
 	/* This is to hold kernel metadata on platforms that support it */
 	size += (fw_dump.ops->fadump_get_metadata_size ?
@@ -389,10 +394,11 @@ static unsigned long __init get_fadump_area_size(void)
 static int __init add_boot_mem_region(unsigned long rstart,
 				      unsigned long rsize)
 {
+	int max_boot_mem_rgns = fw_dump.ops->fadump_max_boot_mem_rgns();
 	int i = fw_dump.boot_mem_regs_cnt++;
 
-	if (fw_dump.boot_mem_regs_cnt > FADUMP_MAX_MEM_REGS) {
-		fw_dump.boot_mem_regs_cnt = FADUMP_MAX_MEM_REGS;
+	if (fw_dump.boot_mem_regs_cnt > max_boot_mem_rgns) {
+		fw_dump.boot_mem_regs_cnt = max_boot_mem_rgns;
 		return 0;
 	}
 
@@ -573,22 +579,6 @@ int __init fadump_reserve_mem(void)
 		}
 	}
 
-	/*
-	 * Calculate the memory boundary.
-	 * If memory_limit is less than actual memory boundary then reserve
-	 * the memory for fadump beyond the memory_limit and adjust the
-	 * memory_limit accordingly, so that the running kernel can run with
-	 * specified memory_limit.
-	 */
-	if (memory_limit && memory_limit < memblock_end_of_DRAM()) {
-		size = get_fadump_area_size();
-		if ((memory_limit + size) < memblock_end_of_DRAM())
-			memory_limit += size;
-		else
-			memory_limit = memblock_end_of_DRAM();
-		printk(KERN_INFO "Adjusted memory_limit for firmware-assisted"
-				" dump, now %#016llx\n", memory_limit);
-	}
 	if (memory_limit)
 		mem_boundary = memory_limit;
 	else
@@ -705,7 +695,7 @@ void crash_fadump(struct pt_regs *regs, const char *str)
 	 * old_cpu == -1 means this is the first CPU which has come here,
 	 * go ahead and trigger fadump.
 	 *
-	 * old_cpu != -1 means some other CPU has already on it's way
+	 * old_cpu != -1 means some other CPU has already on its way
 	 * to trigger fadump, just keep looping here.
 	 */
 	this_cpu = smp_processor_id();
@@ -931,36 +921,6 @@ static inline int fadump_add_mem_range(struct fadump_mrange_info *mrange_info,
 	return 0;
 }
 
-static int fadump_exclude_reserved_area(u64 start, u64 end)
-{
-	u64 ra_start, ra_end;
-	int ret = 0;
-
-	ra_start = fw_dump.reserve_dump_area_start;
-	ra_end = ra_start + fw_dump.reserve_dump_area_size;
-
-	if ((ra_start < end) && (ra_end > start)) {
-		if ((start < ra_start) && (end > ra_end)) {
-			ret = fadump_add_mem_range(&crash_mrange_info,
-						   start, ra_start);
-			if (ret)
-				return ret;
-
-			ret = fadump_add_mem_range(&crash_mrange_info,
-						   ra_end, end);
-		} else if (start < ra_start) {
-			ret = fadump_add_mem_range(&crash_mrange_info,
-						   start, ra_start);
-		} else if (ra_end < end) {
-			ret = fadump_add_mem_range(&crash_mrange_info,
-						   ra_end, end);
-		}
-	} else
-		ret = fadump_add_mem_range(&crash_mrange_info, start, end);
-
-	return ret;
-}
-
 static int fadump_init_elfcore_header(char *bufp)
 {
 	struct elfhdr *elf;
@@ -998,52 +958,6 @@ static int fadump_init_elfcore_header(char *bufp)
 }
 
 /*
- * Traverse through memblock structure and setup crash memory ranges. These
- * ranges will be used create PT_LOAD program headers in elfcore header.
- */
-static int fadump_setup_crash_memory_ranges(void)
-{
-	u64 i, start, end;
-	int ret;
-
-	pr_debug("Setup crash memory ranges.\n");
-	crash_mrange_info.mem_range_cnt = 0;
-
-	/*
-	 * Boot memory region(s) registered with firmware are moved to
-	 * different location at the time of crash. Create separate program
-	 * header(s) for this memory chunk(s) with the correct offset.
-	 */
-	for (i = 0; i < fw_dump.boot_mem_regs_cnt; i++) {
-		start = fw_dump.boot_mem_addr[i];
-		end = start + fw_dump.boot_mem_sz[i];
-		ret = fadump_add_mem_range(&crash_mrange_info, start, end);
-		if (ret)
-			return ret;
-	}
-
-	for_each_mem_range(i, &start, &end) {
-		/*
-		 * skip the memory chunk that is already added
-		 * (0 through boot_memory_top).
-		 */
-		if (start < fw_dump.boot_mem_top) {
-			if (end > fw_dump.boot_mem_top)
-				start = fw_dump.boot_mem_top;
-			else
-				continue;
-		}
-
-		/* add this range excluding the reserved dump area. */
-		ret = fadump_exclude_reserved_area(start, end);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-/*
  * If the given physical address falls within the boot memory region then
  * return the relocated address that points to the dump region reserved
  * for saving initial boot memory contents.
@@ -1073,36 +987,50 @@ static inline unsigned long fadump_relocate(unsigned long paddr)
 	return raddr;
 }
 
-static int fadump_create_elfcore_headers(char *bufp)
+static void __init populate_elf_pt_load(struct elf_phdr *phdr, u64 start,
+			     u64 size, unsigned long long offset)
 {
-	unsigned long long raddr, offset;
-	struct elf_phdr *phdr;
+	phdr->p_align	= 0;
+	phdr->p_memsz	= size;
+	phdr->p_filesz	= size;
+	phdr->p_paddr	= start;
+	phdr->p_offset	= offset;
+	phdr->p_type	= PT_LOAD;
+	phdr->p_flags	= PF_R|PF_W|PF_X;
+	phdr->p_vaddr	= (unsigned long)__va(start);
+}
+
+static void __init fadump_populate_elfcorehdr(struct fadump_crash_info_header *fdh)
+{
+	char *bufp;
 	struct elfhdr *elf;
-	int i, j;
+	struct elf_phdr *phdr;
+	u64 boot_mem_dest_offset;
+	unsigned long long i, ra_start, ra_end, ra_size, mstart, mend;
 
+	bufp = (char *) fw_dump.elfcorehdr_addr;
 	fadump_init_elfcore_header(bufp);
 	elf = (struct elfhdr *)bufp;
 	bufp += sizeof(struct elfhdr);
 
 	/*
-	 * setup ELF PT_NOTE, place holder for cpu notes info. The notes info
-	 * will be populated during second kernel boot after crash. Hence
-	 * this PT_NOTE will always be the first elf note.
+	 * Set up ELF PT_NOTE, a placeholder for CPU notes information.
+	 * The notes info will be populated later by platform-specific code.
+	 * Hence, this PT_NOTE will always be the first ELF note.
 	 *
 	 * NOTE: Any new ELF note addition should be placed after this note.
 	 */
 	phdr = (struct elf_phdr *)bufp;
 	bufp += sizeof(struct elf_phdr);
 	phdr->p_type = PT_NOTE;
-	phdr->p_flags = 0;
-	phdr->p_vaddr = 0;
-	phdr->p_align = 0;
-
-	phdr->p_offset = 0;
-	phdr->p_paddr = 0;
-	phdr->p_filesz = 0;
-	phdr->p_memsz = 0;
-
+	phdr->p_flags	= 0;
+	phdr->p_vaddr	= 0;
+	phdr->p_align	= 0;
+	phdr->p_offset	= 0;
+	phdr->p_paddr	= 0;
+	phdr->p_filesz	= 0;
+	phdr->p_memsz	= 0;
+	/* Increment number of program headers. */
 	(elf->e_phnum)++;
 
 	/* setup ELF PT_NOTE for vmcoreinfo */
@@ -1112,55 +1040,66 @@ static int fadump_create_elfcore_headers(char *bufp)
 	phdr->p_flags	= 0;
 	phdr->p_vaddr	= 0;
 	phdr->p_align	= 0;
-
-	phdr->p_paddr	= fadump_relocate(paddr_vmcoreinfo_note());
-	phdr->p_offset	= phdr->p_paddr;
-	phdr->p_memsz	= phdr->p_filesz = VMCOREINFO_NOTE_SIZE;
-
+	phdr->p_paddr	= phdr->p_offset = fdh->vmcoreinfo_raddr;
+	phdr->p_memsz	= phdr->p_filesz = fdh->vmcoreinfo_size;
 	/* Increment number of program headers. */
 	(elf->e_phnum)++;
 
-	/* setup PT_LOAD sections. */
-	j = 0;
-	offset = 0;
-	raddr = fw_dump.boot_mem_addr[0];
-	for (i = 0; i < crash_mrange_info.mem_range_cnt; i++) {
-		u64 mbase, msize;
-
-		mbase = crash_mrange_info.mem_ranges[i].base;
-		msize = crash_mrange_info.mem_ranges[i].size;
-		if (!msize)
-			continue;
-
+	/*
+	 * Setup PT_LOAD sections. first include boot memory regions
+	 * and then add rest of the memory regions.
+	 */
+	boot_mem_dest_offset = fw_dump.boot_mem_dest_addr;
+	for (i = 0; i < fw_dump.boot_mem_regs_cnt; i++) {
 		phdr = (struct elf_phdr *)bufp;
 		bufp += sizeof(struct elf_phdr);
-		phdr->p_type	= PT_LOAD;
-		phdr->p_flags	= PF_R|PF_W|PF_X;
-		phdr->p_offset	= mbase;
-
-		if (mbase == raddr) {
-			/*
-			 * The entire real memory region will be moved by
-			 * firmware to the specified destination_address.
-			 * Hence set the correct offset.
-			 */
-			phdr->p_offset = fw_dump.boot_mem_dest_addr + offset;
-			if (j < (fw_dump.boot_mem_regs_cnt - 1)) {
-				offset += fw_dump.boot_mem_sz[j];
-				raddr = fw_dump.boot_mem_addr[++j];
-			}
+		populate_elf_pt_load(phdr, fw_dump.boot_mem_addr[i],
+				     fw_dump.boot_mem_sz[i],
+				     boot_mem_dest_offset);
+		/* Increment number of program headers. */
+		(elf->e_phnum)++;
+		boot_mem_dest_offset += fw_dump.boot_mem_sz[i];
+	}
+
+	/* Memory reserved for fadump in first kernel */
+	ra_start = fw_dump.reserve_dump_area_start;
+	ra_size = get_fadump_area_size();
+	ra_end = ra_start + ra_size;
+
+	phdr = (struct elf_phdr *)bufp;
+	for_each_mem_range(i, &mstart, &mend) {
+		/* Boot memory regions already added, skip them now */
+		if (mstart < fw_dump.boot_mem_top) {
+			if (mend > fw_dump.boot_mem_top)
+				mstart = fw_dump.boot_mem_top;
+			else
+				continue;
 		}
 
-		phdr->p_paddr = mbase;
-		phdr->p_vaddr = (unsigned long)__va(mbase);
-		phdr->p_filesz = msize;
-		phdr->p_memsz = msize;
-		phdr->p_align = 0;
+		/* Handle memblock regions overlaps with fadump reserved area */
+		if ((ra_start < mend) && (ra_end > mstart)) {
+			if ((mstart < ra_start) && (mend > ra_end)) {
+				populate_elf_pt_load(phdr, mstart, ra_start - mstart, mstart);
+				/* Increment number of program headers. */
+				(elf->e_phnum)++;
+				bufp += sizeof(struct elf_phdr);
+				phdr = (struct elf_phdr *)bufp;
+				populate_elf_pt_load(phdr, ra_end, mend - ra_end, ra_end);
+			} else if (mstart < ra_start) {
+				populate_elf_pt_load(phdr, mstart, ra_start - mstart, mstart);
+			} else if (ra_end < mend) {
+				populate_elf_pt_load(phdr, ra_end, mend - ra_end, ra_end);
+			}
+		} else {
+		/* No overlap with fadump reserved memory region */
+			populate_elf_pt_load(phdr, mstart, mend - mstart, mstart);
+		}
 
 		/* Increment number of program headers. */
 		(elf->e_phnum)++;
+		bufp += sizeof(struct elf_phdr);
+		phdr = (struct elf_phdr *) bufp;
 	}
-	return 0;
 }
 
 static unsigned long init_fadump_header(unsigned long addr)
@@ -1175,14 +1114,25 @@ static unsigned long init_fadump_header(unsigned long addr)
 
 	memset(fdh, 0, sizeof(struct fadump_crash_info_header));
 	fdh->magic_number = FADUMP_CRASH_INFO_MAGIC;
-	fdh->elfcorehdr_addr = addr;
+	fdh->version = FADUMP_HEADER_VERSION;
 	/* We will set the crashing cpu id in crash_fadump() during crash. */
 	fdh->crashing_cpu = FADUMP_CPU_UNKNOWN;
+
+	/*
+	 * The physical address and size of vmcoreinfo are required in the
+	 * second kernel to prepare elfcorehdr.
+	 */
+	fdh->vmcoreinfo_raddr = fadump_relocate(paddr_vmcoreinfo_note());
+	fdh->vmcoreinfo_size = VMCOREINFO_NOTE_SIZE;
+
+
+	fdh->pt_regs_sz = sizeof(struct pt_regs);
 	/*
 	 * When LPAR is terminated by PYHP, ensure all possible CPUs'
 	 * register data is processed while exporting the vmcore.
 	 */
 	fdh->cpu_mask = *cpu_possible_mask;
+	fdh->cpu_mask_sz = sizeof(struct cpumask);
 
 	return addr;
 }
@@ -1190,8 +1140,6 @@ static unsigned long init_fadump_header(unsigned long addr)
 static int register_fadump(void)
 {
 	unsigned long addr;
-	void *vaddr;
-	int ret;
 
 	/*
 	 * If no memory is reserved then we can not register for firmware-
@@ -1200,18 +1148,10 @@ static int register_fadump(void)
 	if (!fw_dump.reserve_dump_area_size)
 		return -ENODEV;
 
-	ret = fadump_setup_crash_memory_ranges();
-	if (ret)
-		return ret;
-
 	addr = fw_dump.fadumphdr_addr;
 
 	/* Initialize fadump crash info header. */
 	addr = init_fadump_header(addr);
-	vaddr = __va(addr);
-
-	pr_debug("Creating ELF core headers at %#016lx\n", addr);
-	fadump_create_elfcore_headers(vaddr);
 
 	/* register the future kernel dump with firmware. */
 	pr_debug("Registering for firmware-assisted kernel dump...\n");
@@ -1230,7 +1170,6 @@ void fadump_cleanup(void)
 	} else if (fw_dump.dump_registered) {
 		/* Un-register Firmware-assisted dump if it was registered. */
 		fw_dump.ops->fadump_unregister(&fw_dump);
-		fadump_free_mem_ranges(&crash_mrange_info);
 	}
 
 	if (fw_dump.ops->fadump_cleanup)
@@ -1416,6 +1355,22 @@ static void fadump_release_memory(u64 begin, u64 end)
 		fadump_release_reserved_area(tstart, end);
 }
 
+static void fadump_free_elfcorehdr_buf(void)
+{
+	if (fw_dump.elfcorehdr_addr == 0 || fw_dump.elfcorehdr_size == 0)
+		return;
+
+	/*
+	 * Before freeing the memory of `elfcorehdr`, reset the global
+	 * `elfcorehdr_addr` to prevent modules like `vmcore` from accessing
+	 * invalid memory.
+	 */
+	elfcorehdr_addr = ELFCORE_ADDR_ERR;
+	fadump_free_buffer(fw_dump.elfcorehdr_addr, fw_dump.elfcorehdr_size);
+	fw_dump.elfcorehdr_addr = 0;
+	fw_dump.elfcorehdr_size = 0;
+}
+
 static void fadump_invalidate_release_mem(void)
 {
 	mutex_lock(&fadump_mutex);
@@ -1427,6 +1382,7 @@ static void fadump_invalidate_release_mem(void)
 	fadump_cleanup();
 	mutex_unlock(&fadump_mutex);
 
+	fadump_free_elfcorehdr_buf();
 	fadump_release_memory(fw_dump.boot_mem_top, memblock_end_of_DRAM());
 	fadump_free_cpu_notes_buf();
 
@@ -1484,6 +1440,18 @@ static ssize_t enabled_show(struct kobject *kobj,
 	return sprintf(buf, "%d\n", fw_dump.fadump_enabled);
 }
 
+/*
+ * /sys/kernel/fadump/hotplug_ready sysfs node returns 1, which inidcates
+ * to usersapce that fadump re-registration is not required on memory
+ * hotplug events.
+ */
+static ssize_t hotplug_ready_show(struct kobject *kobj,
+				      struct kobj_attribute *attr,
+				      char *buf)
+{
+	return sprintf(buf, "%d\n", 1);
+}
+
 static ssize_t mem_reserved_show(struct kobject *kobj,
 				 struct kobj_attribute *attr,
 				 char *buf)
@@ -1498,6 +1466,43 @@ static ssize_t registered_show(struct kobject *kobj,
 	return sprintf(buf, "%d\n", fw_dump.dump_registered);
 }
 
+static ssize_t bootargs_append_show(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   char *buf)
+{
+	return sprintf(buf, "%s\n", (char *)__va(fw_dump.param_area));
+}
+
+static ssize_t bootargs_append_store(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   const char *buf, size_t count)
+{
+	char *params;
+
+	if (!fw_dump.fadump_enabled || fw_dump.dump_active)
+		return -EPERM;
+
+	if (count >= COMMAND_LINE_SIZE)
+		return -EINVAL;
+
+	/*
+	 * Fail here instead of handling this scenario with
+	 * some silly workaround in capture kernel.
+	 */
+	if (saved_command_line_len + count >= COMMAND_LINE_SIZE) {
+		pr_err("Appending parameters exceeds cmdline size!\n");
+		return -ENOSPC;
+	}
+
+	params = __va(fw_dump.param_area);
+	strscpy_pad(params, buf, COMMAND_LINE_SIZE);
+	/* Remove newline character at the end. */
+	if (params[count-1] == '\n')
+		params[count-1] = '\0';
+
+	return count;
+}
+
 static ssize_t registered_store(struct kobject *kobj,
 				struct kobj_attribute *attr,
 				const char *buf, size_t count)
@@ -1556,11 +1561,14 @@ static struct kobj_attribute release_attr = __ATTR_WO(release_mem);
 static struct kobj_attribute enable_attr = __ATTR_RO(enabled);
 static struct kobj_attribute register_attr = __ATTR_RW(registered);
 static struct kobj_attribute mem_reserved_attr = __ATTR_RO(mem_reserved);
+static struct kobj_attribute hotplug_ready_attr = __ATTR_RO(hotplug_ready);
+static struct kobj_attribute bootargs_append_attr = __ATTR_RW(bootargs_append);
 
 static struct attribute *fadump_attrs[] = {
 	&enable_attr.attr,
 	&register_attr.attr,
 	&mem_reserved_attr.attr,
+	&hotplug_ready_attr.attr,
 	NULL,
 };
 
@@ -1632,6 +1640,150 @@ static void __init fadump_init_files(void)
 	return;
 }
 
+static int __init fadump_setup_elfcorehdr_buf(void)
+{
+	int elf_phdr_cnt;
+	unsigned long elfcorehdr_size;
+
+	/*
+	 * Program header for CPU notes comes first, followed by one for
+	 * vmcoreinfo, and the remaining program headers correspond to
+	 * memory regions.
+	 */
+	elf_phdr_cnt = 2 + fw_dump.boot_mem_regs_cnt + memblock_num_regions(memory);
+	elfcorehdr_size = sizeof(struct elfhdr) + (elf_phdr_cnt * sizeof(struct elf_phdr));
+	elfcorehdr_size = PAGE_ALIGN(elfcorehdr_size);
+
+	fw_dump.elfcorehdr_addr = (u64)fadump_alloc_buffer(elfcorehdr_size);
+	if (!fw_dump.elfcorehdr_addr) {
+		pr_err("Failed to allocate %lu bytes for elfcorehdr\n",
+		       elfcorehdr_size);
+		return -ENOMEM;
+	}
+	fw_dump.elfcorehdr_size = elfcorehdr_size;
+	return 0;
+}
+
+/*
+ * Check if the fadump header of crashed kernel is compatible with fadump kernel.
+ *
+ * It checks the magic number, endianness, and size of non-primitive type
+ * members of fadump header to ensure safe dump collection.
+ */
+static bool __init is_fadump_header_compatible(struct fadump_crash_info_header *fdh)
+{
+	if (fdh->magic_number == FADUMP_CRASH_INFO_MAGIC_OLD) {
+		pr_err("Old magic number, can't process the dump.\n");
+		return false;
+	}
+
+	if (fdh->magic_number != FADUMP_CRASH_INFO_MAGIC) {
+		if (fdh->magic_number == swab64(FADUMP_CRASH_INFO_MAGIC))
+			pr_err("Endianness mismatch between the crashed and fadump kernels.\n");
+		else
+			pr_err("Fadump header is corrupted.\n");
+
+		return false;
+	}
+
+	/*
+	 * Dump collection is not safe if the size of non-primitive type members
+	 * of the fadump header do not match between crashed and fadump kernel.
+	 */
+	if (fdh->pt_regs_sz != sizeof(struct pt_regs) ||
+	    fdh->cpu_mask_sz != sizeof(struct cpumask)) {
+		pr_err("Fadump header size mismatch.\n");
+		return false;
+	}
+
+	return true;
+}
+
+static void __init fadump_process(void)
+{
+	struct fadump_crash_info_header *fdh;
+
+	fdh = (struct fadump_crash_info_header *) __va(fw_dump.fadumphdr_addr);
+	if (!fdh) {
+		pr_err("Crash info header is empty.\n");
+		goto err_out;
+	}
+
+	/* Avoid processing the dump if fadump header isn't compatible */
+	if (!is_fadump_header_compatible(fdh))
+		goto err_out;
+
+	/* Allocate buffer for elfcorehdr */
+	if (fadump_setup_elfcorehdr_buf())
+		goto err_out;
+
+	fadump_populate_elfcorehdr(fdh);
+
+	/* Let platform update the CPU notes in elfcorehdr */
+	if (fw_dump.ops->fadump_process(&fw_dump) < 0)
+		goto err_out;
+
+	/*
+	 * elfcorehdr is now ready to be exported.
+	 *
+	 * set elfcorehdr_addr so that vmcore module will export the
+	 * elfcorehdr through '/proc/vmcore'.
+	 */
+	elfcorehdr_addr = virt_to_phys((void *)fw_dump.elfcorehdr_addr);
+	return;
+
+err_out:
+	fadump_invalidate_release_mem();
+}
+
+/*
+ * Reserve memory to store additional parameters to be passed
+ * for fadump/capture kernel.
+ */
+static void __init fadump_setup_param_area(void)
+{
+	phys_addr_t range_start, range_end;
+
+	if (!fw_dump.param_area_supported || fw_dump.dump_active)
+		return;
+
+	/* This memory can't be used by PFW or bootloader as it is shared across kernels */
+	if (radix_enabled()) {
+		/*
+		 * Anywhere in the upper half should be good enough as all memory
+		 * is accessible in real mode.
+		 */
+		range_start = memblock_end_of_DRAM() / 2;
+		range_end = memblock_end_of_DRAM();
+	} else {
+		/*
+		 * Passing additional parameters is supported for hash MMU only
+		 * if the first memory block size is 768MB or higher.
+		 */
+		if (ppc64_rma_size < 0x30000000)
+			return;
+
+		/*
+		 * 640 MB to 768 MB is not used by PFW/bootloader. So, try reserving
+		 * memory for passing additional parameters in this range to avoid
+		 * being stomped on by PFW/bootloader.
+		 */
+		range_start = 0x2A000000;
+		range_end = range_start + 0x4000000;
+	}
+
+	fw_dump.param_area = memblock_phys_alloc_range(COMMAND_LINE_SIZE,
+						       COMMAND_LINE_SIZE,
+						       range_start,
+						       range_end);
+	if (!fw_dump.param_area || sysfs_create_file(fadump_kobj, &bootargs_append_attr.attr)) {
+		pr_warn("WARNING: Could not setup area to pass additional parameters!\n");
+		return;
+	}
+
+	memset(phys_to_virt(fw_dump.param_area), 0, COMMAND_LINE_SIZE);
+}
+
 /*
  * Prepare for firmware-assisted dump.
  */
@@ -1651,15 +1803,11 @@ int __init setup_fadump(void)
 	 * saving it to the disk.
 	 */
 	if (fw_dump.dump_active) {
-		/*
-		 * if dump process fails then invalidate the registration
-		 * and release memory before proceeding for re-registration.
-		 */
-		if (fw_dump.ops->fadump_process(&fw_dump) < 0)
-			fadump_invalidate_release_mem();
+		fadump_process();
 	}
 	/* Initialize the kernel dump memory structure and register with f/w */
 	else if (fw_dump.reserve_dump_area_size) {
+		fadump_setup_param_area();
 		fw_dump.ops->fadump_init_mem_struct(&fw_dump);
 		register_fadump();
 	}
@@ -1735,8 +1883,3 @@ static void __init fadump_reserve_crash_area(u64 base)
 		memblock_reserve(mstart, msize);
 	}
 }
-
-unsigned long __init arch_reserved_kernel_pages(void)
-{
-	return memblock_reserved_size() / PAGE_SIZE;
-}
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 647b0b445e..edc479a7c2 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -199,12 +199,12 @@ instruction_counter:
 	mfspr	r10, SPRN_SRR0	/* Get effective address of fault */
 	INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11)
 	mtspr	SPRN_MD_EPN, r10
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
 	mfcr	r11
 	compare_to_kernel_boundary r10, r10
 #endif
 	mfspr	r10, SPRN_M_TWB	/* Get level 1 table */
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
 	blt+	3f
 	rlwinm	r10, r10, 0, 20, 31
 	oris	r10, r10, (swapper_pg_dir - PAGE_OFFSET)@ha
diff --git a/arch/powerpc/kernel/head_book3s_32.S b/arch/powerpc/kernel/head_book3s_32.S
index c1d89764dd..57196883a0 100644
--- a/arch/powerpc/kernel/head_book3s_32.S
+++ b/arch/powerpc/kernel/head_book3s_32.S
@@ -419,14 +419,14 @@ InstructionTLBMiss:
  */
 	/* Get PTE (linux-style) and check access */
 	mfspr	r3,SPRN_IMISS
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
 	lis	r1, TASK_SIZE@h		/* check if kernel address */
 	cmplw	0,r1,r3
 #endif
 	mfspr	r2, SPRN_SDR1
 	li	r1,_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_EXEC
 	rlwinm	r2, r2, 28, 0xfffff000
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
 	li	r0, 3
 	bgt-	112f
 	lis	r2, (swapper_pg_dir - PAGE_OFFSET)@ha	/* if kernel address, use */
@@ -442,7 +442,7 @@ InstructionTLBMiss:
 	andc.	r1,r1,r2		/* check access & ~permission */
 	bne-	InstructionAddressInvalid /* return if access not permitted */
 	/* Convert linux-style PTE to low word of PPC-style PTE */
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_EXECMEM
 	rlwimi	r2, r0, 0, 31, 31	/* userspace ? -> PP lsb */
 #endif
 	ori	r1, r1, 0xe06		/* clear out reserved bits */
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 29a8c8e185..b70b4f9356 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -26,6 +26,7 @@
 #include <linux/iommu.h>
 #include <linux/sched.h>
 #include <linux/debugfs.h>
+#include <linux/vmalloc.h>
 #include <asm/io.h>
 #include <asm/iommu.h>
 #include <asm/pci-bridge.h>
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index bbca90a5e2..14c5ddec30 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -19,8 +19,8 @@
 #include <linux/extable.h>
 #include <linux/kdebug.h>
 #include <linux/slab.h>
-#include <linux/moduleloader.h>
 #include <linux/set_memory.h>
+#include <linux/execmem.h>
 #include <asm/code-patching.h>
 #include <asm/cacheflush.h>
 #include <asm/sstep.h>
@@ -126,26 +126,6 @@ kprobe_opcode_t *arch_adjust_kprobe_addr(unsigned long addr, unsigned long offse
 	return (kprobe_opcode_t *)(addr + offset);
 }
 
-void *alloc_insn_page(void)
-{
-	void *page;
-
-	page = module_alloc(PAGE_SIZE);
-	if (!page)
-		return NULL;
-
-	if (strict_module_rwx_enabled()) {
-		int err = set_memory_rox((unsigned long)page, 1);
-
-		if (err)
-			goto error;
-	}
-	return page;
-error:
-	module_memfree(page);
-	return NULL;
-}
-
 int arch_prepare_kprobe(struct kprobe *p)
 {
 	int ret = 0;
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 1a8cdafd68..91123e102d 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -192,7 +192,7 @@ _GLOBAL(scom970_read)
 	xori	r0,r0,MSR_EE
 	mtmsrd	r0,1
 
-	/* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits
+	/* rotate 24 bits SCOM address 8 bits left and mask out its low 8 bits
 	 * (including parity). On current CPUs they must be 0'd,
 	 * and finally or in RW bit
 	 */
@@ -226,7 +226,7 @@ _GLOBAL(scom970_write)
 	xori	r0,r0,MSR_EE
 	mtmsrd	r0,1
 
-	/* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits
+	/* rotate 24 bits SCOM address 8 bits left and mask out its low 8 bits
 	 * (including parity). On current CPUs they must be 0'd.
 	 */
 
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index f6d6ae0a16..baeb24c102 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -7,7 +7,6 @@
 #include <linux/elf.h>
 #include <linux/moduleloader.h>
 #include <linux/err.h>
-#include <linux/vmalloc.h>
 #include <linux/mm.h>
 #include <linux/bug.h>
 #include <asm/module.h>
@@ -17,8 +16,6 @@
 #include <asm/setup.h>
 #include <asm/sections.h>
 
-static LIST_HEAD(module_bug_list);
-
 static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
 				    const Elf_Shdr *sechdrs,
 				    const char *name)
@@ -88,40 +85,3 @@ int module_finalize(const Elf_Ehdr *hdr,
 
 	return 0;
 }
-
-static __always_inline void *
-__module_alloc(unsigned long size, unsigned long start, unsigned long end, bool nowarn)
-{
-	pgprot_t prot = strict_module_rwx_enabled() ? PAGE_KERNEL : PAGE_KERNEL_EXEC;
-	gfp_t gfp = GFP_KERNEL | (nowarn ? __GFP_NOWARN : 0);
-
-	/*
-	 * Don't do huge page allocations for modules yet until more testing
-	 * is done. STRICT_MODULE_RWX may require extra work to support this
-	 * too.
-	 */
-	return __vmalloc_node_range(size, 1, start, end, gfp, prot,
-				    VM_FLUSH_RESET_PERMS,
-				    NUMA_NO_NODE, __builtin_return_address(0));
-}
-
-void *module_alloc(unsigned long size)
-{
-#ifdef MODULES_VADDR
-	unsigned long limit = (unsigned long)_etext - SZ_32M;
-	void *ptr = NULL;
-
-	BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
-
-	/* First try within 32M limit from _etext to avoid branch trampolines */
-	if (MODULES_VADDR < PAGE_OFFSET && MODULES_END > limit)
-		ptr = __module_alloc(size, limit, MODULES_END, true);
-
-	if (!ptr)
-		ptr = __module_alloc(size, MODULES_VADDR, MODULES_END, false);
-
-	return ptr;
-#else
-	return __module_alloc(size, VMALLOC_START, VMALLOC_END, false);
-#endif
-}
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index d95a48eff4..eac84d687b 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -517,7 +517,7 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
 }
 
 /*
- * This one is used by /dev/mem and fbdev who have no clue about the
+ * This one is used by /dev/mem and video who have no clue about the
  * PCI device, it tries to find the PCI device first and calls the
  * above routine
  */
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 9452a54d35..a767178676 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1185,6 +1185,9 @@ static inline void save_sprs(struct thread_struct *t)
 
 	if (cpu_has_feature(CPU_FTR_DEXCR_NPHIE))
 		t->hashkeyr = mfspr(SPRN_HASHKEYR);
+
+	if (cpu_has_feature(CPU_FTR_ARCH_31))
+		t->dexcr = mfspr(SPRN_DEXCR);
 #endif
 }
 
@@ -1267,6 +1270,10 @@ static inline void restore_sprs(struct thread_struct *old_thread,
 	if (cpu_has_feature(CPU_FTR_DEXCR_NPHIE) &&
 	    old_thread->hashkeyr != new_thread->hashkeyr)
 		mtspr(SPRN_HASHKEYR, new_thread->hashkeyr);
+
+	if (cpu_has_feature(CPU_FTR_ARCH_31) &&
+	    old_thread->dexcr != new_thread->dexcr)
+		mtspr(SPRN_DEXCR, new_thread->dexcr);
 #endif
 
 }
@@ -1634,6 +1641,13 @@ void arch_setup_new_exec(void)
 	current->thread.regs->amr  = default_amr;
 	current->thread.regs->iamr  = default_iamr;
 #endif
+
+#ifdef CONFIG_PPC_BOOK3S_64
+	if (cpu_has_feature(CPU_FTR_ARCH_31)) {
+		current->thread.dexcr = current->thread.dexcr_onexec;
+		mtspr(SPRN_DEXCR, current->thread.dexcr);
+	}
+#endif /* CONFIG_PPC_BOOK3S_64 */
 }
 
 #ifdef CONFIG_PPC64
@@ -1647,7 +1661,7 @@ void arch_setup_new_exec(void)
  * cases will happen:
  *
  * 1. The correct thread is running, the wrong thread is not
- * In this situation, the correct thread is woken and proceeds to pass it's
+ * In this situation, the correct thread is woken and proceeds to pass its
  * condition check.
  *
  * 2. Neither threads are running
@@ -1657,15 +1671,15 @@ void arch_setup_new_exec(void)
  * for the wrong thread, or they will execute the condition check immediately.
  *
  * 3. The wrong thread is running, the correct thread is not
- * The wrong thread will be woken, but will fail it's condition check and
+ * The wrong thread will be woken, but will fail its condition check and
  * re-execute wait. The correct thread, when scheduled, will execute either
- * it's condition check (which will pass), or wait, which returns immediately
- * when called the first time after the thread is scheduled, followed by it's
+ * its condition check (which will pass), or wait, which returns immediately
+ * when called the first time after the thread is scheduled, followed by its
  * condition check (which will pass).
  *
  * 4. Both threads are running
- * Both threads will be woken. The wrong thread will fail it's condition check
- * and execute another wait, while the correct thread will pass it's condition
+ * Both threads will be woken. The wrong thread will fail its condition check
+ * and execute another wait, while the correct thread will pass its condition
  * check.
  *
  * @t: the task to set the thread ID for
@@ -1878,6 +1892,9 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
 #ifdef CONFIG_PPC_BOOK3S_64
 	if (cpu_has_feature(CPU_FTR_DEXCR_NPHIE))
 		p->thread.hashkeyr = current->thread.hashkeyr;
+
+	if (cpu_has_feature(CPU_FTR_ARCH_31))
+		p->thread.dexcr = mfspr(SPRN_DEXCR);
 #endif
 	return 0;
 }
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index cd8d8883de..0be07ed407 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -331,6 +331,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 					  void *data)
 {
 	const char *type = of_get_flat_dt_prop(node, "device_type", NULL);
+	const __be32 *cpu_version = NULL;
 	const __be32 *prop;
 	const __be32 *intserv;
 	int i, nthreads;
@@ -420,7 +421,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 		prop = of_get_flat_dt_prop(node, "cpu-version", NULL);
 		if (prop && (be32_to_cpup(prop) & 0xff000000) == 0x0f000000) {
 			identify_cpu(0, be32_to_cpup(prop));
-			seq_buf_printf(&ppc_hw_desc, "0x%04x ", be32_to_cpup(prop));
+			cpu_version = prop;
 		}
 
 		check_cpu_feature_properties(node);
@@ -431,6 +432,12 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 	}
 
 	identical_pvr_fixup(node);
+
+	// We can now add the CPU name & PVR to the hardware description
+	seq_buf_printf(&ppc_hw_desc, "%s 0x%04lx ", cur_cpu_spec->cpu_name, mfspr(SPRN_PVR));
+	if (cpu_version)
+		seq_buf_printf(&ppc_hw_desc, "0x%04x ", be32_to_cpup(cpu_version));
+
 	init_mmu_slb_size(node);
 
 #ifdef CONFIG_PPC64
@@ -779,7 +786,7 @@ static inline void save_fscr_to_task(void) {}
 
 void __init early_init_devtree(void *params)
 {
-	phys_addr_t limit;
+	phys_addr_t int_vector_size;
 
 	DBG(" -> early_init_devtree(%px)\n", params);
 
@@ -813,6 +820,9 @@ void __init early_init_devtree(void *params)
 	 */
 	of_scan_flat_dt(early_init_dt_scan_chosen_ppc, boot_command_line);
 
+	/* Append additional parameters passed for fadump capture kernel */
+	fadump_append_bootargs();
+
 	/* Scan memory nodes and rebuild MEMBLOCKs */
 	early_init_dt_scan_root();
 	early_init_dt_scan_memory_ppc();
@@ -832,9 +842,16 @@ void __init early_init_devtree(void *params)
 	setup_initial_memory_limit(memstart_addr, first_memblock_size);
 	/* Reserve MEMBLOCK regions used by kernel, initrd, dt, etc... */
 	memblock_reserve(PHYSICAL_START, __pa(_end) - PHYSICAL_START);
+#ifdef CONFIG_PPC64
+	/* If relocatable, reserve at least 32k for interrupt vectors etc. */
+	int_vector_size = __end_interrupts - _stext;
+	int_vector_size = max_t(phys_addr_t, SZ_32K, int_vector_size);
+#else
 	/* If relocatable, reserve first 32k for interrupt vectors etc. */
+	int_vector_size = SZ_32K;
+#endif
 	if (PHYSICAL_START > MEMORY_START)
-		memblock_reserve(MEMORY_START, 0x8000);
+		memblock_reserve(MEMORY_START, int_vector_size);
 	reserve_kdump_trampoline();
 #if defined(CONFIG_FA_DUMP) || defined(CONFIG_PRESERVE_FA_DUMP)
 	/*
@@ -846,9 +863,12 @@ void __init early_init_devtree(void *params)
 		reserve_crashkernel();
 	early_reserve_mem();
 
-	/* Ensure that total memory size is page-aligned. */
-	limit = ALIGN(memory_limit ?: memblock_phys_mem_size(), PAGE_SIZE);
-	memblock_enforce_memory_limit(limit);
+	if (memory_limit > memblock_phys_mem_size())
+		memory_limit = 0;
+
+	/* Align down to 16 MB which is large page size with hash page translation */
+	memory_limit = ALIGN_DOWN(memory_limit ?: memblock_phys_mem_size(), SZ_16M);
+	memblock_enforce_memory_limit(memory_limit);
 
 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_PPC_4K_PAGES)
 	if (!early_radix_enabled())
@@ -868,9 +888,6 @@ void __init early_init_devtree(void *params)
 
 	dt_cpu_ftrs_scan();
 
-	// We can now add the CPU name & PVR to the hardware description
-	seq_buf_printf(&ppc_hw_desc, "%s 0x%04lx ", cur_cpu_spec->cpu_name, mfspr(SPRN_PVR));
-
 	/* Retrieve CPU related informations from the flat tree
 	 * (altivec support, boot CPU ID, ...)
 	 */
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 0ef3582853..fbb68fc28e 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -817,8 +817,8 @@ static void __init early_cmdline_parse(void)
 		opt += 4;
 		prom_memory_limit = prom_memparse(opt, (const char **)&opt);
 #ifdef CONFIG_PPC64
-		/* Align to 16 MB == size of ppc64 large page */
-		prom_memory_limit = ALIGN(prom_memory_limit, 0x1000000);
+		/* Align down to 16 MB which is large page size with hash page translation */
+		prom_memory_limit = ALIGN_DOWN(prom_memory_limit, SZ_16M);
 #endif
 	}
 
diff --git a/arch/powerpc/kernel/ptrace/ptrace-tm.c b/arch/powerpc/kernel/ptrace/ptrace-tm.c
index 210ea834e6..447bff87fd 100644
--- a/arch/powerpc/kernel/ptrace/ptrace-tm.c
+++ b/arch/powerpc/kernel/ptrace/ptrace-tm.c
@@ -12,7 +12,7 @@ void flush_tmregs_to_thread(struct task_struct *tsk)
 {
 	/*
 	 * If task is not current, it will have been flushed already to
-	 * it's thread_struct during __switch_to().
+	 * its thread_struct during __switch_to().
 	 *
 	 * A reclaim flushes ALL the state or if not in TM save TM SPRs
 	 * in the appropriate thread structures from live.
diff --git a/arch/powerpc/kernel/ptrace/ptrace-view.c b/arch/powerpc/kernel/ptrace/ptrace-view.c
index 584cf5c3df..c1819e0a66 100644
--- a/arch/powerpc/kernel/ptrace/ptrace-view.c
+++ b/arch/powerpc/kernel/ptrace/ptrace-view.c
@@ -469,12 +469,7 @@ static int dexcr_get(struct task_struct *target, const struct user_regset *regse
 	if (!cpu_has_feature(CPU_FTR_ARCH_31))
 		return -ENODEV;
 
-	/*
-	 * The DEXCR is currently static across all CPUs, so we don't
-	 * store the target's value anywhere, but the static value
-	 * will also be correct.
-	 */
-	membuf_store(&to, (u64)lower_32_bits(DEXCR_INIT));
+	membuf_store(&to, (u64)lower_32_bits(target->thread.dexcr));
 
 	/*
 	 * Technically the HDEXCR is per-cpu, but a hypervisor can't reasonably
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 01ed1263e1..4bd2f87616 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -405,7 +405,7 @@ static void __init cpu_init_thread_core_maps(int tpc)
 		cpumask_set_cpu(i, &threads_core_mask);
 
 	printk(KERN_INFO "CPU maps initialized for %d thread%s per core\n",
-	       tpc, tpc > 1 ? "s" : "");
+	       tpc, str_plural(tpc));
 	printk(KERN_DEBUG " (thread shift is %d)\n", threads_shift);
 }
 
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 12e53b3d79..46e6d2cd7a 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1567,7 +1567,7 @@ static void add_cpu_to_masks(int cpu)
 
 	/*
 	 * This CPU will not be in the online mask yet so we need to manually
-	 * add it to it's own thread sibling mask.
+	 * add it to its own thread sibling mask.
 	 */
 	map_cpu_to_node(cpu, cpu_to_node(cpu));
 	cpumask_set_cpu(cpu, cpu_sibling_mask(cpu));
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index 18c49fce49..ebae8415df 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -552,3 +552,4 @@
 459	common	lsm_get_self_attr		sys_lsm_get_self_attr
 460	common	lsm_set_self_attr		sys_lsm_set_self_attr
 461	common	lsm_list_modules		sys_lsm_list_modules
+462	common	mseal				sys_mseal
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 0f39a6b841..b842c83ab4 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -139,7 +139,7 @@ static unsigned long dscr_default;
  * @val:	Returned cpu specific DSCR default value
  *
  * This function returns the per cpu DSCR default value
- * for any cpu which is contained in it's PACA structure.
+ * for any cpu which is contained in its PACA structure.
  */
 static void read_dscr(void *val)
 {
@@ -152,7 +152,7 @@ static void read_dscr(void *val)
  * @val:	New cpu specific DSCR default value to update
  *
  * This function updates the per cpu DSCR default value
- * for any cpu which is contained in it's PACA structure.
+ * for any cpu which is contained in its PACA structure.
  */
 static void write_dscr(void *val)
 {
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index df20cf201f..c0fdc6d94f 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -354,6 +354,28 @@ void vtime_flush(struct task_struct *tsk)
 	acct->hardirq_time = 0;
 	acct->softirq_time = 0;
 }
+
+/*
+ * Called from the context switch with interrupts disabled, to charge all
+ * accumulated times to the current process, and to prepare accounting on
+ * the next process.
+ */
+void vtime_task_switch(struct task_struct *prev)
+{
+	if (is_idle_task(prev))
+		vtime_account_idle(prev);
+	else
+		vtime_account_kernel(prev);
+
+	vtime_flush(prev);
+
+	if (!IS_ENABLED(CONFIG_PPC64)) {
+		struct cpu_accounting_data *acct = get_accounting(current);
+		struct cpu_accounting_data *acct0 = get_accounting(prev);
+
+		acct->starttime = acct0->starttime;
+	}
+}
 #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
 
 void __no_kcsan __delay(unsigned long loops)
diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile
index 1b93655c28..1425b6edc6 100644
--- a/arch/powerpc/kernel/vdso/Makefile
+++ b/arch/powerpc/kernel/vdso/Makefile
@@ -47,12 +47,6 @@ obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
 targets += $(obj-vdso64) vdso64.so.dbg vgettimeofday-64.o
 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
 
-GCOV_PROFILE := n
-KCOV_INSTRUMENT := n
-UBSAN_SANITIZE := n
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 ccflags-y := -fno-common -fno-builtin
 ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack $(CLANG_FLAGS)
 ldflags-$(CONFIG_LD_IS_LLD) += $(call cc-option,--ld-path=$(LD),-fuse-ld=lld)
@@ -74,9 +68,9 @@ targets += vdso64.lds
 CPPFLAGS_vdso64.lds += -P -C
 
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o FORCE
+$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday-32.o FORCE
 	$(call if_changed,vdso32ld_and_check)
-$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE
+$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday-64.o FORCE
 	$(call if_changed,vdso64ld_and_check)
 
 # assembly rules for the .S files
@@ -90,10 +84,10 @@ $(obj)/vgettimeofday-64.o: %-64.o: %.c FORCE
 	$(call if_changed_dep,cc_o_c)
 
 # Generate VDSO offsets using helper script
-gen-vdso32sym := $(srctree)/$(src)/gen_vdso32_offsets.sh
+gen-vdso32sym := $(src)/gen_vdso32_offsets.sh
 quiet_cmd_vdso32sym = VDSO32SYM $@
       cmd_vdso32sym = $(NM) $< | $(gen-vdso32sym) | LC_ALL=C sort > $@
-gen-vdso64sym := $(srctree)/$(src)/gen_vdso64_offsets.sh
+gen-vdso64sym := $(src)/gen_vdso64_offsets.sh
 quiet_cmd_vdso64sym = VDSO64SYM $@
       cmd_vdso64sym = $(NM) $< | $(gen-vdso64sym) | LC_ALL=C sort > $@
 
@@ -114,5 +108,3 @@ quiet_cmd_vdso64ld_and_check = VDSO64L $@
       cmd_vdso64ld_and_check = $(VDSOCC) $(ldflags-y) $(LD64FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^); $(cmd_vdso_check)
 quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(VDSOCC) $(a_flags) $(AS64FLAGS) -c -o $@ $<
-
-OBJECT_FILES_NON_STANDARD := y
diff --git a/arch/powerpc/kexec/Makefile b/arch/powerpc/kexec/Makefile
index 8e469c4da3..470eb0453e 100644
--- a/arch/powerpc/kexec/Makefile
+++ b/arch/powerpc/kexec/Makefile
@@ -3,11 +3,11 @@
 # Makefile for the linux kernel.
 #
 
-obj-y				+= core.o core_$(BITS).o
+obj-y				+= core.o core_$(BITS).o ranges.o
 
 obj-$(CONFIG_PPC32)		+= relocate_32.o
 
-obj-$(CONFIG_KEXEC_FILE)	+= file_load.o ranges.o file_load_$(BITS).o elf_$(BITS).o
+obj-$(CONFIG_KEXEC_FILE)	+= file_load.o file_load_$(BITS).o elf_$(BITS).o
 obj-$(CONFIG_VMCORE_INFO)	+= vmcore_info.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash.o
 
diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 27254624f6..222aa326da 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -17,6 +17,7 @@
 #include <linux/cpu.h>
 #include <linux/hardirq.h>
 #include <linux/of.h>
+#include <linux/libfdt.h>
 
 #include <asm/page.h>
 #include <asm/current.h>
@@ -31,6 +32,7 @@
 #include <asm/hw_breakpoint.h>
 #include <asm/svm.h>
 #include <asm/ultravisor.h>
+#include <asm/crashdump-ppc64.h>
 
 int machine_kexec_prepare(struct kimage *image)
 {
@@ -430,3 +432,113 @@ static int __init export_htab_values(void)
 }
 late_initcall(export_htab_values);
 #endif /* CONFIG_PPC_64S_HASH_MMU */
+
+#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_DUMP)
+/**
+ * add_node_props - Reads node properties from device node structure and add
+ *                  them to fdt.
+ * @fdt:            Flattened device tree of the kernel
+ * @node_offset:    offset of the node to add a property at
+ * @dn:             device node pointer
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+static int add_node_props(void *fdt, int node_offset, const struct device_node *dn)
+{
+	int ret = 0;
+	struct property *pp;
+
+	if (!dn)
+		return -EINVAL;
+
+	for_each_property_of_node(dn, pp) {
+		ret = fdt_setprop(fdt, node_offset, pp->name, pp->value, pp->length);
+		if (ret < 0) {
+			pr_err("Unable to add %s property: %s\n", pp->name, fdt_strerror(ret));
+			return ret;
+		}
+	}
+	return ret;
+}
+
+/**
+ * update_cpus_node - Update cpus node of flattened device tree using of_root
+ *                    device node.
+ * @fdt:              Flattened device tree of the kernel.
+ *
+ * Returns 0 on success, negative errno on error.
+ *
+ * Note: expecting no subnodes under /cpus/<node> with device_type == "cpu".
+ * If this changes, update this function to include them.
+ */
+int update_cpus_node(void *fdt)
+{
+	int prev_node_offset;
+	const char *device_type;
+	const struct fdt_property *prop;
+	struct device_node *cpus_node, *dn;
+	int cpus_offset, cpus_subnode_offset, ret = 0;
+
+	cpus_offset = fdt_path_offset(fdt, "/cpus");
+	if (cpus_offset < 0 && cpus_offset != -FDT_ERR_NOTFOUND) {
+		pr_err("Malformed device tree: error reading /cpus node: %s\n",
+		       fdt_strerror(cpus_offset));
+		return cpus_offset;
+	}
+
+	prev_node_offset = cpus_offset;
+	/* Delete sub-nodes of /cpus node with device_type == "cpu" */
+	for (cpus_subnode_offset = fdt_first_subnode(fdt, cpus_offset); cpus_subnode_offset >= 0;) {
+		/* Ignore nodes that do not have a device_type property or device_type != "cpu" */
+		prop = fdt_get_property(fdt, cpus_subnode_offset, "device_type", NULL);
+		if (!prop || strcmp(prop->data, "cpu")) {
+			prev_node_offset = cpus_subnode_offset;
+			goto next_node;
+		}
+
+		ret = fdt_del_node(fdt, cpus_subnode_offset);
+		if (ret < 0) {
+			pr_err("Failed to delete a cpus sub-node: %s\n", fdt_strerror(ret));
+			return ret;
+		}
+next_node:
+		if (prev_node_offset == cpus_offset)
+			cpus_subnode_offset = fdt_first_subnode(fdt, cpus_offset);
+		else
+			cpus_subnode_offset = fdt_next_subnode(fdt, prev_node_offset);
+	}
+
+	cpus_node = of_find_node_by_path("/cpus");
+	/* Fail here to avoid kexec/kdump kernel boot hung */
+	if (!cpus_node) {
+		pr_err("No /cpus node found\n");
+		return -EINVAL;
+	}
+
+	/* Add all /cpus sub-nodes of device_type == "cpu" to FDT */
+	for_each_child_of_node(cpus_node, dn) {
+		/* Ignore device nodes that do not have a device_type property
+		 * or device_type != "cpu".
+		 */
+		device_type = of_get_property(dn, "device_type", NULL);
+		if (!device_type || strcmp(device_type, "cpu"))
+			continue;
+
+		cpus_subnode_offset = fdt_add_subnode(fdt, cpus_offset, dn->full_name);
+		if (cpus_subnode_offset < 0) {
+			pr_err("Unable to add %s subnode: %s\n", dn->full_name,
+			       fdt_strerror(cpus_subnode_offset));
+			ret = cpus_subnode_offset;
+			goto out;
+		}
+
+		ret = add_node_props(fdt, cpus_subnode_offset, dn);
+		if (ret < 0)
+			goto out;
+	}
+out:
+	of_node_put(cpus_node);
+	of_node_put(dn);
+	return ret;
+}
+#endif /* CONFIG_KEXEC_FILE || CONFIG_CRASH_DUMP */
diff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c
index ef5c2d25ec..9ac3266e49 100644
--- a/arch/powerpc/kexec/crash.c
+++ b/arch/powerpc/kexec/crash.c
@@ -16,6 +16,8 @@
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/types.h>
+#include <linux/libfdt.h>
+#include <linux/memory.h>
 
 #include <asm/processor.h>
 #include <asm/machdep.h>
@@ -24,6 +26,7 @@
 #include <asm/setjmp.h>
 #include <asm/debug.h>
 #include <asm/interrupt.h>
+#include <asm/kexec_ranges.h>
 
 /*
  * The primary CPU waits a while for all secondary CPUs to enter. This is to
@@ -392,3 +395,195 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	if (ppc_md.kexec_cpu_down)
 		ppc_md.kexec_cpu_down(1, 0);
 }
+
+#ifdef CONFIG_CRASH_HOTPLUG
+#undef pr_fmt
+#define pr_fmt(fmt) "crash hp: " fmt
+
+/*
+ * Advertise preferred elfcorehdr size to userspace via
+ * /sys/kernel/crash_elfcorehdr_size sysfs interface.
+ */
+unsigned int arch_crash_get_elfcorehdr_size(void)
+{
+	unsigned long phdr_cnt;
+
+	/* A program header for possible CPUs + vmcoreinfo */
+	phdr_cnt = num_possible_cpus() + 1;
+	if (IS_ENABLED(CONFIG_MEMORY_HOTPLUG))
+		phdr_cnt += CONFIG_CRASH_MAX_MEMORY_RANGES;
+
+	return sizeof(struct elfhdr) + (phdr_cnt * sizeof(Elf64_Phdr));
+}
+
+/**
+ * update_crash_elfcorehdr() - Recreate the elfcorehdr and replace it with old
+ *			       elfcorehdr in the kexec segment array.
+ * @image: the active struct kimage
+ * @mn: struct memory_notify data handler
+ */
+static void update_crash_elfcorehdr(struct kimage *image, struct memory_notify *mn)
+{
+	int ret;
+	struct crash_mem *cmem = NULL;
+	struct kexec_segment *ksegment;
+	void *ptr, *mem, *elfbuf = NULL;
+	unsigned long elfsz, memsz, base_addr, size;
+
+	ksegment = &image->segment[image->elfcorehdr_index];
+	mem = (void *) ksegment->mem;
+	memsz = ksegment->memsz;
+
+	ret = get_crash_memory_ranges(&cmem);
+	if (ret) {
+		pr_err("Failed to get crash mem range\n");
+		return;
+	}
+
+	/*
+	 * The hot unplugged memory is part of crash memory ranges,
+	 * remove it here.
+	 */
+	if (image->hp_action == KEXEC_CRASH_HP_REMOVE_MEMORY) {
+		base_addr = PFN_PHYS(mn->start_pfn);
+		size = mn->nr_pages * PAGE_SIZE;
+		ret = remove_mem_range(&cmem, base_addr, size);
+		if (ret) {
+			pr_err("Failed to remove hot-unplugged memory from crash memory ranges\n");
+			goto out;
+		}
+	}
+
+	ret = crash_prepare_elf64_headers(cmem, false, &elfbuf, &elfsz);
+	if (ret) {
+		pr_err("Failed to prepare elf header\n");
+		goto out;
+	}
+
+	/*
+	 * It is unlikely that kernel hit this because elfcorehdr kexec
+	 * segment (memsz) is built with addition space to accommodate growing
+	 * number of crash memory ranges while loading the kdump kernel. It is
+	 * Just to avoid any unforeseen case.
+	 */
+	if (elfsz > memsz) {
+		pr_err("Updated crash elfcorehdr elfsz %lu > memsz %lu", elfsz, memsz);
+		goto out;
+	}
+
+	ptr = __va(mem);
+	if (ptr) {
+		/* Temporarily invalidate the crash image while it is replaced */
+		xchg(&kexec_crash_image, NULL);
+
+		/* Replace the old elfcorehdr with newly prepared elfcorehdr */
+		memcpy((void *)ptr, elfbuf, elfsz);
+
+		/* The crash image is now valid once again */
+		xchg(&kexec_crash_image, image);
+	}
+out:
+	kvfree(cmem);
+	kvfree(elfbuf);
+}
+
+/**
+ * get_fdt_index - Loop through the kexec segment array and find
+ *		   the index of the FDT segment.
+ * @image: a pointer to kexec_crash_image
+ *
+ * Returns the index of FDT segment in the kexec segment array
+ * if found; otherwise -1.
+ */
+static int get_fdt_index(struct kimage *image)
+{
+	void *ptr;
+	unsigned long mem;
+	int i, fdt_index = -1;
+
+	/* Find the FDT segment index in kexec segment array. */
+	for (i = 0; i < image->nr_segments; i++) {
+		mem = image->segment[i].mem;
+		ptr = __va(mem);
+
+		if (ptr && fdt_magic(ptr) == FDT_MAGIC) {
+			fdt_index = i;
+			break;
+		}
+	}
+
+	return fdt_index;
+}
+
+/**
+ * update_crash_fdt - updates the cpus node of the crash FDT.
+ *
+ * @image: a pointer to kexec_crash_image
+ */
+static void update_crash_fdt(struct kimage *image)
+{
+	void *fdt;
+	int fdt_index;
+
+	fdt_index = get_fdt_index(image);
+	if (fdt_index < 0) {
+		pr_err("Unable to locate FDT segment.\n");
+		return;
+	}
+
+	fdt = __va((void *)image->segment[fdt_index].mem);
+
+	/* Temporarily invalidate the crash image while it is replaced */
+	xchg(&kexec_crash_image, NULL);
+
+	/* update FDT to reflect changes in CPU resources */
+	if (update_cpus_node(fdt))
+		pr_err("Failed to update crash FDT");
+
+	/* The crash image is now valid once again */
+	xchg(&kexec_crash_image, image);
+}
+
+int arch_crash_hotplug_support(struct kimage *image, unsigned long kexec_flags)
+{
+#ifdef CONFIG_KEXEC_FILE
+	if (image->file_mode)
+		return 1;
+#endif
+	return kexec_flags & KEXEC_CRASH_HOTPLUG_SUPPORT;
+}
+
+/**
+ * arch_crash_handle_hotplug_event - Handle crash CPU/Memory hotplug events to update the
+ *				     necessary kexec segments based on the hotplug event.
+ * @image: a pointer to kexec_crash_image
+ * @arg: struct memory_notify handler for memory hotplug case and NULL for CPU hotplug case.
+ *
+ * Update the kdump image based on the type of hotplug event, represented by image->hp_action.
+ * CPU add: Update the FDT segment to include the newly added CPU.
+ * CPU remove: No action is needed, with the assumption that it's okay to have offline CPUs
+ *	       part of the FDT.
+ * Memory add/remove: No action is taken as this is not yet supported.
+ */
+void arch_crash_handle_hotplug_event(struct kimage *image, void *arg)
+{
+	struct memory_notify *mn;
+
+	switch (image->hp_action) {
+	case KEXEC_CRASH_HP_REMOVE_CPU:
+		return;
+
+	case KEXEC_CRASH_HP_ADD_CPU:
+		update_crash_fdt(image);
+		break;
+
+	case KEXEC_CRASH_HP_REMOVE_MEMORY:
+	case KEXEC_CRASH_HP_ADD_MEMORY:
+		mn = (struct memory_notify *)arg;
+		update_crash_elfcorehdr(image, mn);
+		return;
+	default:
+		pr_warn_once("Unknown hotplug action\n");
+	}
+}
+#endif /* CONFIG_CRASH_HOTPLUG */
diff --git a/arch/powerpc/kexec/elf_64.c b/arch/powerpc/kexec/elf_64.c
index 6d8951e8e9..214c071c58 100644
--- a/arch/powerpc/kexec/elf_64.c
+++ b/arch/powerpc/kexec/elf_64.c
@@ -116,7 +116,8 @@ static void *elf64_load(struct kimage *image, char *kernel_buf,
 	if (ret)
 		goto out_free_fdt;
 
-	fdt_pack(fdt);
+	if (!IS_ENABLED(CONFIG_CRASH_HOTPLUG) || image->type != KEXEC_TYPE_CRASH)
+		fdt_pack(fdt);
 
 	kbuf.buffer = fdt;
 	kbuf.bufsz = kbuf.memsz = fdt_totalsize(fdt);
diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c
index 1bc65de617..925a69ad24 100644
--- a/arch/powerpc/kexec/file_load_64.c
+++ b/arch/powerpc/kexec/file_load_64.c
@@ -30,6 +30,7 @@
 #include <asm/iommu.h>
 #include <asm/prom.h>
 #include <asm/plpks.h>
+#include <asm/cputhreads.h>
 
 struct umem_info {
 	__be64 *buf;		/* data buffer for usable-memory property */
@@ -48,83 +49,6 @@ const struct kexec_file_ops * const kexec_file_loaders[] = {
 };
 
 /**
- * get_exclude_memory_ranges - Get exclude memory ranges. This list includes
- *                             regions like opal/rtas, tce-table, initrd,
- *                             kernel, htab which should be avoided while
- *                             setting up kexec load segments.
- * @mem_ranges:                Range list to add the memory ranges to.
- *
- * Returns 0 on success, negative errno on error.
- */
-static int get_exclude_memory_ranges(struct crash_mem **mem_ranges)
-{
-	int ret;
-
-	ret = add_tce_mem_ranges(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_initrd_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_htab_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_kernel_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_rtas_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_opal_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_reserved_mem_ranges(mem_ranges);
-	if (ret)
-		goto out;
-
-	/* exclude memory ranges should be sorted for easy lookup */
-	sort_memory_ranges(*mem_ranges, true);
-out:
-	if (ret)
-		pr_err("Failed to setup exclude memory ranges\n");
-	return ret;
-}
-
-/**
- * get_reserved_memory_ranges - Get reserve memory ranges. This list includes
- *                              memory regions that should be added to the
- *                              memory reserve map to ensure the region is
- *                              protected from any mischief.
- * @mem_ranges:                 Range list to add the memory ranges to.
- *
- * Returns 0 on success, negative errno on error.
- */
-static int get_reserved_memory_ranges(struct crash_mem **mem_ranges)
-{
-	int ret;
-
-	ret = add_rtas_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_tce_mem_ranges(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_reserved_mem_ranges(mem_ranges);
-out:
-	if (ret)
-		pr_err("Failed to setup reserved memory ranges\n");
-	return ret;
-}
-
-/**
  * __locate_mem_hole_top_down - Looks top down for a large enough memory hole
  *                              in the memory regions between buf_min & buf_max
  *                              for the buffer. If found, sets kbuf->mem.
@@ -323,119 +247,6 @@ static int locate_mem_hole_bottom_up_ppc64(struct kexec_buf *kbuf,
 
 #ifdef CONFIG_CRASH_DUMP
 /**
- * get_usable_memory_ranges - Get usable memory ranges. This list includes
- *                            regions like crashkernel, opal/rtas & tce-table,
- *                            that kdump kernel could use.
- * @mem_ranges:               Range list to add the memory ranges to.
- *
- * Returns 0 on success, negative errno on error.
- */
-static int get_usable_memory_ranges(struct crash_mem **mem_ranges)
-{
-	int ret;
-
-	/*
-	 * Early boot failure observed on guests when low memory (first memory
-	 * block?) is not added to usable memory. So, add [0, crashk_res.end]
-	 * instead of [crashk_res.start, crashk_res.end] to workaround it.
-	 * Also, crashed kernel's memory must be added to reserve map to
-	 * avoid kdump kernel from using it.
-	 */
-	ret = add_mem_range(mem_ranges, 0, crashk_res.end + 1);
-	if (ret)
-		goto out;
-
-	ret = add_rtas_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_opal_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_tce_mem_ranges(mem_ranges);
-out:
-	if (ret)
-		pr_err("Failed to setup usable memory ranges\n");
-	return ret;
-}
-
-/**
- * get_crash_memory_ranges - Get crash memory ranges. This list includes
- *                           first/crashing kernel's memory regions that
- *                           would be exported via an elfcore.
- * @mem_ranges:              Range list to add the memory ranges to.
- *
- * Returns 0 on success, negative errno on error.
- */
-static int get_crash_memory_ranges(struct crash_mem **mem_ranges)
-{
-	phys_addr_t base, end;
-	struct crash_mem *tmem;
-	u64 i;
-	int ret;
-
-	for_each_mem_range(i, &base, &end) {
-		u64 size = end - base;
-
-		/* Skip backup memory region, which needs a separate entry */
-		if (base == BACKUP_SRC_START) {
-			if (size > BACKUP_SRC_SIZE) {
-				base = BACKUP_SRC_END + 1;
-				size -= BACKUP_SRC_SIZE;
-			} else
-				continue;
-		}
-
-		ret = add_mem_range(mem_ranges, base, size);
-		if (ret)
-			goto out;
-
-		/* Try merging adjacent ranges before reallocation attempt */
-		if ((*mem_ranges)->nr_ranges == (*mem_ranges)->max_nr_ranges)
-			sort_memory_ranges(*mem_ranges, true);
-	}
-
-	/* Reallocate memory ranges if there is no space to split ranges */
-	tmem = *mem_ranges;
-	if (tmem && (tmem->nr_ranges == tmem->max_nr_ranges)) {
-		tmem = realloc_mem_ranges(mem_ranges);
-		if (!tmem)
-			goto out;
-	}
-
-	/* Exclude crashkernel region */
-	ret = crash_exclude_mem_range(tmem, crashk_res.start, crashk_res.end);
-	if (ret)
-		goto out;
-
-	/*
-	 * FIXME: For now, stay in parity with kexec-tools but if RTAS/OPAL
-	 *        regions are exported to save their context at the time of
-	 *        crash, they should actually be backed up just like the
-	 *        first 64K bytes of memory.
-	 */
-	ret = add_rtas_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	ret = add_opal_mem_range(mem_ranges);
-	if (ret)
-		goto out;
-
-	/* create a separate program header for the backup region */
-	ret = add_mem_range(mem_ranges, BACKUP_SRC_START, BACKUP_SRC_SIZE);
-	if (ret)
-		goto out;
-
-	sort_memory_ranges(*mem_ranges, false);
-out:
-	if (ret)
-		pr_err("Failed to setup crash memory ranges\n");
-	return ret;
-}
-
-/**
  * check_realloc_usable_mem - Reallocate buffer if it can't accommodate entries
  * @um_info:                  Usable memory buffer and ranges info.
  * @cnt:                      No. of entries to accommodate.
@@ -784,6 +595,23 @@ static void update_backup_region_phdr(struct kimage *image, Elf64_Ehdr *ehdr)
 	}
 }
 
+static unsigned int kdump_extra_elfcorehdr_size(struct crash_mem *cmem)
+{
+#if defined(CONFIG_CRASH_HOTPLUG) && defined(CONFIG_MEMORY_HOTPLUG)
+	unsigned int extra_sz = 0;
+
+	if (CONFIG_CRASH_MAX_MEMORY_RANGES > (unsigned int)PN_XNUM)
+		pr_warn("Number of Phdrs %u exceeds max\n", CONFIG_CRASH_MAX_MEMORY_RANGES);
+	else if (cmem->nr_ranges >= CONFIG_CRASH_MAX_MEMORY_RANGES)
+		pr_warn("Configured crash mem ranges may not be enough\n");
+	else
+		extra_sz = (CONFIG_CRASH_MAX_MEMORY_RANGES - cmem->nr_ranges) * sizeof(Elf64_Phdr);
+
+	return extra_sz;
+#endif
+	return 0;
+}
+
 /**
  * load_elfcorehdr_segment - Setup crash memory ranges and initialize elfcorehdr
  *                           segment needed to load kdump kernel.
@@ -815,7 +643,8 @@ static int load_elfcorehdr_segment(struct kimage *image, struct kexec_buf *kbuf)
 
 	kbuf->buffer = headers;
 	kbuf->mem = KEXEC_BUF_MEM_UNKNOWN;
-	kbuf->bufsz = kbuf->memsz = headers_sz;
+	kbuf->bufsz = headers_sz;
+	kbuf->memsz = headers_sz + kdump_extra_elfcorehdr_size(cmem);
 	kbuf->top_down = false;
 
 	ret = kexec_add_buffer(kbuf);
@@ -979,6 +808,9 @@ static unsigned int kdump_extra_fdt_size_ppc64(struct kimage *image)
 	unsigned int cpu_nodes, extra_size = 0;
 	struct device_node *dn;
 	u64 usm_entries;
+#ifdef CONFIG_CRASH_HOTPLUG
+	unsigned int possible_cpu_nodes;
+#endif
 
 	if (!IS_ENABLED(CONFIG_CRASH_DUMP) || image->type != KEXEC_TYPE_CRASH)
 		return 0;
@@ -1006,6 +838,19 @@ static unsigned int kdump_extra_fdt_size_ppc64(struct kimage *image)
 	if (cpu_nodes > boot_cpu_node_count)
 		extra_size += (cpu_nodes - boot_cpu_node_count) * cpu_node_size();
 
+#ifdef CONFIG_CRASH_HOTPLUG
+	/*
+	 * Make sure enough space is reserved to accommodate possible CPU nodes
+	 * in the crash FDT. This allows packing possible CPU nodes which are
+	 * not yet present in the system without regenerating the entire FDT.
+	 */
+	if (image->type == KEXEC_TYPE_CRASH) {
+		possible_cpu_nodes = num_possible_cpus() / threads_per_core;
+		if (possible_cpu_nodes > cpu_nodes)
+			extra_size += (possible_cpu_nodes - cpu_nodes) * cpu_node_size();
+	}
+#endif
+
 	return extra_size;
 }
 
@@ -1028,93 +873,6 @@ unsigned int kexec_extra_fdt_size_ppc64(struct kimage *image)
 	return extra_size + kdump_extra_fdt_size_ppc64(image);
 }
 
-/**
- * add_node_props - Reads node properties from device node structure and add
- *                  them to fdt.
- * @fdt:            Flattened device tree of the kernel
- * @node_offset:    offset of the node to add a property at
- * @dn:             device node pointer
- *
- * Returns 0 on success, negative errno on error.
- */
-static int add_node_props(void *fdt, int node_offset, const struct device_node *dn)
-{
-	int ret = 0;
-	struct property *pp;
-
-	if (!dn)
-		return -EINVAL;
-
-	for_each_property_of_node(dn, pp) {
-		ret = fdt_setprop(fdt, node_offset, pp->name, pp->value, pp->length);
-		if (ret < 0) {
-			pr_err("Unable to add %s property: %s\n", pp->name, fdt_strerror(ret));
-			return ret;
-		}
-	}
-	return ret;
-}
-
-/**
- * update_cpus_node - Update cpus node of flattened device tree using of_root
- *                    device node.
- * @fdt:              Flattened device tree of the kernel.
- *
- * Returns 0 on success, negative errno on error.
- */
-static int update_cpus_node(void *fdt)
-{
-	struct device_node *cpus_node, *dn;
-	int cpus_offset, cpus_subnode_offset, ret = 0;
-
-	cpus_offset = fdt_path_offset(fdt, "/cpus");
-	if (cpus_offset < 0 && cpus_offset != -FDT_ERR_NOTFOUND) {
-		pr_err("Malformed device tree: error reading /cpus node: %s\n",
-		       fdt_strerror(cpus_offset));
-		return cpus_offset;
-	}
-
-	if (cpus_offset > 0) {
-		ret = fdt_del_node(fdt, cpus_offset);
-		if (ret < 0) {
-			pr_err("Error deleting /cpus node: %s\n", fdt_strerror(ret));
-			return -EINVAL;
-		}
-	}
-
-	/* Add cpus node to fdt */
-	cpus_offset = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), "cpus");
-	if (cpus_offset < 0) {
-		pr_err("Error creating /cpus node: %s\n", fdt_strerror(cpus_offset));
-		return -EINVAL;
-	}
-
-	/* Add cpus node properties */
-	cpus_node = of_find_node_by_path("/cpus");
-	ret = add_node_props(fdt, cpus_offset, cpus_node);
-	of_node_put(cpus_node);
-	if (ret < 0)
-		return ret;
-
-	/* Loop through all subnodes of cpus and add them to fdt */
-	for_each_node_by_type(dn, "cpu") {
-		cpus_subnode_offset = fdt_add_subnode(fdt, cpus_offset, dn->full_name);
-		if (cpus_subnode_offset < 0) {
-			pr_err("Unable to add %s subnode: %s\n", dn->full_name,
-			       fdt_strerror(cpus_subnode_offset));
-			ret = cpus_subnode_offset;
-			goto out;
-		}
-
-		ret = add_node_props(fdt, cpus_subnode_offset, dn);
-		if (ret < 0)
-			goto out;
-	}
-out:
-	of_node_put(dn);
-	return ret;
-}
-
 static int copy_property(void *fdt, int node_offset, const struct device_node *dn,
 			 const char *propname)
 {
diff --git a/arch/powerpc/kexec/ranges.c b/arch/powerpc/kexec/ranges.c
index 33b780049a..3702b0bdab 100644
--- a/arch/powerpc/kexec/ranges.c
+++ b/arch/powerpc/kexec/ranges.c
@@ -20,9 +20,13 @@
 #include <linux/kexec.h>
 #include <linux/of.h>
 #include <linux/slab.h>
+#include <linux/memblock.h>
+#include <linux/crash_core.h>
 #include <asm/sections.h>
 #include <asm/kexec_ranges.h>
+#include <asm/crashdump-ppc64.h>
 
+#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_DUMP)
 /**
  * get_max_nr_ranges - Get the max no. of ranges crash_mem structure
  *                     could hold, given the size allocated for it.
@@ -234,13 +238,16 @@ int add_mem_range(struct crash_mem **mem_ranges, u64 base, u64 size)
 	return __add_mem_range(mem_ranges, base, size);
 }
 
+#endif /* CONFIG_KEXEC_FILE || CONFIG_CRASH_DUMP */
+
+#ifdef CONFIG_KEXEC_FILE
 /**
  * add_tce_mem_ranges - Adds tce-table range to the given memory ranges list.
  * @mem_ranges:         Range list to add the memory range(s) to.
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_tce_mem_ranges(struct crash_mem **mem_ranges)
+static int add_tce_mem_ranges(struct crash_mem **mem_ranges)
 {
 	struct device_node *dn = NULL;
 	int ret = 0;
@@ -279,7 +286,7 @@ int add_tce_mem_ranges(struct crash_mem **mem_ranges)
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_initrd_mem_range(struct crash_mem **mem_ranges)
+static int add_initrd_mem_range(struct crash_mem **mem_ranges)
 {
 	u64 base, end;
 	int ret;
@@ -296,7 +303,6 @@ int add_initrd_mem_range(struct crash_mem **mem_ranges)
 	return ret;
 }
 
-#ifdef CONFIG_PPC_64S_HASH_MMU
 /**
  * add_htab_mem_range - Adds htab range to the given memory ranges list,
  *                      if it exists
@@ -304,14 +310,18 @@ int add_initrd_mem_range(struct crash_mem **mem_ranges)
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_htab_mem_range(struct crash_mem **mem_ranges)
+static int add_htab_mem_range(struct crash_mem **mem_ranges)
 {
+
+#ifdef CONFIG_PPC_64S_HASH_MMU
 	if (!htab_address)
 		return 0;
 
 	return add_mem_range(mem_ranges, __pa(htab_address), htab_size_bytes);
-}
+#else
+	return 0;
 #endif
+}
 
 /**
  * add_kernel_mem_range - Adds kernel text region to the given
@@ -320,18 +330,20 @@ int add_htab_mem_range(struct crash_mem **mem_ranges)
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_kernel_mem_range(struct crash_mem **mem_ranges)
+static int add_kernel_mem_range(struct crash_mem **mem_ranges)
 {
 	return add_mem_range(mem_ranges, 0, __pa(_end));
 }
+#endif /* CONFIG_KEXEC_FILE */
 
+#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_DUMP)
 /**
  * add_rtas_mem_range - Adds RTAS region to the given memory ranges list.
  * @mem_ranges:         Range list to add the memory range to.
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_rtas_mem_range(struct crash_mem **mem_ranges)
+static int add_rtas_mem_range(struct crash_mem **mem_ranges)
 {
 	struct device_node *dn;
 	u32 base, size;
@@ -356,7 +368,7 @@ int add_rtas_mem_range(struct crash_mem **mem_ranges)
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_opal_mem_range(struct crash_mem **mem_ranges)
+static int add_opal_mem_range(struct crash_mem **mem_ranges)
 {
 	struct device_node *dn;
 	u64 base, size;
@@ -374,7 +386,9 @@ int add_opal_mem_range(struct crash_mem **mem_ranges)
 	of_node_put(dn);
 	return ret;
 }
+#endif /* CONFIG_KEXEC_FILE || CONFIG_CRASH_DUMP */
 
+#ifdef CONFIG_KEXEC_FILE
 /**
  * add_reserved_mem_ranges - Adds "/reserved-ranges" regions exported by f/w
  *                           to the given memory ranges list.
@@ -382,7 +396,7 @@ int add_opal_mem_range(struct crash_mem **mem_ranges)
  *
  * Returns 0 on success, negative errno on error.
  */
-int add_reserved_mem_ranges(struct crash_mem **mem_ranges)
+static int add_reserved_mem_ranges(struct crash_mem **mem_ranges)
 {
 	int n_mem_addr_cells, n_mem_size_cells, i, len, cells, ret = 0;
 	struct device_node *root = of_find_node_by_path("/");
@@ -412,3 +426,283 @@ int add_reserved_mem_ranges(struct crash_mem **mem_ranges)
 
 	return ret;
 }
+
+/**
+ * get_reserved_memory_ranges - Get reserve memory ranges. This list includes
+ *                              memory regions that should be added to the
+ *                              memory reserve map to ensure the region is
+ *                              protected from any mischief.
+ * @mem_ranges:                 Range list to add the memory ranges to.
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+int get_reserved_memory_ranges(struct crash_mem **mem_ranges)
+{
+	int ret;
+
+	ret = add_rtas_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_tce_mem_ranges(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_reserved_mem_ranges(mem_ranges);
+out:
+	if (ret)
+		pr_err("Failed to setup reserved memory ranges\n");
+	return ret;
+}
+
+/**
+ * get_exclude_memory_ranges - Get exclude memory ranges. This list includes
+ *                             regions like opal/rtas, tce-table, initrd,
+ *                             kernel, htab which should be avoided while
+ *                             setting up kexec load segments.
+ * @mem_ranges:                Range list to add the memory ranges to.
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+int get_exclude_memory_ranges(struct crash_mem **mem_ranges)
+{
+	int ret;
+
+	ret = add_tce_mem_ranges(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_initrd_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_htab_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_kernel_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_rtas_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_opal_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_reserved_mem_ranges(mem_ranges);
+	if (ret)
+		goto out;
+
+	/* exclude memory ranges should be sorted for easy lookup */
+	sort_memory_ranges(*mem_ranges, true);
+out:
+	if (ret)
+		pr_err("Failed to setup exclude memory ranges\n");
+	return ret;
+}
+
+#ifdef CONFIG_CRASH_DUMP
+/**
+ * get_usable_memory_ranges - Get usable memory ranges. This list includes
+ *                            regions like crashkernel, opal/rtas & tce-table,
+ *                            that kdump kernel could use.
+ * @mem_ranges:               Range list to add the memory ranges to.
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+int get_usable_memory_ranges(struct crash_mem **mem_ranges)
+{
+	int ret;
+
+	/*
+	 * Early boot failure observed on guests when low memory (first memory
+	 * block?) is not added to usable memory. So, add [0, crashk_res.end]
+	 * instead of [crashk_res.start, crashk_res.end] to workaround it.
+	 * Also, crashed kernel's memory must be added to reserve map to
+	 * avoid kdump kernel from using it.
+	 */
+	ret = add_mem_range(mem_ranges, 0, crashk_res.end + 1);
+	if (ret)
+		goto out;
+
+	ret = add_rtas_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_opal_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_tce_mem_ranges(mem_ranges);
+out:
+	if (ret)
+		pr_err("Failed to setup usable memory ranges\n");
+	return ret;
+}
+#endif /* CONFIG_CRASH_DUMP */
+#endif /* CONFIG_KEXEC_FILE */
+
+#ifdef CONFIG_CRASH_DUMP
+/**
+ * get_crash_memory_ranges - Get crash memory ranges. This list includes
+ *                           first/crashing kernel's memory regions that
+ *                           would be exported via an elfcore.
+ * @mem_ranges:              Range list to add the memory ranges to.
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+int get_crash_memory_ranges(struct crash_mem **mem_ranges)
+{
+	phys_addr_t base, end;
+	struct crash_mem *tmem;
+	u64 i;
+	int ret;
+
+	for_each_mem_range(i, &base, &end) {
+		u64 size = end - base;
+
+		/* Skip backup memory region, which needs a separate entry */
+		if (base == BACKUP_SRC_START) {
+			if (size > BACKUP_SRC_SIZE) {
+				base = BACKUP_SRC_END + 1;
+				size -= BACKUP_SRC_SIZE;
+			} else
+				continue;
+		}
+
+		ret = add_mem_range(mem_ranges, base, size);
+		if (ret)
+			goto out;
+
+		/* Try merging adjacent ranges before reallocation attempt */
+		if ((*mem_ranges)->nr_ranges == (*mem_ranges)->max_nr_ranges)
+			sort_memory_ranges(*mem_ranges, true);
+	}
+
+	/* Reallocate memory ranges if there is no space to split ranges */
+	tmem = *mem_ranges;
+	if (tmem && (tmem->nr_ranges == tmem->max_nr_ranges)) {
+		tmem = realloc_mem_ranges(mem_ranges);
+		if (!tmem)
+			goto out;
+	}
+
+	/* Exclude crashkernel region */
+	ret = crash_exclude_mem_range(tmem, crashk_res.start, crashk_res.end);
+	if (ret)
+		goto out;
+
+	/*
+	 * FIXME: For now, stay in parity with kexec-tools but if RTAS/OPAL
+	 *        regions are exported to save their context at the time of
+	 *        crash, they should actually be backed up just like the
+	 *        first 64K bytes of memory.
+	 */
+	ret = add_rtas_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	ret = add_opal_mem_range(mem_ranges);
+	if (ret)
+		goto out;
+
+	/* create a separate program header for the backup region */
+	ret = add_mem_range(mem_ranges, BACKUP_SRC_START, BACKUP_SRC_SIZE);
+	if (ret)
+		goto out;
+
+	sort_memory_ranges(*mem_ranges, false);
+out:
+	if (ret)
+		pr_err("Failed to setup crash memory ranges\n");
+	return ret;
+}
+
+/**
+ * remove_mem_range - Removes the given memory range from the range list.
+ * @mem_ranges:    Range list to remove the memory range to.
+ * @base:          Base address of the range to remove.
+ * @size:          Size of the memory range to remove.
+ *
+ * (Re)allocates memory, if needed.
+ *
+ * Returns 0 on success, negative errno on error.
+ */
+int remove_mem_range(struct crash_mem **mem_ranges, u64 base, u64 size)
+{
+	u64 end;
+	int ret = 0;
+	unsigned int i;
+	u64 mstart, mend;
+	struct crash_mem *mem_rngs = *mem_ranges;
+
+	if (!size)
+		return 0;
+
+	/*
+	 * Memory range are stored as start and end address, use
+	 * the same format to do remove operation.
+	 */
+	end = base + size - 1;
+
+	for (i = 0; i < mem_rngs->nr_ranges; i++) {
+		mstart = mem_rngs->ranges[i].start;
+		mend = mem_rngs->ranges[i].end;
+
+		/*
+		 * Memory range to remove is not part of this range entry
+		 * in the memory range list
+		 */
+		if (!(base >= mstart && end <= mend))
+			continue;
+
+		/*
+		 * Memory range to remove is equivalent to this entry in the
+		 * memory range list. Remove the range entry from the list.
+		 */
+		if (base == mstart && end == mend) {
+			for (; i < mem_rngs->nr_ranges - 1; i++) {
+				mem_rngs->ranges[i].start = mem_rngs->ranges[i+1].start;
+				mem_rngs->ranges[i].end = mem_rngs->ranges[i+1].end;
+			}
+			mem_rngs->nr_ranges--;
+			goto out;
+		}
+		/*
+		 * Start address of the memory range to remove and the
+		 * current memory range entry in the list is same. Just
+		 * move the start address of the current memory range
+		 * entry in the list to end + 1.
+		 */
+		else if (base == mstart) {
+			mem_rngs->ranges[i].start = end + 1;
+			goto out;
+		}
+		/*
+		 * End address of the memory range to remove and the
+		 * current memory range entry in the list is same.
+		 * Just move the end address of the current memory
+		 * range entry in the list to base - 1.
+		 */
+		else if (end == mend)  {
+			mem_rngs->ranges[i].end = base - 1;
+			goto out;
+		}
+		/*
+		 * Memory range to remove is not at the edge of current
+		 * memory range entry. Split the current memory entry into
+		 * two half.
+		 */
+		else {
+			mem_rngs->ranges[i].end = base - 1;
+			size = mem_rngs->ranges[i].end - end;
+			ret = add_mem_range(mem_ranges, end + 1, size);
+		}
+	}
+out:
+	return ret;
+}
+#endif /* CONFIG_CRASH_DUMP */
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 8acec14412..ff6c383739 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -360,10 +360,6 @@ static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
 		break;
 	}
 
-#if 0
-	printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
-#endif
-
 	if (deliver)
 		kvmppc_inject_interrupt(vcpu, vec, 0);
 
@@ -899,11 +895,6 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 	return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
 }
 
-bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
-{
-	return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
-}
-
 int kvmppc_core_init_vm(struct kvm *kvm)
 {
 
diff --git a/arch/powerpc/kvm/book3s.h b/arch/powerpc/kvm/book3s.h
index 58391b4b32..4aa2ab89af 100644
--- a/arch/powerpc/kvm/book3s.h
+++ b/arch/powerpc/kvm/book3s.h
@@ -12,7 +12,6 @@ extern void kvmppc_core_flush_memslot_hv(struct kvm *kvm,
 extern bool kvm_unmap_gfn_range_hv(struct kvm *kvm, struct kvm_gfn_range *range);
 extern bool kvm_age_gfn_hv(struct kvm *kvm, struct kvm_gfn_range *range);
 extern bool kvm_test_age_gfn_hv(struct kvm *kvm, struct kvm_gfn_range *range);
-extern bool kvm_set_spte_gfn_hv(struct kvm *kvm, struct kvm_gfn_range *range);
 
 extern int kvmppc_mmu_init_pr(struct kvm_vcpu *vcpu);
 extern void kvmppc_mmu_destroy_pr(struct kvm_vcpu *vcpu);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 2b1f0cdd8c..1b51b1c471 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -1010,18 +1010,6 @@ bool kvm_test_age_gfn_hv(struct kvm *kvm, struct kvm_gfn_range *range)
 		return kvm_test_age_rmapp(kvm, range->slot, range->start);
 }
 
-bool kvm_set_spte_gfn_hv(struct kvm *kvm, struct kvm_gfn_range *range)
-{
-	WARN_ON(range->start + 1 != range->end);
-
-	if (kvm_is_radix(kvm))
-		kvm_unmap_radix(kvm, range->slot, range->start);
-	else
-		kvm_unmap_rmapp(kvm, range->slot, range->start);
-
-	return false;
-}
-
 static int vcpus_running(struct kvm *kvm)
 {
 	return atomic_read(&kvm->arch.vcpus_running) != 0;
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 5bbfb2eed1..de126d1533 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -714,7 +714,7 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
 	case SPRN_HID1:
 		to_book3s(vcpu)->hid[1] = spr_val;
 		break;
-	case SPRN_HID2:
+	case SPRN_HID2_750FX:
 		to_book3s(vcpu)->hid[2] = spr_val;
 		break;
 	case SPRN_HID2_GEKKO:
@@ -900,7 +900,7 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
 	case SPRN_HID1:
 		*spr_val = to_book3s(vcpu)->hid[1];
 		break;
-	case SPRN_HID2:
+	case SPRN_HID2_750FX:
 	case SPRN_HID2_GEKKO:
 		*spr_val = to_book3s(vcpu)->hid[2];
 		break;
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 692a7c6f5f..d8352e4d9c 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -2305,7 +2305,7 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
 		*val = get_reg_val(id, kvmppc_get_siar_hv(vcpu));
 		break;
 	case KVM_REG_PPC_SDAR:
-		*val = get_reg_val(id, kvmppc_get_siar_hv(vcpu));
+		*val = get_reg_val(id, kvmppc_get_sdar_hv(vcpu));
 		break;
 	case KVM_REG_PPC_SIER:
 		*val = get_reg_val(id, kvmppc_get_sier_hv(vcpu, 0));
@@ -2540,7 +2540,7 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
 		vcpu->arch.mmcrs = set_reg_val(id, *val);
 		break;
 	case KVM_REG_PPC_MMCR3:
-		*val = get_reg_val(id, vcpu->arch.mmcr[3]);
+		kvmppc_set_mmcr_hv(vcpu, 3, set_reg_val(id, *val));
 		break;
 	case KVM_REG_PPC_PMC1 ... KVM_REG_PPC_PMC8:
 		i = id - KVM_REG_PPC_PMC1;
@@ -4116,6 +4116,11 @@ static int kvmhv_vcpu_entry_nestedv2(struct kvm_vcpu *vcpu, u64 time_limit,
 	int trap;
 	long rc;
 
+	if (vcpu->arch.doorbell_request) {
+		vcpu->arch.doorbell_request = 0;
+		kvmppc_set_dpdes(vcpu, 1);
+	}
+
 	io = &vcpu->arch.nestedv2_io;
 
 	msr = mfmsr();
@@ -6364,7 +6369,6 @@ static struct kvmppc_ops kvm_ops_hv = {
 	.unmap_gfn_range = kvm_unmap_gfn_range_hv,
 	.age_gfn = kvm_age_gfn_hv,
 	.test_age_gfn = kvm_test_age_gfn_hv,
-	.set_spte_gfn = kvm_set_spte_gfn_hv,
 	.free_memslot = kvmppc_core_free_memslot_hv,
 	.init_vm =  kvmppc_core_init_vm_hv,
 	.destroy_vm = kvmppc_core_destroy_vm_hv,
diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c
index 1091f7a83b..342f583147 100644
--- a/arch/powerpc/kvm/book3s_hv_nestedv2.c
+++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c
@@ -311,6 +311,10 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb,
 			rc = kvmppc_gse_put_u64(gsb, iden,
 						vcpu->arch.vcore->vtb);
 			break;
+		case KVMPPC_GSID_DPDES:
+			rc = kvmppc_gse_put_u64(gsb, iden,
+						vcpu->arch.vcore->dpdes);
+			break;
 		case KVMPPC_GSID_LPCR:
 			rc = kvmppc_gse_put_u64(gsb, iden,
 						vcpu->arch.vcore->lpcr);
@@ -543,6 +547,9 @@ static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm,
 		case KVMPPC_GSID_VTB:
 			vcpu->arch.vcore->vtb = kvmppc_gse_get_u64(gse);
 			break;
+		case KVMPPC_GSID_DPDES:
+			vcpu->arch.vcore->dpdes = kvmppc_gse_get_u64(gse);
+			break;
 		case KVMPPC_GSID_LPCR:
 			vcpu->arch.vcore->lpcr = kvmppc_gse_get_u64(gse);
 			break;
diff --git a/arch/powerpc/kvm/book3s_hv_rm_xics.c b/arch/powerpc/kvm/book3s_hv_rm_xics.c
index e429848785..f2636414d8 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_xics.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_xics.c
@@ -837,7 +837,7 @@ static inline void this_cpu_inc_rm(unsigned int __percpu *addr)
  */
 static void kvmppc_rm_handle_irq_desc(struct irq_desc *desc)
 {
-	this_cpu_inc_rm(desc->kstat_irqs);
+	this_cpu_inc_rm(&desc->kstat_irqs->cnt);
 	__this_cpu_inc(kstat.irqs_sum);
 }
 
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 5b92619a05..a7d7137ea0 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -461,12 +461,6 @@ static bool kvm_test_age_gfn_pr(struct kvm *kvm, struct kvm_gfn_range *range)
 	return false;
 }
 
-static bool kvm_set_spte_gfn_pr(struct kvm *kvm, struct kvm_gfn_range *range)
-{
-	/* The page will get remapped properly on its next fault */
-	return do_kvm_unmap_gfn(kvm, range);
-}
-
 /*****************************************/
 
 static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr)
@@ -2071,7 +2065,6 @@ static struct kvmppc_ops kvm_ops_pr = {
 	.unmap_gfn_range = kvm_unmap_gfn_range_pr,
 	.age_gfn  = kvm_age_gfn_pr,
 	.test_age_gfn = kvm_test_age_gfn_pr,
-	.set_spte_gfn = kvm_set_spte_gfn_pr,
 	.free_memslot = kvmppc_core_free_memslot_pr,
 	.init_vm = kvmppc_core_init_vm_pr,
 	.destroy_vm = kvmppc_core_destroy_vm_pr,
diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
index 29a3822497..1362c67238 100644
--- a/arch/powerpc/kvm/book3s_xive.c
+++ b/arch/powerpc/kvm/book3s_xive.c
@@ -531,7 +531,7 @@ static int xive_vm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr)
 	xc->cppr = xive_prio_from_guest(new_cppr);
 
 	/*
-	 * IPIs are synthetized from MFRR and thus don't need
+	 * IPIs are synthesized from MFRR and thus don't need
 	 * any special EOI handling. The underlying interrupt
 	 * used to signal MFRR changes is EOId when fetched from
 	 * the queue.
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index ccb8f16ffe..c664fdec75 100644
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -747,12 +747,6 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 	return false;
 }
 
-bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
-{
-	/* The page will get remapped properly on its next fault */
-	return kvm_e500_mmu_unmap_gfn(kvm, range);
-}
-
 /*****************************************/
 
 int e500_mmu_host_init(struct kvmppc_vcpu_e500 *vcpu_e500)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index d32abe7fe6..d11767208b 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1984,8 +1984,10 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
 			break;
 
 		r = -ENXIO;
-		if (!xive_enabled())
+		if (!xive_enabled()) {
+			fdput(f);
 			break;
+		}
 
 		r = -EPERM;
 		dev = kvm_device_from_filp(f.file);
diff --git a/arch/powerpc/kvm/test-guest-state-buffer.c b/arch/powerpc/kvm/test-guest-state-buffer.c
index 4720b8dc88..2571ccc618 100644
--- a/arch/powerpc/kvm/test-guest-state-buffer.c
+++ b/arch/powerpc/kvm/test-guest-state-buffer.c
@@ -151,7 +151,7 @@ static void test_gs_bitmap(struct kunit *test)
 		i++;
 	}
 
-	for (u16 iden = KVMPPC_GSID_GPR(0); iden <= KVMPPC_GSID_CTRL; iden++) {
+	for (u16 iden = KVMPPC_GSID_GPR(0); iden <= KVMPPC_GSE_DW_REGS_END; iden++) {
 		kvmppc_gsbm_set(&gsbm, iden);
 		kvmppc_gsbm_set(&gsbm1, iden);
 		KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 0ab65eeb93..f14ecab674 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -3,8 +3,6 @@
 # Makefile for ppc-specific library files..
 #
 
-ccflags-$(CONFIG_PPC64)	:= $(NO_MINIMAL_TOC)
-
 CFLAGS_code-patching.o += -fno-stack-protector
 CFLAGS_feature-fixups.o += -fno-stack-protector
 
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index c6ab46156c..0d1f3ee911 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -225,7 +225,7 @@ void __init poking_init(void)
 
 static unsigned long get_patch_pfn(void *addr)
 {
-	if (IS_ENABLED(CONFIG_MODULES) && is_vmalloc_or_module_addr(addr))
+	if (IS_ENABLED(CONFIG_EXECMEM) && is_vmalloc_or_module_addr(addr))
 		return vmalloc_to_pfn(addr);
 	else
 		return __pa_symbol(addr) >> PAGE_SHIFT;
@@ -372,9 +372,32 @@ int patch_instruction(u32 *addr, ppc_inst_t instr)
 }
 NOKPROBE_SYMBOL(patch_instruction);
 
+static int patch_memset64(u64 *addr, u64 val, size_t count)
+{
+	for (u64 *end = addr + count; addr < end; addr++)
+		__put_kernel_nofault(addr, &val, u64, failed);
+
+	return 0;
+
+failed:
+	return -EPERM;
+}
+
+static int patch_memset32(u32 *addr, u32 val, size_t count)
+{
+	for (u32 *end = addr + count; addr < end; addr++)
+		__put_kernel_nofault(addr, &val, u32, failed);
+
+	return 0;
+
+failed:
+	return -EPERM;
+}
+
 static int __patch_instructions(u32 *patch_addr, u32 *code, size_t len, bool repeat_instr)
 {
 	unsigned long start = (unsigned long)patch_addr;
+	int err;
 
 	/* Repeat instruction */
 	if (repeat_instr) {
@@ -383,19 +406,19 @@ static int __patch_instructions(u32 *patch_addr, u32 *code, size_t len, bool rep
 		if (ppc_inst_prefixed(instr)) {
 			u64 val = ppc_inst_as_ulong(instr);
 
-			memset64((u64 *)patch_addr, val, len / 8);
+			err = patch_memset64((u64 *)patch_addr, val, len / 8);
 		} else {
 			u32 val = ppc_inst_val(instr);
 
-			memset32(patch_addr, val, len / 4);
+			err = patch_memset32(patch_addr, val, len / 4);
 		}
 	} else {
-		memcpy(patch_addr, code, len);
+		err = copy_to_kernel_nofault(patch_addr, code, len);
 	}
 
 	smp_wmb();	/* smp write barrier */
 	flush_icache_range(start, start + len);
-	return 0;
+	return err;
 }
 
 /*
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index 4f82581ca2..b7201ba50b 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -25,6 +25,13 @@
 #include <asm/firmware.h>
 #include <asm/inst.h>
 
+/*
+ * Used to generate warnings if mmu or cpu feature check functions that
+ * use static keys before they are initialized.
+ */
+bool static_key_feature_checks_initialized __read_mostly;
+EXPORT_SYMBOL_GPL(static_key_feature_checks_initialized);
+
 struct fixup_entry {
 	unsigned long	mask;
 	unsigned long	value;
@@ -679,6 +686,7 @@ void __init setup_feature_keys(void)
 	jump_label_init();
 	cpu_feature_keys_init();
 	mmu_feature_keys_init();
+	static_key_feature_checks_initialized = true;
 }
 
 static int __init check_features(void)
diff --git a/arch/powerpc/lib/test-code-patching.c b/arch/powerpc/lib/test-code-patching.c
index c44823292f..f76030087f 100644
--- a/arch/powerpc/lib/test-code-patching.c
+++ b/arch/powerpc/lib/test-code-patching.c
@@ -347,6 +347,97 @@ static void __init test_prefixed_patching(void)
 	check(!memcmp(iptr, expected, sizeof(expected)));
 }
 
+static void __init test_multi_instruction_patching(void)
+{
+	u32 code[32];
+	void *buf;
+	u32 *addr32;
+	u64 *addr64;
+	ppc_inst_t inst64 = ppc_inst_prefix(OP_PREFIX << 26 | 3UL << 24, PPC_RAW_TRAP());
+	u32 inst32 = PPC_RAW_NOP();
+
+	buf = vzalloc(PAGE_SIZE * 8);
+	check(buf);
+	if (!buf)
+		return;
+
+	/* Test single page 32-bit repeated instruction */
+	addr32 = buf + PAGE_SIZE;
+	check(!patch_instructions(addr32 + 1, &inst32, 12, true));
+
+	check(addr32[0] == 0);
+	check(addr32[1] == inst32);
+	check(addr32[2] == inst32);
+	check(addr32[3] == inst32);
+	check(addr32[4] == 0);
+
+	/* Test single page 64-bit repeated instruction */
+	if (IS_ENABLED(CONFIG_PPC64)) {
+		check(ppc_inst_prefixed(inst64));
+
+		addr64 = buf + PAGE_SIZE * 2;
+		ppc_inst_write(code, inst64);
+		check(!patch_instructions((u32 *)(addr64 + 1), code, 24, true));
+
+		check(addr64[0] == 0);
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[1]), inst64));
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[2]), inst64));
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[3]), inst64));
+		check(addr64[4] == 0);
+	}
+
+	/* Test single page memcpy */
+	addr32 = buf + PAGE_SIZE * 3;
+
+	for (int i = 0; i < ARRAY_SIZE(code); i++)
+		code[i] = i + 1;
+
+	check(!patch_instructions(addr32 + 1, code, sizeof(code), false));
+
+	check(addr32[0] == 0);
+	check(!memcmp(&addr32[1], code, sizeof(code)));
+	check(addr32[ARRAY_SIZE(code) + 1] == 0);
+
+	/* Test multipage 32-bit repeated instruction */
+	addr32 = buf + PAGE_SIZE * 4 - 8;
+	check(!patch_instructions(addr32 + 1, &inst32, 12, true));
+
+	check(addr32[0] == 0);
+	check(addr32[1] == inst32);
+	check(addr32[2] == inst32);
+	check(addr32[3] == inst32);
+	check(addr32[4] == 0);
+
+	/* Test multipage 64-bit repeated instruction */
+	if (IS_ENABLED(CONFIG_PPC64)) {
+		check(ppc_inst_prefixed(inst64));
+
+		addr64 = buf + PAGE_SIZE * 5 - 8;
+		ppc_inst_write(code, inst64);
+		check(!patch_instructions((u32 *)(addr64 + 1), code, 24, true));
+
+		check(addr64[0] == 0);
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[1]), inst64));
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[2]), inst64));
+		check(ppc_inst_equal(ppc_inst_read((u32 *)&addr64[3]), inst64));
+		check(addr64[4] == 0);
+	}
+
+	/* Test multipage memcpy */
+	addr32 = buf + PAGE_SIZE * 6 - 12;
+
+	for (int i = 0; i < ARRAY_SIZE(code); i++)
+		code[i] = i + 1;
+
+	check(!patch_instructions(addr32 + 1, code, sizeof(code), false));
+
+	check(addr32[0] == 0);
+	check(!memcmp(&addr32[1], code, sizeof(code)));
+	check(addr32[ARRAY_SIZE(code) + 1] == 0);
+
+	vfree(buf);
+}
+
 static int __init test_code_patching(void)
 {
 	pr_info("Running code patching self-tests ...\n");
@@ -356,6 +447,7 @@ static int __init test_code_patching(void)
 	test_create_function_call();
 	test_translate_branch();
 	test_prefixed_patching();
+	test_multi_instruction_patching();
 
 	return 0;
 }
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index 503a6e2499..0fe2f085c0 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -3,8 +3,6 @@
 # Makefile for the linux ppc-specific parts of the memory manager.
 #
 
-ccflags-$(CONFIG_PPC64)	:= $(NO_MINIMAL_TOC)
-
 obj-y				:= fault.o mem.o pgtable.o maccess.o pageattr.o \
 				   init_$(BITS).o pgtable_$(BITS).o \
 				   pgtable-frag.o ioremap.o ioremap_$(BITS).o \
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c
index 100f999871..625fe7d08e 100644
--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -184,7 +184,7 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 
 static bool is_module_segment(unsigned long addr)
 {
-	if (!IS_ENABLED(CONFIG_MODULES))
+	if (!IS_ENABLED(CONFIG_EXECMEM))
 		return false;
 	if (addr < ALIGN_DOWN(MODULES_VADDR, SZ_256M))
 		return false;
diff --git a/arch/powerpc/mm/book3s64/Makefile b/arch/powerpc/mm/book3s64/Makefile
index cad2abc173..33af579585 100644
--- a/arch/powerpc/mm/book3s64/Makefile
+++ b/arch/powerpc/mm/book3s64/Makefile
@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-ccflags-y	:= $(NO_MINIMAL_TOC)
-
 obj-y				+= mmu_context.o pgtable.o trace.o
 ifdef CONFIG_PPC_64S_HASH_MMU
 CFLAGS_REMOVE_slb.o = $(CC_FLAGS_FTRACE)
diff --git a/arch/powerpc/mm/book3s64/slice.c b/arch/powerpc/mm/book3s64/slice.c
index c0b58afb9a..ef3ce37f1b 100644
--- a/arch/powerpc/mm/book3s64/slice.c
+++ b/arch/powerpc/mm/book3s64/slice.c
@@ -282,12 +282,10 @@ static unsigned long slice_find_area_bottomup(struct mm_struct *mm,
 {
 	int pshift = max_t(int, mmu_psize_defs[psize].shift, PAGE_SHIFT);
 	unsigned long found, next_end;
-	struct vm_unmapped_area_info info;
-
-	info.flags = 0;
-	info.length = len;
-	info.align_mask = PAGE_MASK & ((1ul << pshift) - 1);
-	info.align_offset = 0;
+	struct vm_unmapped_area_info info = {
+		.length = len,
+		.align_mask = PAGE_MASK & ((1ul << pshift) - 1),
+	};
 	/*
 	 * Check till the allow max value for this mmap request
 	 */
@@ -326,13 +324,13 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm,
 {
 	int pshift = max_t(int, mmu_psize_defs[psize].shift, PAGE_SHIFT);
 	unsigned long found, prev;
-	struct vm_unmapped_area_info info;
+	struct vm_unmapped_area_info info = {
+		.flags = VM_UNMAPPED_AREA_TOPDOWN,
+		.length = len,
+		.align_mask = PAGE_MASK & ((1ul << pshift) - 1),
+	};
 	unsigned long min_addr = max(PAGE_SIZE, mmap_min_addr);
 
-	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
-	info.length = len;
-	info.align_mask = PAGE_MASK & ((1ul << pshift) - 1);
-	info.align_offset = 0;
 	/*
 	 * If we are trying to allocate above DEFAULT_MAP_WINDOW
 	 * Add the different to the mmap_base.
diff --git a/arch/powerpc/mm/cacheflush.c b/arch/powerpc/mm/cacheflush.c
index 15189592da..7186516eca 100644
--- a/arch/powerpc/mm/cacheflush.c
+++ b/arch/powerpc/mm/cacheflush.c
@@ -78,7 +78,7 @@ EXPORT_SYMBOL(flush_icache_range);
 
 #ifdef CONFIG_HIGHMEM
 /**
- * flush_dcache_icache_phys() - Flush a page by it's physical address
+ * flush_dcache_icache_phys() - Flush a page by its physical address
  * @physaddr: the physical address of the page
  */
 static void flush_dcache_icache_phys(unsigned long physaddr)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 53335ae21a..2156904524 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -71,23 +71,26 @@ static noinline int bad_area_nosemaphore(struct pt_regs *regs, unsigned long add
 	return __bad_area_nosemaphore(regs, address, SEGV_MAPERR);
 }
 
-static int __bad_area(struct pt_regs *regs, unsigned long address, int si_code)
+static int __bad_area(struct pt_regs *regs, unsigned long address, int si_code,
+		      struct mm_struct *mm, struct vm_area_struct *vma)
 {
-	struct mm_struct *mm = current->mm;
 
 	/*
 	 * Something tried to access memory that isn't in our memory map..
 	 * Fix it, but check if it's kernel or user first..
 	 */
-	mmap_read_unlock(mm);
+	if (mm)
+		mmap_read_unlock(mm);
+	else
+		vma_end_read(vma);
 
 	return __bad_area_nosemaphore(regs, address, si_code);
 }
 
 static noinline int bad_access_pkey(struct pt_regs *regs, unsigned long address,
+				    struct mm_struct *mm,
 				    struct vm_area_struct *vma)
 {
-	struct mm_struct *mm = current->mm;
 	int pkey;
 
 	/*
@@ -109,7 +112,10 @@ static noinline int bad_access_pkey(struct pt_regs *regs, unsigned long address,
 	 */
 	pkey = vma_pkey(vma);
 
-	mmap_read_unlock(mm);
+	if (mm)
+		mmap_read_unlock(mm);
+	else
+		vma_end_read(vma);
 
 	/*
 	 * If we are in kernel mode, bail out with a SEGV, this will
@@ -124,9 +130,10 @@ static noinline int bad_access_pkey(struct pt_regs *regs, unsigned long address,
 	return 0;
 }
 
-static noinline int bad_access(struct pt_regs *regs, unsigned long address)
+static noinline int bad_access(struct pt_regs *regs, unsigned long address,
+			       struct mm_struct *mm, struct vm_area_struct *vma)
 {
-	return __bad_area(regs, address, SEGV_ACCERR);
+	return __bad_area(regs, address, SEGV_ACCERR, mm, vma);
 }
 
 static int do_sigbus(struct pt_regs *regs, unsigned long address,
@@ -479,13 +486,13 @@ static int ___do_page_fault(struct pt_regs *regs, unsigned long address,
 
 	if (unlikely(access_pkey_error(is_write, is_exec,
 				       (error_code & DSISR_KEYFAULT), vma))) {
-		vma_end_read(vma);
-		goto lock_mmap;
+		count_vm_vma_lock_event(VMA_LOCK_SUCCESS);
+		return bad_access_pkey(regs, address, NULL, vma);
 	}
 
 	if (unlikely(access_error(is_write, is_exec, vma))) {
-		vma_end_read(vma);
-		goto lock_mmap;
+		count_vm_vma_lock_event(VMA_LOCK_SUCCESS);
+		return bad_access(regs, address, NULL, vma);
 	}
 
 	fault = handle_mm_fault(vma, address, flags | FAULT_FLAG_VMA_LOCK, regs);
@@ -521,10 +528,10 @@ retry:
 
 	if (unlikely(access_pkey_error(is_write, is_exec,
 				       (error_code & DSISR_KEYFAULT), vma)))
-		return bad_access_pkey(regs, address, vma);
+		return bad_access_pkey(regs, address, mm, vma);
 
 	if (unlikely(access_error(is_write, is_exec, vma)))
-		return bad_access(regs, address);
+		return bad_access(regs, address, mm, vma);
 
 	/*
 	 * If for any reason at all we couldn't handle the fault,
diff --git a/arch/powerpc/mm/kasan/init_book3e_64.c b/arch/powerpc/mm/kasan/init_book3e_64.c
index 11519e88dc..43c03b84ff 100644
--- a/arch/powerpc/mm/kasan/init_book3e_64.c
+++ b/arch/powerpc/mm/kasan/init_book3e_64.c
@@ -112,7 +112,7 @@ void __init kasan_init(void)
 	pte_t zero_pte = pfn_pte(virt_to_pfn(kasan_early_shadow_page), PAGE_KERNEL_RO);
 
 	for_each_mem_range(i, &start, &end)
-		kasan_init_phys_region((void *)start, (void *)end);
+		kasan_init_phys_region(phys_to_virt(start), phys_to_virt(end));
 
 	if (IS_ENABLED(CONFIG_KASAN_VMALLOC))
 		kasan_remove_zero_shadow((void *)VMALLOC_START, VMALLOC_SIZE);
diff --git a/arch/powerpc/mm/kasan/init_book3s_64.c b/arch/powerpc/mm/kasan/init_book3s_64.c
index 9300d641cf..3fb5ce4f48 100644
--- a/arch/powerpc/mm/kasan/init_book3s_64.c
+++ b/arch/powerpc/mm/kasan/init_book3s_64.c
@@ -62,7 +62,7 @@ void __init kasan_init(void)
 	}
 
 	for_each_mem_range(i, &start, &end)
-		kasan_init_phys_region((void *)start, (void *)end);
+		kasan_init_phys_region(phys_to_virt(start), phys_to_virt(end));
 
 	for (i = 0; i < PTRS_PER_PTE; i++)
 		__set_pte_at(&init_mm, (unsigned long)kasan_early_shadow_page,
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 3a440004b9..d325217ab2 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -16,6 +16,8 @@
 #include <linux/highmem.h>
 #include <linux/suspend.h>
 #include <linux/dma-direct.h>
+#include <linux/execmem.h>
+#include <linux/vmalloc.h>
 
 #include <asm/swiotlb.h>
 #include <asm/machdep.h>
@@ -30,7 +32,7 @@
 
 #include <mm/mmu_decl.h>
 
-unsigned long long memory_limit;
+unsigned long long memory_limit __initdata;
 
 unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss;
 EXPORT_SYMBOL(empty_zero_page);
@@ -406,3 +408,66 @@ int devmem_is_allowed(unsigned long pfn)
  * the EHEA driver. Drop this when drivers/net/ethernet/ibm/ehea is removed.
  */
 EXPORT_SYMBOL_GPL(walk_system_ram_range);
+
+#ifdef CONFIG_EXECMEM
+static struct execmem_info execmem_info __ro_after_init;
+
+struct execmem_info __init *execmem_arch_setup(void)
+{
+	pgprot_t kprobes_prot = strict_module_rwx_enabled() ? PAGE_KERNEL_ROX : PAGE_KERNEL_EXEC;
+	pgprot_t prot = strict_module_rwx_enabled() ? PAGE_KERNEL : PAGE_KERNEL_EXEC;
+	unsigned long fallback_start = 0, fallback_end = 0;
+	unsigned long start, end;
+
+	/*
+	 * BOOK3S_32 and 8xx define MODULES_VADDR for text allocations and
+	 * allow allocating data in the entire vmalloc space
+	 */
+#ifdef MODULES_VADDR
+	unsigned long limit = (unsigned long)_etext - SZ_32M;
+
+	BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
+
+	/* First try within 32M limit from _etext to avoid branch trampolines */
+	if (MODULES_VADDR < PAGE_OFFSET && MODULES_END > limit) {
+		start = limit;
+		fallback_start = MODULES_VADDR;
+		fallback_end = MODULES_END;
+	} else {
+		start = MODULES_VADDR;
+	}
+
+	end = MODULES_END;
+#else
+	start = VMALLOC_START;
+	end = VMALLOC_END;
+#endif
+
+	execmem_info = (struct execmem_info){
+		.ranges = {
+			[EXECMEM_DEFAULT] = {
+				.start	= start,
+				.end	= end,
+				.pgprot	= prot,
+				.alignment = 1,
+				.fallback_start	= fallback_start,
+				.fallback_end	= fallback_end,
+			},
+			[EXECMEM_KPROBES] = {
+				.start	= VMALLOC_START,
+				.end	= VMALLOC_END,
+				.pgprot	= kprobes_prot,
+				.alignment = 1,
+			},
+			[EXECMEM_MODULE_DATA] = {
+				.start	= VMALLOC_START,
+				.end	= VMALLOC_END,
+				.pgprot	= PAGE_KERNEL,
+				.alignment = 1,
+			},
+		},
+	};
+
+	return &execmem_info;
+}
+#endif /* CONFIG_EXECMEM */
diff --git a/arch/powerpc/mm/nohash/8xx.c b/arch/powerpc/mm/nohash/8xx.c
index 43d4842bb1..d93433e26d 100644
--- a/arch/powerpc/mm/nohash/8xx.c
+++ b/arch/powerpc/mm/nohash/8xx.c
@@ -94,7 +94,8 @@ static int __ref __early_map_kernel_hugepage(unsigned long va, phys_addr_t pa,
 		return -EINVAL;
 
 	set_huge_pte_at(&init_mm, va, ptep,
-			pte_mkhuge(pfn_pte(pa >> PAGE_SHIFT, prot)), psize);
+			pte_mkhuge(pfn_pte(pa >> PAGE_SHIFT, prot)),
+			1UL << mmu_psize_to_shift(psize));
 
 	return 0;
 }
diff --git a/arch/powerpc/mm/nohash/Makefile b/arch/powerpc/mm/nohash/Makefile
index f3894e79d5..b3f0498dd4 100644
--- a/arch/powerpc/mm/nohash/Makefile
+++ b/arch/powerpc/mm/nohash/Makefile
@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-ccflags-$(CONFIG_PPC64)	:= $(NO_MINIMAL_TOC)
-
 obj-y				+= mmu_context.o tlb.o tlb_low.o kup.o
 obj-$(CONFIG_PPC_BOOK3E_64)  	+= tlb_low_64e.o book3e_pgtable.o
 obj-$(CONFIG_40x)		+= 40x.o
diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index cdff129abb..5c8d1bb98b 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c
@@ -376,7 +376,7 @@ notrace void __init kaslr_early_init(void *dt_ptr, phys_addr_t size)
 		create_kaslr_tlb_entry(1, tlb_virt, tlb_phys);
 	}
 
-	/* Copy the kernel to it's new location and run */
+	/* Copy the kernel to its new location and run */
 	memcpy((void *)kernstart_virt_addr, (void *)_stext, kernel_sz);
 	flush_icache_range(kernstart_virt_addr, kernstart_virt_addr + kernel_sz);
 
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 9b99113cb5..6621cfc3ba 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -102,7 +102,7 @@ struct page *p4d_page(p4d_t p4d)
 {
 	if (p4d_leaf(p4d)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
-			VM_WARN_ON(!p4d_huge(p4d));
+			VM_WARN_ON(!p4d_leaf(p4d));
 		return pte_page(p4d_pte(p4d));
 	}
 	return virt_to_page(p4d_pgtable(p4d));
@@ -113,7 +113,7 @@ struct page *pud_page(pud_t pud)
 {
 	if (pud_leaf(pud)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
-			VM_WARN_ON(!pud_huge(pud));
+			VM_WARN_ON(!pud_leaf(pud));
 		return pte_page(pud_pte(pud));
 	}
 	return virt_to_page(pud_pgtable(pud));
@@ -132,7 +132,7 @@ struct page *pmd_page(pmd_t pmd)
 		 * enabled so these checks can't be used.
 		 */
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
-			VM_WARN_ON(!(pmd_leaf(pmd) || pmd_huge(pmd)));
+			VM_WARN_ON(!pmd_leaf(pmd));
 		return pte_page(pmd_pte(pmd));
 	}
 	return virt_to_page(pmd_page_vaddr(pmd));
diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c
index 9a60158783..a6baa6166d 100644
--- a/arch/powerpc/mm/ptdump/hashpagetable.c
+++ b/arch/powerpc/mm/ptdump/hashpagetable.c
@@ -491,7 +491,7 @@ static void walk_vmemmap(struct pg_state *st)
 	 * Traverse the vmemmaped memory and dump pages that are in the hash
 	 * pagetable.
 	 */
-	while (ptr->list) {
+	while (ptr) {
 		hpte_find(st, ptr->virt_addr, mmu_vmemmap_psize);
 		ptr = ptr->list;
 	}
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index 0f9a217833..984655419d 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -359,3 +359,13 @@ void bpf_jit_free(struct bpf_prog *fp)
 
 	bpf_prog_unlock_free(fp);
 }
+
+bool bpf_jit_supports_kfunc_call(void)
+{
+	return true;
+}
+
+bool bpf_jit_supports_far_kfunc_call(void)
+{
+	return IS_ENABLED(CONFIG_PPC64);
+}
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 58522de615..7703dcf48b 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -208,17 +208,13 @@ bpf_jit_emit_func_call_hlp(u32 *image, u32 *fimage, struct codegen_context *ctx,
 	unsigned long func_addr = func ? ppc_function_entry((void *)func) : 0;
 	long reladdr;
 
-	if (WARN_ON_ONCE(!core_kernel_text(func_addr)))
+	if (WARN_ON_ONCE(!kernel_text_address(func_addr)))
 		return -EINVAL;
 
-	if (IS_ENABLED(CONFIG_PPC_KERNEL_PCREL)) {
-		reladdr = func_addr - local_paca->kernelbase;
+#ifdef CONFIG_PPC_KERNEL_PCREL
+	reladdr = func_addr - local_paca->kernelbase;
 
-		if (reladdr >= (long)SZ_8G || reladdr < -(long)SZ_8G) {
-			pr_err("eBPF: address of %ps out of range of 34-bit relative address.\n",
-			       (void *)func);
-			return -ERANGE;
-		}
+	if (reladdr < (long)SZ_8G && reladdr >= -(long)SZ_8G) {
 		EMIT(PPC_RAW_LD(_R12, _R13, offsetof(struct paca_struct, kernelbase)));
 		/* Align for subsequent prefix instruction */
 		if (!IS_ALIGNED((unsigned long)fimage + CTX_NIA(ctx), 8))
@@ -227,6 +223,26 @@ bpf_jit_emit_func_call_hlp(u32 *image, u32 *fimage, struct codegen_context *ctx,
 		EMIT(PPC_PREFIX_MLS | __PPC_PRFX_R(0) | IMM_H18(reladdr));
 		EMIT(PPC_INST_PADDI | ___PPC_RT(_R12) | ___PPC_RA(_R12) | IMM_L(reladdr));
 	} else {
+		unsigned long pc = (unsigned long)fimage + CTX_NIA(ctx);
+		bool alignment_needed = !IS_ALIGNED(pc, 8);
+
+		reladdr = func_addr - (alignment_needed ? pc + 4 :  pc);
+
+		if (reladdr < (long)SZ_8G && reladdr >= -(long)SZ_8G) {
+			if (alignment_needed)
+				EMIT(PPC_RAW_NOP());
+			/* pla r12,addr */
+			EMIT(PPC_PREFIX_MLS | __PPC_PRFX_R(1) | IMM_H18(reladdr));
+			EMIT(PPC_INST_PADDI | ___PPC_RT(_R12) | IMM_L(reladdr));
+		} else {
+			/* We can clobber r12 */
+			PPC_LI64(_R12, func);
+		}
+	}
+	EMIT(PPC_RAW_MTCTR(_R12));
+	EMIT(PPC_RAW_BCTRL());
+#else
+	if (core_kernel_text(func_addr)) {
 		reladdr = func_addr - kernel_toc_addr();
 		if (reladdr > 0x7FFFFFFF || reladdr < -(0x80000000L)) {
 			pr_err("eBPF: address of %ps out of range of kernel_toc.\n", (void *)func);
@@ -235,9 +251,34 @@ bpf_jit_emit_func_call_hlp(u32 *image, u32 *fimage, struct codegen_context *ctx,
 
 		EMIT(PPC_RAW_ADDIS(_R12, _R2, PPC_HA(reladdr)));
 		EMIT(PPC_RAW_ADDI(_R12, _R12, PPC_LO(reladdr)));
+		EMIT(PPC_RAW_MTCTR(_R12));
+		EMIT(PPC_RAW_BCTRL());
+	} else {
+		if (IS_ENABLED(CONFIG_PPC64_ELF_ABI_V1)) {
+			/* func points to the function descriptor */
+			PPC_LI64(bpf_to_ppc(TMP_REG_2), func);
+			/* Load actual entry point from function descriptor */
+			EMIT(PPC_RAW_LD(bpf_to_ppc(TMP_REG_1), bpf_to_ppc(TMP_REG_2), 0));
+			/* ... and move it to CTR */
+			EMIT(PPC_RAW_MTCTR(bpf_to_ppc(TMP_REG_1)));
+			/*
+			 * Load TOC from function descriptor at offset 8.
+			 * We can clobber r2 since we get called through a
+			 * function pointer (so caller will save/restore r2).
+			 */
+			EMIT(PPC_RAW_LD(_R2, bpf_to_ppc(TMP_REG_2), 8));
+		} else {
+			PPC_LI64(_R12, func);
+			EMIT(PPC_RAW_MTCTR(_R12));
+		}
+		EMIT(PPC_RAW_BCTRL());
+		/*
+		 * Load r2 with kernel TOC as kernel TOC is used if function address falls
+		 * within core kernel text.
+		 */
+		EMIT(PPC_RAW_LD(_R2, _R13, offsetof(struct paca_struct, kernel_toc)));
 	}
-	EMIT(PPC_RAW_MTCTR(_R12));
-	EMIT(PPC_RAW_BCTRL());
+#endif
 
 	return 0;
 }
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 057ec2e345..d400fa391c 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -425,16 +425,6 @@ static char *memdup_to_str(char *maybe_str, int max_len, gfp_t gfp)
 	return kasprintf(gfp, "%.*s", max_len, maybe_str);
 }
 
-static ssize_t device_show_string(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct dev_ext_attribute *d;
-
-	d = container_of(attr, struct dev_ext_attribute, attr);
-
-	return sprintf(buf, "%s\n", (char *)d->var);
-}
-
 static ssize_t cpumask_show(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c
index 8f75e9574c..8c1f3b629f 100644
--- a/arch/powerpc/platforms/512x/mpc512x_shared.c
+++ b/arch/powerpc/platforms/512x/mpc512x_shared.c
@@ -279,7 +279,7 @@ static void __init mpc512x_setup_diu(void)
 	 * and so negatively affect boot time. Instead we reserve the
 	 * already configured frame buffer area so that it won't be
 	 * destroyed. The starting address of the area to reserve and
-	 * also it's length is passed to memblock_reserve(). It will be
+	 * also its length is passed to memblock_reserve(). It will be
 	 * freed later on first open of fbdev, when splash image is not
 	 * needed any more.
 	 */
diff --git a/arch/powerpc/platforms/52xx/lite5200_sleep.S b/arch/powerpc/platforms/52xx/lite5200_sleep.S
index 0b12647e7b..0ec2522ee4 100644
--- a/arch/powerpc/platforms/52xx/lite5200_sleep.S
+++ b/arch/powerpc/platforms/52xx/lite5200_sleep.S
@@ -203,7 +203,8 @@ lite5200_wakeup:
 
 	/* HIDs, MSR */
 	LOAD_SPRN(HID1, 0x19)
-	LOAD_SPRN(HID2, 0x1a)
+	/* FIXME: Should this use HID2_G2_LE? */
+	LOAD_SPRN(HID2_750FX, 0x1a)
 
 
 	/* address translation is tricky (see turn_on_mmu) */
@@ -283,7 +284,8 @@ SYM_FUNC_START_LOCAL(save_regs)
 
 	SAVE_SPRN(HID0, 0x18)
 	SAVE_SPRN(HID1, 0x19)
-	SAVE_SPRN(HID2, 0x1a)
+	/* FIXME: Should this use HID2_G2_LE? */
+	SAVE_SPRN(HID2_750FX, 0x1a)
 	mfmsr	r10
 	stw	r10, (4*0x1b)(r4)
 	/*SAVE_SPRN(LR, 0x1c) have to save it before the call */
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index b4938e344f..253421ffb4 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -12,12 +12,10 @@
 
 #undef DEBUG
 
-#include <linux/gpio.h>
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
-#include <linux/of_gpio.h>
 #include <linux/export.h>
 #include <asm/io.h>
 #include <asm/mpc52xx.h>
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index 581059527c..2bd6abcdc1 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -48,6 +48,7 @@
  * the output mode.  This driver does not change the output mode setting.
  */
 
+#include <linux/gpio/driver.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -56,7 +57,6 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
-#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
 #include <linux/property.h>
diff --git a/arch/powerpc/platforms/83xx/suspend-asm.S b/arch/powerpc/platforms/83xx/suspend-asm.S
index bc6bd4d0ae..6a62ed6082 100644
--- a/arch/powerpc/platforms/83xx/suspend-asm.S
+++ b/arch/powerpc/platforms/83xx/suspend-asm.S
@@ -68,7 +68,8 @@ _GLOBAL(mpc83xx_enter_deep_sleep)
 
 	mfspr	r5, SPRN_HID0
 	mfspr	r6, SPRN_HID1
-	mfspr	r7, SPRN_HID2
+	/* FIXME: Should this use SPRN_HID2_G2_LE? */
+	mfspr	r7, SPRN_HID2_750FX
 
 	stw	r5, SS_HID+0(r3)
 	stw	r6, SS_HID+4(r3)
@@ -396,7 +397,8 @@ mpc83xx_deep_resume:
 
 	mtspr	SPRN_HID0, r5
 	mtspr	SPRN_HID1, r6
-	mtspr	SPRN_HID2, r7
+	/* FIXME: Should this use SPRN_HID2_G2_LE? */
+	mtspr	SPRN_HID2_750FX, r7
 
 	lwz	r4, SS_IABR+0(r3)
 	lwz	r5, SS_IABR+4(r3)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 1202a69b0a..4cd9c0de22 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -424,23 +424,6 @@ static void __init cell_iommu_setup_hardware(struct cbe_iommu *iommu,
 	cell_iommu_enable_hardware(iommu);
 }
 
-#if 0/* Unused for now */
-static struct iommu_window *find_window(struct cbe_iommu *iommu,
-		unsigned long offset, unsigned long size)
-{
-	struct iommu_window *window;
-
-	/* todo: check for overlapping (but not equal) windows) */
-
-	list_for_each_entry(window, &(iommu->windows), list) {
-		if (window->offset == offset && window->size == size)
-			return window;
-	}
-
-	return NULL;
-}
-#endif
-
 static inline u32 cell_iommu_get_ioid(struct device_node *np)
 {
 	const u32 *ioid;
diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c
index 30394c6f88..fee638fd89 100644
--- a/arch/powerpc/platforms/cell/smp.c
+++ b/arch/powerpc/platforms/cell/smp.c
@@ -54,6 +54,7 @@ static cpumask_t of_spin_map;
 
 /**
  * smp_startup_cpu() - start the given cpu
+ * @lcpu: Logical CPU ID of the CPU to be started.
  *
  * At boot time, there is nothing to do for primary threads which were
  * started from Open Firmware.  For anything else, call RTAS with the
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 02a8158c46..7f4e0db8eb 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -1704,23 +1704,11 @@ static int spufs_mfc_flush(struct file *file, fl_owner_t id)
 
 	ret = spu_acquire(ctx);
 	if (ret)
-		goto out;
-#if 0
-/* this currently hangs */
-	ret = spufs_wait(ctx->mfc_wq,
-			 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2));
-	if (ret)
-		goto out;
-	ret = spufs_wait(ctx->mfc_wq,
-			 ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait);
-	if (ret)
-		goto out;
-#else
-	ret = 0;
-#endif
+		return ret;
+
 	spu_release(ctx);
-out:
-	return ret;
+
+	return 0;
 }
 
 static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync)
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 99bd027a7f..610ca85706 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -868,7 +868,7 @@ static int __spu_deactivate(struct spu_context *ctx, int force, int max_prio)
 }
 
 /**
- * spu_deactivate - unbind a context from it's physical spu
+ * spu_deactivate - unbind a context from its physical spu
  * @ctx:	spu context to unbind
  *
  * Unbind @ctx from the physical spu it is running on and schedule
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index b911b31717..b9ff37c7f6 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -595,7 +595,7 @@ void __init maple_pci_init(void)
 
 	/* Probe root PCI hosts, that is on U3 the AGP host and the
 	 * HyperTransport host. That one is actually "kept" around
-	 * and actually added last as it's resource management relies
+	 * and actually added last as its resource management relies
 	 * on the AGP resources to have been setup first
 	 */
 	root = of_find_node_by_path("/");
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 7135ea1d7d..2202bf77c7 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -2,7 +2,7 @@
 /*
  *  Support for the interrupt controllers found on Power Macintosh,
  *  currently Apple's "Grand Central" interrupt controller in all
- *  it's incarnations. OpenPIC support used on newer machines is
+ *  its incarnations. OpenPIC support used on newer machines is
  *  in a separate file
  *
  *  Copyright (C) 1997 Paul Mackerras (paulus@samba.org)
diff --git a/arch/powerpc/platforms/powermac/sleep.S b/arch/powerpc/platforms/powermac/sleep.S
index d497a60003..822ed70cdc 100644
--- a/arch/powerpc/platforms/powermac/sleep.S
+++ b/arch/powerpc/platforms/powermac/sleep.S
@@ -176,7 +176,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS)
 	 *    memory location containing the PC to resume from
 	 *    at address 0.
 	 *  - On Core99, we must store the wakeup vector at
-	 *    address 0x80 and eventually it's parameters
+	 *    address 0x80 and eventually its parameters
 	 *    at address 0x84. I've have some trouble with those
 	 *    parameters however and I no longer use them.
 	 */
diff --git a/arch/powerpc/platforms/powernv/opal-fadump.c b/arch/powerpc/platforms/powernv/opal-fadump.c
index 964f464b1b..c9c1dfb354 100644
--- a/arch/powerpc/platforms/powernv/opal-fadump.c
+++ b/arch/powerpc/platforms/powernv/opal-fadump.c
@@ -513,8 +513,8 @@ out:
 	final_note(note_buf);
 
 	pr_debug("Updating elfcore header (%llx) with cpu notes\n",
-		 fdh->elfcorehdr_addr);
-	fadump_update_elfcore_header(__va(fdh->elfcorehdr_addr));
+		 fadump_conf->elfcorehdr_addr);
+	fadump_update_elfcore_header((char *)fadump_conf->elfcorehdr_addr);
 	return 0;
 }
 
@@ -526,12 +526,7 @@ static int __init opal_fadump_process(struct fw_dump *fadump_conf)
 	if (!opal_fdm_active || !fadump_conf->fadumphdr_addr)
 		return rc;
 
-	/* Validate the fadump crash info header */
 	fdh = __va(fadump_conf->fadumphdr_addr);
-	if (fdh->magic_number != FADUMP_CRASH_INFO_MAGIC) {
-		pr_err("Crash info header is not valid.\n");
-		return rc;
-	}
 
 #ifdef CONFIG_OPAL_CORE
 	/*
@@ -545,18 +540,7 @@ static int __init opal_fadump_process(struct fw_dump *fadump_conf)
 		kernel_initiated = true;
 #endif
 
-	rc = opal_fadump_build_cpu_notes(fadump_conf, fdh);
-	if (rc)
-		return rc;
-
-	/*
-	 * We are done validating dump info and elfcore header is now ready
-	 * to be exported. set elfcorehdr_addr so that vmcore module will
-	 * export the elfcore header through '/proc/vmcore'.
-	 */
-	elfcorehdr_addr = fdh->elfcorehdr_addr;
-
-	return rc;
+	return opal_fadump_build_cpu_notes(fadump_conf, fdh);
 }
 
 static void opal_fadump_region_show(struct fw_dump *fadump_conf,
@@ -615,6 +599,12 @@ static void opal_fadump_trigger(struct fadump_crash_info_header *fdh,
 		pr_emerg("No backend support for MPIPL!\n");
 }
 
+/* FADUMP_MAX_MEM_REGS or lower */
+static int opal_fadump_max_boot_mem_rgns(void)
+{
+	return FADUMP_MAX_MEM_REGS;
+}
+
 static struct fadump_ops opal_fadump_ops = {
 	.fadump_init_mem_struct		= opal_fadump_init_mem_struct,
 	.fadump_get_metadata_size	= opal_fadump_get_metadata_size,
@@ -627,6 +617,7 @@ static struct fadump_ops opal_fadump_ops = {
 	.fadump_process			= opal_fadump_process,
 	.fadump_region_show		= opal_fadump_region_show,
 	.fadump_trigger			= opal_fadump_trigger,
+	.fadump_max_boot_mem_rgns	= opal_fadump_max_boot_mem_rgns,
 };
 
 void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node)
@@ -674,8 +665,10 @@ void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node)
 		}
 	}
 
-	fadump_conf->ops		= &opal_fadump_ops;
-	fadump_conf->fadump_supported	= 1;
+	fadump_conf->ops			= &opal_fadump_ops;
+	fadump_conf->fadump_supported		= 1;
+	/* TODO: Add support to pass additional parameters */
+	fadump_conf->param_area_supported	= 0;
 
 	/*
 	 * Firmware supports 32-bit field for size. Align it to PAGE_SIZE
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 45dd77e3cc..5d0f35bb91 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -792,14 +792,6 @@ static int __init opal_sysfs_init(void)
 	return 0;
 }
 
-static ssize_t export_attr_read(struct file *fp, struct kobject *kobj,
-				struct bin_attribute *bin_attr, char *buf,
-				loff_t off, size_t count)
-{
-	return memory_read_from_buffer(buf, count, &off, bin_attr->private,
-				       bin_attr->size);
-}
-
 static int opal_add_one_export(struct kobject *parent, const char *export_name,
 			       struct device_node *np, const char *prop_name)
 {
@@ -826,7 +818,7 @@ static int opal_add_one_export(struct kobject *parent, const char *export_name,
 	sysfs_bin_attr_init(attr);
 	attr->attr.name = name;
 	attr->attr.mode = 0400;
-	attr->read = export_attr_read;
+	attr->read = sysfs_bin_attr_simple_read;
 	attr->private = __va(vals[0]);
 	attr->size = vals[1];
 
diff --git a/arch/powerpc/platforms/powernv/pci-sriov.c b/arch/powerpc/platforms/powernv/pci-sriov.c
index 59882da3e7..cc7b1dd54a 100644
--- a/arch/powerpc/platforms/powernv/pci-sriov.c
+++ b/arch/powerpc/platforms/powernv/pci-sriov.c
@@ -238,7 +238,7 @@ void pnv_pci_ioda_fixup_iov(struct pci_dev *pdev)
 	} else if (pdev->is_physfn) {
 		/*
 		 * For PFs adjust their allocated IOV resources to match what
-		 * the PHB can support using it's M64 BAR table.
+		 * the PHB can support using its M64 BAR table.
 		 */
 		pnv_pci_ioda_fixup_iov_resources(pdev);
 	}
@@ -658,7 +658,7 @@ static void pnv_ioda_setup_vf_PE(struct pci_dev *pdev, u16 num_vfs)
 		list_add_tail(&pe->list, &phb->ioda.pe_list);
 		mutex_unlock(&phb->ioda.pe_list_mutex);
 
-		/* associate this pe to it's pdn */
+		/* associate this pe to its pdn */
 		list_for_each_entry(vf_pdn, &pdn->parent->child_list, list) {
 			if (vf_pdn->busno == vf_bus &&
 			    vf_pdn->devfn == vf_devfn) {
diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c
index b664838008..5147df3a18 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -1059,7 +1059,7 @@ struct vas_window *vas_tx_win_open(int vasid, enum vas_cop_type cop,
 		}
 	} else {
 		/*
-		 * Interrupt hanlder or fault window setup failed. Means
+		 * Interrupt handler or fault window setup failed. Means
 		 * NX can not generate fault for page fault. So not
 		 * opening for user space tx window.
 		 */
diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c
index 878bc16024..b18e1c92e5 100644
--- a/arch/powerpc/platforms/ps3/device-init.c
+++ b/arch/powerpc/platforms/ps3/device-init.c
@@ -770,49 +770,51 @@ static struct task_struct *probe_task;
 
 static int ps3_probe_thread(void *data)
 {
-	struct ps3_notification_device dev;
+	struct {
+		struct ps3_notification_device dev;
+		u8 buf[512];
+	} *local;
+	struct ps3_notify_cmd *notify_cmd;
+	struct ps3_notify_event *notify_event;
 	int res;
 	unsigned int irq;
 	u64 lpar;
-	void *buf;
-	struct ps3_notify_cmd *notify_cmd;
-	struct ps3_notify_event *notify_event;
 
 	pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
 
-	buf = kzalloc(512, GFP_KERNEL);
-	if (!buf)
+	local = kzalloc(sizeof(*local), GFP_KERNEL);
+	if (!local)
 		return -ENOMEM;
 
-	lpar = ps3_mm_phys_to_lpar(__pa(buf));
-	notify_cmd = buf;
-	notify_event = buf;
+	lpar = ps3_mm_phys_to_lpar(__pa(&local->buf));
+	notify_cmd = (struct ps3_notify_cmd *)&local->buf;
+	notify_event = (struct ps3_notify_event *)&local->buf;
 
 	/* dummy system bus device */
-	dev.sbd.bus_id = (u64)data;
-	dev.sbd.dev_id = PS3_NOTIFICATION_DEV_ID;
-	dev.sbd.interrupt_id = PS3_NOTIFICATION_INTERRUPT_ID;
+	local->dev.sbd.bus_id = (u64)data;
+	local->dev.sbd.dev_id = PS3_NOTIFICATION_DEV_ID;
+	local->dev.sbd.interrupt_id = PS3_NOTIFICATION_INTERRUPT_ID;
 
-	res = lv1_open_device(dev.sbd.bus_id, dev.sbd.dev_id, 0);
+	res = lv1_open_device(local->dev.sbd.bus_id, local->dev.sbd.dev_id, 0);
 	if (res) {
 		pr_err("%s:%u: lv1_open_device failed %s\n", __func__,
 		       __LINE__, ps3_result(res));
 		goto fail_free;
 	}
 
-	res = ps3_sb_event_receive_port_setup(&dev.sbd, PS3_BINDING_CPU_ANY,
-					      &irq);
+	res = ps3_sb_event_receive_port_setup(&local->dev.sbd,
+		PS3_BINDING_CPU_ANY, &irq);
 	if (res) {
 		pr_err("%s:%u: ps3_sb_event_receive_port_setup failed %d\n",
 		       __func__, __LINE__, res);
 	       goto fail_close_device;
 	}
 
-	spin_lock_init(&dev.lock);
-	rcuwait_init(&dev.wait);
+	spin_lock_init(&local->dev.lock);
+	rcuwait_init(&local->dev.wait);
 
 	res = request_irq(irq, ps3_notification_interrupt, 0,
-			  "ps3_notification", &dev);
+			  "ps3_notification", &local->dev);
 	if (res) {
 		pr_err("%s:%u: request_irq failed %d\n", __func__, __LINE__,
 		       res);
@@ -823,7 +825,7 @@ static int ps3_probe_thread(void *data)
 	notify_cmd->operation_code = 0; /* must be zero */
 	notify_cmd->event_mask = 1UL << notify_region_probe;
 
-	res = ps3_notification_read_write(&dev, lpar, 1);
+	res = ps3_notification_read_write(&local->dev, lpar, 1);
 	if (res)
 		goto fail_free_irq;
 
@@ -834,36 +836,37 @@ static int ps3_probe_thread(void *data)
 
 		memset(notify_event, 0, sizeof(*notify_event));
 
-		res = ps3_notification_read_write(&dev, lpar, 0);
+		res = ps3_notification_read_write(&local->dev, lpar, 0);
 		if (res)
 			break;
 
 		pr_debug("%s:%u: notify event type 0x%llx bus id %llu dev id %llu"
 			 " type %llu port %llu\n", __func__, __LINE__,
-			 notify_event->event_type, notify_event->bus_id,
-			 notify_event->dev_id, notify_event->dev_type,
-			 notify_event->dev_port);
+			notify_event->event_type, notify_event->bus_id,
+			notify_event->dev_id, notify_event->dev_type,
+			notify_event->dev_port);
 
 		if (notify_event->event_type != notify_region_probe ||
-		    notify_event->bus_id != dev.sbd.bus_id) {
+			notify_event->bus_id != local->dev.sbd.bus_id) {
 			pr_warn("%s:%u: bad notify_event: event %llu, dev_id %llu, dev_type %llu\n",
 				__func__, __LINE__, notify_event->event_type,
 				notify_event->dev_id, notify_event->dev_type);
 			continue;
 		}
 
-		ps3_find_and_add_device(dev.sbd.bus_id, notify_event->dev_id);
+		ps3_find_and_add_device(local->dev.sbd.bus_id,
+			notify_event->dev_id);
 
 	} while (!kthread_should_stop());
 
 fail_free_irq:
-	free_irq(irq, &dev);
+	free_irq(irq, &local->dev);
 fail_sb_event_receive_port_destroy:
-	ps3_sb_event_receive_port_destroy(&dev.sbd, irq);
+	ps3_sb_event_receive_port_destroy(&local->dev.sbd, irq);
 fail_close_device:
-	lv1_close_device(dev.sbd.bus_id, dev.sbd.dev_id);
+	lv1_close_device(local->dev.sbd.bus_id, local->dev.sbd.dev_id);
 fail_free:
-	kfree(buf);
+	kfree(local);
 
 	probe_task = NULL;
 
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index d6b5f5ecd5..56dc6b29a3 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -695,7 +695,7 @@ static const struct dma_map_ops ps3_sb_dma_ops = {
 	.unmap_page = ps3_unmap_page,
 	.mmap = dma_common_mmap,
 	.get_sgtable = dma_common_get_sgtable,
-	.alloc_pages = dma_common_alloc_pages,
+	.alloc_pages_op = dma_common_alloc_pages,
 	.free_pages = dma_common_free_pages,
 };
 
@@ -709,7 +709,7 @@ static const struct dma_map_ops ps3_ioc0_dma_ops = {
 	.unmap_page = ps3_unmap_page,
 	.mmap = dma_common_mmap,
 	.get_sgtable = dma_common_get_sgtable,
-	.alloc_pages = dma_common_alloc_pages,
+	.alloc_pages_op = dma_common_alloc_pages,
 	.free_pages = dma_common_free_pages,
 };
 
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index f936962a29..7bf506f6b8 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
-ccflags-$(CONFIG_PPC64)			:= $(NO_MINIMAL_TOC)
 ccflags-$(CONFIG_PPC_PSERIES_DEBUG)	+= -DDEBUG
 
 obj-y			:= lpar.o hvCall.o nvram.o reconfig.o \
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index 0ed56e5627..62da20f970 100644
--- a/arch/powerpc/platforms/pseries/lparcfg.c
+++ b/arch/powerpc/platforms/pseries/lparcfg.c
@@ -170,20 +170,24 @@ out:
 	kfree(buf);
 }
 
-static unsigned h_pic(unsigned long *pool_idle_time,
-		      unsigned long *num_procs)
+static long h_pic(unsigned long *pool_idle_time,
+		  unsigned long *num_procs)
 {
-	unsigned long rc;
-	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+	long rc;
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE] = {0};
 
 	rc = plpar_hcall(H_PIC, retbuf);
 
-	*pool_idle_time = retbuf[0];
-	*num_procs = retbuf[1];
+	if (pool_idle_time)
+		*pool_idle_time = retbuf[0];
+	if (num_procs)
+		*num_procs = retbuf[1];
 
 	return rc;
 }
 
+unsigned long boot_pool_idle_time;
+
 /*
  * parse_ppp_data
  * Parse out the data returned from h_get_ppp and h_pic
@@ -215,9 +219,15 @@ static void parse_ppp_data(struct seq_file *m)
 		seq_printf(m, "pool_capacity=%d\n",
 			   ppp_data.active_procs_in_pool * 100);
 
-		h_pic(&pool_idle_time, &pool_procs);
-		seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
-		seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
+		/* In case h_pic call is not successful, this would result in
+		 * APP values being wrong in tools like lparstat.
+		 */
+
+		if (h_pic(&pool_idle_time, &pool_procs) == H_SUCCESS) {
+			seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
+			seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
+			seq_printf(m, "boot_pool_idle_time=%ld\n", boot_pool_idle_time);
+		}
 	}
 
 	seq_printf(m, "unallocated_capacity_weight=%d\n",
@@ -792,6 +802,7 @@ static const struct proc_ops lparcfg_proc_ops = {
 static int __init lparcfg_init(void)
 {
 	umode_t mode = 0444;
+	long retval;
 
 	/* Allow writing if we have FW_FEATURE_SPLPAR */
 	if (firmware_has_feature(FW_FEATURE_SPLPAR))
@@ -801,6 +812,16 @@ static int __init lparcfg_init(void)
 		printk(KERN_ERR "Failed to create powerpc/lparcfg\n");
 		return -EIO;
 	}
+
+	/* If this call fails, it would result in APP values
+	 * being wrong for since boot reports of lparstat
+	 */
+	retval = h_pic(&boot_pool_idle_time, NULL);
+
+	if (retval != H_SUCCESS)
+		pr_debug("H_PIC failed during lparcfg init retval: %ld\n",
+			 retval);
+
 	return 0;
 }
 machine_device_initcall(pseries, lparcfg_init);
diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c
index c233f9db03..9b6420eb35 100644
--- a/arch/powerpc/platforms/pseries/papr_scm.c
+++ b/arch/powerpc/platforms/pseries/papr_scm.c
@@ -16,7 +16,8 @@
 #include <linux/nd.h>
 
 #include <asm/plpar_wrappers.h>
-#include <asm/papr_pdsm.h>
+#include <uapi/linux/papr_pdsm.h>
+#include <linux/papr_scm.h>
 #include <asm/mce.h>
 #include <asm/unaligned.h>
 #include <linux/perf_event.h>
@@ -29,46 +30,6 @@
 	 (1ul << ND_CMD_SET_CONFIG_DATA) | \
 	 (1ul << ND_CMD_CALL))
 
-/* DIMM health bitmap indicators */
-/* SCM device is unable to persist memory contents */
-#define PAPR_PMEM_UNARMED                   (1ULL << (63 - 0))
-/* SCM device failed to persist memory contents */
-#define PAPR_PMEM_SHUTDOWN_DIRTY            (1ULL << (63 - 1))
-/* SCM device contents are persisted from previous IPL */
-#define PAPR_PMEM_SHUTDOWN_CLEAN            (1ULL << (63 - 2))
-/* SCM device contents are not persisted from previous IPL */
-#define PAPR_PMEM_EMPTY                     (1ULL << (63 - 3))
-/* SCM device memory life remaining is critically low */
-#define PAPR_PMEM_HEALTH_CRITICAL           (1ULL << (63 - 4))
-/* SCM device will be garded off next IPL due to failure */
-#define PAPR_PMEM_HEALTH_FATAL              (1ULL << (63 - 5))
-/* SCM contents cannot persist due to current platform health status */
-#define PAPR_PMEM_HEALTH_UNHEALTHY          (1ULL << (63 - 6))
-/* SCM device is unable to persist memory contents in certain conditions */
-#define PAPR_PMEM_HEALTH_NON_CRITICAL       (1ULL << (63 - 7))
-/* SCM device is encrypted */
-#define PAPR_PMEM_ENCRYPTED                 (1ULL << (63 - 8))
-/* SCM device has been scrubbed and locked */
-#define PAPR_PMEM_SCRUBBED_AND_LOCKED       (1ULL << (63 - 9))
-
-/* Bits status indicators for health bitmap indicating unarmed dimm */
-#define PAPR_PMEM_UNARMED_MASK (PAPR_PMEM_UNARMED |		\
-				PAPR_PMEM_HEALTH_UNHEALTHY)
-
-/* Bits status indicators for health bitmap indicating unflushed dimm */
-#define PAPR_PMEM_BAD_SHUTDOWN_MASK (PAPR_PMEM_SHUTDOWN_DIRTY)
-
-/* Bits status indicators for health bitmap indicating unrestored dimm */
-#define PAPR_PMEM_BAD_RESTORE_MASK  (PAPR_PMEM_EMPTY)
-
-/* Bit status indicators for smart event notification */
-#define PAPR_PMEM_SMART_EVENT_MASK (PAPR_PMEM_HEALTH_CRITICAL | \
-				    PAPR_PMEM_HEALTH_FATAL |	\
-				    PAPR_PMEM_HEALTH_UNHEALTHY)
-
-#define PAPR_SCM_PERF_STATS_EYECATCHER __stringify(SCMSTATS)
-#define PAPR_SCM_PERF_STATS_VERSION 0x1
-
 /* Struct holding a single performance metric */
 struct papr_scm_perf_stat {
 	u8 stat_id[8];
diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c
index 1772ae3d19..6dbc73eb2c 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -18,33 +18,6 @@
 #include <asm/pci.h>
 #include "pseries.h"
 
-#if 0
-void pcibios_name_device(struct pci_dev *dev)
-{
-	struct device_node *dn;
-
-	/*
-	 * Add IBM loc code (slot) as a prefix to the device names for service
-	 */
-	dn = pci_device_to_OF_node(dev);
-	if (dn) {
-		const char *loc_code = of_get_property(dn, "ibm,loc-code",
-				NULL);
-		if (loc_code) {
-			int loc_len = strlen(loc_code);
-			if (loc_len < sizeof(dev->dev.name)) {
-				memmove(dev->dev.name+loc_len+1, dev->dev.name,
-					sizeof(dev->dev.name)-loc_len-1);
-				memcpy(dev->dev.name, loc_code, loc_len);
-				dev->dev.name[loc_len] = ' ';
-				dev->dev.name[sizeof(dev->dev.name)-1] = '\0';
-			}
-		}
-	}
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device);
-#endif
-
 #ifdef CONFIG_PCI_IOV
 #define MAX_VFS_FOR_MAP_PE 256
 struct pe_map_bar_entry {
diff --git a/arch/powerpc/platforms/pseries/rtas-fadump.c b/arch/powerpc/platforms/pseries/rtas-fadump.c
index b5853e9fcc..eceb328938 100644
--- a/arch/powerpc/platforms/pseries/rtas-fadump.c
+++ b/arch/powerpc/platforms/pseries/rtas-fadump.c
@@ -18,6 +18,7 @@
 
 #include <asm/page.h>
 #include <asm/rtas.h>
+#include <asm/setup.h>
 #include <asm/fadump.h>
 #include <asm/fadump-internal.h>
 
@@ -29,9 +30,6 @@ static const struct rtas_fadump_mem_struct *fdm_active;
 static void rtas_fadump_update_config(struct fw_dump *fadump_conf,
 				      const struct rtas_fadump_mem_struct *fdm)
 {
-	fadump_conf->boot_mem_dest_addr =
-		be64_to_cpu(fdm->rmr_region.destination_address);
-
 	fadump_conf->fadumphdr_addr = (fadump_conf->boot_mem_dest_addr +
 				       fadump_conf->boot_memory_size);
 }
@@ -43,20 +41,56 @@ static void rtas_fadump_update_config(struct fw_dump *fadump_conf,
 static void __init rtas_fadump_get_config(struct fw_dump *fadump_conf,
 				   const struct rtas_fadump_mem_struct *fdm)
 {
-	fadump_conf->boot_mem_addr[0] =
-		be64_to_cpu(fdm->rmr_region.source_address);
-	fadump_conf->boot_mem_sz[0] = be64_to_cpu(fdm->rmr_region.source_len);
-	fadump_conf->boot_memory_size = fadump_conf->boot_mem_sz[0];
+	unsigned long base, size, last_end, hole_size;
 
-	fadump_conf->boot_mem_top = fadump_conf->boot_memory_size;
-	fadump_conf->boot_mem_regs_cnt = 1;
+	last_end = 0;
+	hole_size = 0;
+	fadump_conf->boot_memory_size = 0;
+	fadump_conf->boot_mem_regs_cnt = 0;
+	pr_debug("Boot memory regions:\n");
+	for (int i = 0; i < be16_to_cpu(fdm->header.dump_num_sections); i++) {
+		int type = be16_to_cpu(fdm->rgn[i].source_data_type);
+		u64 addr;
 
-	/*
-	 * Start address of reserve dump area (permanent reservation) for
-	 * re-registering FADump after dump capture.
-	 */
-	fadump_conf->reserve_dump_area_start =
-		be64_to_cpu(fdm->cpu_state_data.destination_address);
+		switch (type) {
+		case RTAS_FADUMP_CPU_STATE_DATA:
+			addr = be64_to_cpu(fdm->rgn[i].destination_address);
+
+			fadump_conf->cpu_state_dest_vaddr = (u64)__va(addr);
+			/*
+			 * Start address of reserve dump area (permanent reservation) for
+			 * re-registering FADump after dump capture.
+			 */
+			fadump_conf->reserve_dump_area_start = addr;
+			break;
+		case RTAS_FADUMP_HPTE_REGION:
+			/* Not processed currently. */
+			break;
+		case RTAS_FADUMP_REAL_MODE_REGION:
+			base = be64_to_cpu(fdm->rgn[i].source_address);
+			size = be64_to_cpu(fdm->rgn[i].source_len);
+			pr_debug("\t[%03d] base: 0x%lx, size: 0x%lx\n", i, base, size);
+			if (!base) {
+				fadump_conf->boot_mem_dest_addr =
+					be64_to_cpu(fdm->rgn[i].destination_address);
+			}
+
+			fadump_conf->boot_mem_addr[fadump_conf->boot_mem_regs_cnt] = base;
+			fadump_conf->boot_mem_sz[fadump_conf->boot_mem_regs_cnt] = size;
+			fadump_conf->boot_memory_size += size;
+			hole_size += (base - last_end);
+			last_end = base + size;
+			fadump_conf->boot_mem_regs_cnt++;
+			break;
+		case RTAS_FADUMP_PARAM_AREA:
+			fadump_conf->param_area = be64_to_cpu(fdm->rgn[i].destination_address);
+			break;
+		default:
+			pr_warn("Section type %d unsupported on this kernel. Ignoring!\n", type);
+			break;
+		}
+	}
+	fadump_conf->boot_mem_top = fadump_conf->boot_memory_size + hole_size;
 
 	rtas_fadump_update_config(fadump_conf, fdm);
 }
@@ -64,16 +98,15 @@ static void __init rtas_fadump_get_config(struct fw_dump *fadump_conf,
 static u64 rtas_fadump_init_mem_struct(struct fw_dump *fadump_conf)
 {
 	u64 addr = fadump_conf->reserve_dump_area_start;
+	u16 sec_cnt = 0;
 
 	memset(&fdm, 0, sizeof(struct rtas_fadump_mem_struct));
 	addr = addr & PAGE_MASK;
 
 	fdm.header.dump_format_version = cpu_to_be32(0x00000001);
-	fdm.header.dump_num_sections = cpu_to_be16(3);
 	fdm.header.dump_status_flag = 0;
 	fdm.header.offset_first_dump_section =
-		cpu_to_be32((u32)offsetof(struct rtas_fadump_mem_struct,
-					  cpu_state_data));
+		cpu_to_be32((u32)offsetof(struct rtas_fadump_mem_struct, rgn));
 
 	/*
 	 * Fields for disk dump option.
@@ -89,25 +122,22 @@ static u64 rtas_fadump_init_mem_struct(struct fw_dump *fadump_conf)
 
 	/* Kernel dump sections */
 	/* cpu state data section. */
-	fdm.cpu_state_data.request_flag =
-		cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
-	fdm.cpu_state_data.source_data_type =
-		cpu_to_be16(RTAS_FADUMP_CPU_STATE_DATA);
-	fdm.cpu_state_data.source_address = 0;
-	fdm.cpu_state_data.source_len =
-		cpu_to_be64(fadump_conf->cpu_state_data_size);
-	fdm.cpu_state_data.destination_address = cpu_to_be64(addr);
+	fdm.rgn[sec_cnt].request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
+	fdm.rgn[sec_cnt].source_data_type = cpu_to_be16(RTAS_FADUMP_CPU_STATE_DATA);
+	fdm.rgn[sec_cnt].source_address = 0;
+	fdm.rgn[sec_cnt].source_len = cpu_to_be64(fadump_conf->cpu_state_data_size);
+	fdm.rgn[sec_cnt].destination_address = cpu_to_be64(addr);
 	addr += fadump_conf->cpu_state_data_size;
+	sec_cnt++;
 
 	/* hpte region section */
-	fdm.hpte_region.request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
-	fdm.hpte_region.source_data_type =
-		cpu_to_be16(RTAS_FADUMP_HPTE_REGION);
-	fdm.hpte_region.source_address = 0;
-	fdm.hpte_region.source_len =
-		cpu_to_be64(fadump_conf->hpte_region_size);
-	fdm.hpte_region.destination_address = cpu_to_be64(addr);
+	fdm.rgn[sec_cnt].request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
+	fdm.rgn[sec_cnt].source_data_type = cpu_to_be16(RTAS_FADUMP_HPTE_REGION);
+	fdm.rgn[sec_cnt].source_address = 0;
+	fdm.rgn[sec_cnt].source_len = cpu_to_be64(fadump_conf->hpte_region_size);
+	fdm.rgn[sec_cnt].destination_address = cpu_to_be64(addr);
 	addr += fadump_conf->hpte_region_size;
+	sec_cnt++;
 
 	/*
 	 * Align boot memory area destination address to page boundary to
@@ -115,14 +145,29 @@ static u64 rtas_fadump_init_mem_struct(struct fw_dump *fadump_conf)
 	 */
 	addr = PAGE_ALIGN(addr);
 
-	/* RMA region section */
-	fdm.rmr_region.request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
-	fdm.rmr_region.source_data_type =
-		cpu_to_be16(RTAS_FADUMP_REAL_MODE_REGION);
-	fdm.rmr_region.source_address = cpu_to_be64(0);
-	fdm.rmr_region.source_len = cpu_to_be64(fadump_conf->boot_memory_size);
-	fdm.rmr_region.destination_address = cpu_to_be64(addr);
-	addr += fadump_conf->boot_memory_size;
+	/* First boot memory region destination address */
+	fadump_conf->boot_mem_dest_addr = addr;
+	for (int i = 0; i < fadump_conf->boot_mem_regs_cnt; i++) {
+		/* Boot memory regions */
+		fdm.rgn[sec_cnt].request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
+		fdm.rgn[sec_cnt].source_data_type = cpu_to_be16(RTAS_FADUMP_REAL_MODE_REGION);
+		fdm.rgn[sec_cnt].source_address = cpu_to_be64(fadump_conf->boot_mem_addr[i]);
+		fdm.rgn[sec_cnt].source_len = cpu_to_be64(fadump_conf->boot_mem_sz[i]);
+		fdm.rgn[sec_cnt].destination_address = cpu_to_be64(addr);
+		addr += fadump_conf->boot_mem_sz[i];
+		sec_cnt++;
+	}
+
+	/* Parameters area */
+	if (fadump_conf->param_area) {
+		fdm.rgn[sec_cnt].request_flag = cpu_to_be32(RTAS_FADUMP_REQUEST_FLAG);
+		fdm.rgn[sec_cnt].source_data_type = cpu_to_be16(RTAS_FADUMP_PARAM_AREA);
+		fdm.rgn[sec_cnt].source_address = cpu_to_be64(fadump_conf->param_area);
+		fdm.rgn[sec_cnt].source_len = cpu_to_be64(COMMAND_LINE_SIZE);
+		fdm.rgn[sec_cnt].destination_address = cpu_to_be64(fadump_conf->param_area);
+		sec_cnt++;
+	}
+	fdm.header.dump_num_sections = cpu_to_be16(sec_cnt);
 
 	rtas_fadump_update_config(fadump_conf, &fdm);
 
@@ -136,14 +181,21 @@ static u64 rtas_fadump_get_bootmem_min(void)
 
 static int rtas_fadump_register(struct fw_dump *fadump_conf)
 {
-	unsigned int wait_time;
+	unsigned int wait_time, fdm_size;
 	int rc, err = -EIO;
 
+	/*
+	 * Platform requires the exact size of the Dump Memory Structure.
+	 * Avoid including any unused rgns in the calculation, as this
+	 * could result in a parameter error (-3) from the platform.
+	 */
+	fdm_size = sizeof(struct rtas_fadump_section_header);
+	fdm_size += be16_to_cpu(fdm.header.dump_num_sections) * sizeof(struct rtas_fadump_section);
+
 	/* TODO: Add upper time limit for the delay */
 	do {
 		rc =  rtas_call(fadump_conf->ibm_configure_kernel_dump, 3, 1,
-				NULL, FADUMP_REGISTER, &fdm,
-				sizeof(struct rtas_fadump_mem_struct));
+				NULL, FADUMP_REGISTER, &fdm, fdm_size);
 
 		wait_time = rtas_busy_delay_time(rc);
 		if (wait_time)
@@ -161,9 +213,7 @@ static int rtas_fadump_register(struct fw_dump *fadump_conf)
 		pr_err("Failed to register. Hardware Error(%d).\n", rc);
 		break;
 	case -3:
-		if (!is_fadump_boot_mem_contiguous())
-			pr_err("Can't have holes in boot memory area.\n");
-		else if (!is_fadump_reserved_mem_contiguous())
+		if (!is_fadump_reserved_mem_contiguous())
 			pr_err("Can't have holes in reserved memory area.\n");
 
 		pr_err("Failed to register. Parameter Error(%d).\n", rc);
@@ -316,11 +366,9 @@ static int __init rtas_fadump_build_cpu_notes(struct fw_dump *fadump_conf)
 	u32 num_cpus, *note_buf;
 	int i, rc = 0, cpu = 0;
 	struct pt_regs regs;
-	unsigned long addr;
 	void *vaddr;
 
-	addr = be64_to_cpu(fdm_active->cpu_state_data.destination_address);
-	vaddr = __va(addr);
+	vaddr = (void *)fadump_conf->cpu_state_dest_vaddr;
 
 	reg_header = vaddr;
 	if (be64_to_cpu(reg_header->magic_number) !=
@@ -375,11 +423,8 @@ static int __init rtas_fadump_build_cpu_notes(struct fw_dump *fadump_conf)
 	}
 	final_note(note_buf);
 
-	if (fdh) {
-		pr_debug("Updating elfcore header (%llx) with cpu notes\n",
-			 fdh->elfcorehdr_addr);
-		fadump_update_elfcore_header(__va(fdh->elfcorehdr_addr));
-	}
+	pr_debug("Updating elfcore header (%llx) with cpu notes\n", fadump_conf->elfcorehdr_addr);
+	fadump_update_elfcore_header((char *)fadump_conf->elfcorehdr_addr);
 	return 0;
 
 error_out:
@@ -389,57 +434,66 @@ error_out:
 }
 
 /*
- * Validate and process the dump data stored by firmware before exporting
- * it through '/proc/vmcore'.
+ * Validate and process the dump data stored by the firmware, and update
+ * the CPU notes of elfcorehdr.
  */
 static int __init rtas_fadump_process(struct fw_dump *fadump_conf)
 {
-	struct fadump_crash_info_header *fdh;
-	int rc = 0;
-
 	if (!fdm_active || !fadump_conf->fadumphdr_addr)
 		return -EINVAL;
 
 	/* Check if the dump data is valid. */
-	if ((be16_to_cpu(fdm_active->header.dump_status_flag) ==
-			RTAS_FADUMP_ERROR_FLAG) ||
-			(fdm_active->cpu_state_data.error_flags != 0) ||
-			(fdm_active->rmr_region.error_flags != 0)) {
-		pr_err("Dump taken by platform is not valid\n");
-		return -EINVAL;
-	}
-	if ((fdm_active->rmr_region.bytes_dumped !=
-			fdm_active->rmr_region.source_len) ||
-			!fdm_active->cpu_state_data.bytes_dumped) {
-		pr_err("Dump taken by platform is incomplete\n");
-		return -EINVAL;
-	}
+	for (int i = 0; i < be16_to_cpu(fdm_active->header.dump_num_sections); i++) {
+		int type = be16_to_cpu(fdm_active->rgn[i].source_data_type);
+		int rc = 0;
 
-	/* Validate the fadump crash info header */
-	fdh = __va(fadump_conf->fadumphdr_addr);
-	if (fdh->magic_number != FADUMP_CRASH_INFO_MAGIC) {
-		pr_err("Crash info header is not valid.\n");
-		return -EINVAL;
+		switch (type) {
+		case RTAS_FADUMP_CPU_STATE_DATA:
+		case RTAS_FADUMP_HPTE_REGION:
+		case RTAS_FADUMP_REAL_MODE_REGION:
+			if (fdm_active->rgn[i].error_flags != 0) {
+				pr_err("Dump taken by platform is not valid (%d)\n", i);
+				rc = -EINVAL;
+			}
+			if (fdm_active->rgn[i].bytes_dumped != fdm_active->rgn[i].source_len) {
+				pr_err("Dump taken by platform is incomplete (%d)\n", i);
+				rc = -EINVAL;
+			}
+			if (rc) {
+				pr_warn("Region type: %u src addr: 0x%llx dest addr: 0x%llx\n",
+					be16_to_cpu(fdm_active->rgn[i].source_data_type),
+					be64_to_cpu(fdm_active->rgn[i].source_address),
+					be64_to_cpu(fdm_active->rgn[i].destination_address));
+				return rc;
+			}
+			break;
+		case RTAS_FADUMP_PARAM_AREA:
+			if (fdm_active->rgn[i].bytes_dumped != fdm_active->rgn[i].source_len ||
+			    fdm_active->rgn[i].error_flags != 0) {
+				pr_warn("Failed to process additional parameters! Proceeding anyway..\n");
+				fadump_conf->param_area = 0;
+			}
+			break;
+		default:
+			/*
+			 * If the first/crashed kernel added a new region type that the
+			 * second/fadump kernel doesn't recognize, skip it and process
+			 * assuming backward compatibility.
+			 */
+			pr_warn("Unknown region found: type: %u src addr: 0x%llx dest addr: 0x%llx\n",
+				be16_to_cpu(fdm_active->rgn[i].source_data_type),
+				be64_to_cpu(fdm_active->rgn[i].source_address),
+				be64_to_cpu(fdm_active->rgn[i].destination_address));
+			break;
+		}
 	}
 
-	rc = rtas_fadump_build_cpu_notes(fadump_conf);
-	if (rc)
-		return rc;
-
-	/*
-	 * We are done validating dump info and elfcore header is now ready
-	 * to be exported. set elfcorehdr_addr so that vmcore module will
-	 * export the elfcore header through '/proc/vmcore'.
-	 */
-	elfcorehdr_addr = fdh->elfcorehdr_addr;
-
-	return 0;
+	return rtas_fadump_build_cpu_notes(fadump_conf);
 }
 
 static void rtas_fadump_region_show(struct fw_dump *fadump_conf,
 				    struct seq_file *m)
 {
-	const struct rtas_fadump_section *cpu_data_section;
 	const struct rtas_fadump_mem_struct *fdm_ptr;
 
 	if (fdm_active)
@@ -447,27 +501,49 @@ static void rtas_fadump_region_show(struct fw_dump *fadump_conf,
 	else
 		fdm_ptr = &fdm;
 
-	cpu_data_section = &(fdm_ptr->cpu_state_data);
-	seq_printf(m, "CPU :[%#016llx-%#016llx] %#llx bytes, Dumped: %#llx\n",
-		   be64_to_cpu(cpu_data_section->destination_address),
-		   be64_to_cpu(cpu_data_section->destination_address) +
-		   be64_to_cpu(cpu_data_section->source_len) - 1,
-		   be64_to_cpu(cpu_data_section->source_len),
-		   be64_to_cpu(cpu_data_section->bytes_dumped));
-
-	seq_printf(m, "HPTE:[%#016llx-%#016llx] %#llx bytes, Dumped: %#llx\n",
-		   be64_to_cpu(fdm_ptr->hpte_region.destination_address),
-		   be64_to_cpu(fdm_ptr->hpte_region.destination_address) +
-		   be64_to_cpu(fdm_ptr->hpte_region.source_len) - 1,
-		   be64_to_cpu(fdm_ptr->hpte_region.source_len),
-		   be64_to_cpu(fdm_ptr->hpte_region.bytes_dumped));
-
-	seq_printf(m, "DUMP: Src: %#016llx, Dest: %#016llx, ",
-		   be64_to_cpu(fdm_ptr->rmr_region.source_address),
-		   be64_to_cpu(fdm_ptr->rmr_region.destination_address));
-	seq_printf(m, "Size: %#llx, Dumped: %#llx bytes\n",
-		   be64_to_cpu(fdm_ptr->rmr_region.source_len),
-		   be64_to_cpu(fdm_ptr->rmr_region.bytes_dumped));
+
+	for (int i = 0; i < be16_to_cpu(fdm_ptr->header.dump_num_sections); i++) {
+		int type = be16_to_cpu(fdm_ptr->rgn[i].source_data_type);
+
+		switch (type) {
+		case RTAS_FADUMP_CPU_STATE_DATA:
+			seq_printf(m, "CPU :[%#016llx-%#016llx] %#llx bytes, Dumped: %#llx\n",
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address),
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address) +
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len) - 1,
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len),
+				   be64_to_cpu(fdm_ptr->rgn[i].bytes_dumped));
+			break;
+		case RTAS_FADUMP_HPTE_REGION:
+			seq_printf(m, "HPTE:[%#016llx-%#016llx] %#llx bytes, Dumped: %#llx\n",
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address),
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address) +
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len) - 1,
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len),
+				   be64_to_cpu(fdm_ptr->rgn[i].bytes_dumped));
+			break;
+		case RTAS_FADUMP_REAL_MODE_REGION:
+			seq_printf(m, "DUMP: Src: %#016llx, Dest: %#016llx, ",
+				   be64_to_cpu(fdm_ptr->rgn[i].source_address),
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address));
+			seq_printf(m, "Size: %#llx, Dumped: %#llx bytes\n",
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len),
+				   be64_to_cpu(fdm_ptr->rgn[i].bytes_dumped));
+			break;
+		case RTAS_FADUMP_PARAM_AREA:
+			seq_printf(m, "\n[%#016llx-%#016llx]: cmdline append: '%s'\n",
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address),
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address) +
+				   be64_to_cpu(fdm_ptr->rgn[i].source_len) - 1,
+				   (char *)__va(be64_to_cpu(fdm_ptr->rgn[i].destination_address)));
+			break;
+		default:
+			seq_printf(m, "Unknown region type %d : Src: %#016llx, Dest: %#016llx, ",
+				   type, be64_to_cpu(fdm_ptr->rgn[i].source_address),
+				   be64_to_cpu(fdm_ptr->rgn[i].destination_address));
+			break;
+		}
+	}
 
 	/* Dump is active. Show preserved area start address. */
 	if (fdm_active) {
@@ -483,6 +559,20 @@ static void rtas_fadump_trigger(struct fadump_crash_info_header *fdh,
 	rtas_os_term((char *)msg);
 }
 
+/* FADUMP_MAX_MEM_REGS or lower */
+static int rtas_fadump_max_boot_mem_rgns(void)
+{
+	/*
+	 * Version 1 of Kernel Assisted Dump Memory Structure (PAPR) supports 10 sections.
+	 * With one each section taken for CPU state data & HPTE respectively, 8 sections
+	 * can be used for boot memory regions.
+	 *
+	 * If new region(s) is(are) defined, maximum boot memory regions will decrease
+	 * proportionally.
+	 */
+	return RTAS_FADUMP_MAX_BOOT_MEM_REGS;
+}
+
 static struct fadump_ops rtas_fadump_ops = {
 	.fadump_init_mem_struct		= rtas_fadump_init_mem_struct,
 	.fadump_get_bootmem_min		= rtas_fadump_get_bootmem_min,
@@ -492,6 +582,7 @@ static struct fadump_ops rtas_fadump_ops = {
 	.fadump_process			= rtas_fadump_process,
 	.fadump_region_show		= rtas_fadump_region_show,
 	.fadump_trigger			= rtas_fadump_trigger,
+	.fadump_max_boot_mem_rgns	= rtas_fadump_max_boot_mem_rgns,
 };
 
 void __init rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node)
@@ -508,9 +599,10 @@ void __init rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node)
 	if (!token)
 		return;
 
-	fadump_conf->ibm_configure_kernel_dump = be32_to_cpu(*token);
-	fadump_conf->ops		= &rtas_fadump_ops;
-	fadump_conf->fadump_supported	= 1;
+	fadump_conf->ibm_configure_kernel_dump	= be32_to_cpu(*token);
+	fadump_conf->ops			= &rtas_fadump_ops;
+	fadump_conf->fadump_supported		= 1;
+	fadump_conf->param_area_supported	= 1;
 
 	/* Firmware supports 64-bit value for size, align it to pagesize. */
 	fadump_conf->max_copy_size = ALIGN_DOWN(U64_MAX, PAGE_SIZE);
diff --git a/arch/powerpc/platforms/pseries/rtas-fadump.h b/arch/powerpc/platforms/pseries/rtas-fadump.h
index fd59bd7ca9..c109abf6be 100644
--- a/arch/powerpc/platforms/pseries/rtas-fadump.h
+++ b/arch/powerpc/platforms/pseries/rtas-fadump.h
@@ -23,12 +23,24 @@
 #define RTAS_FADUMP_HPTE_REGION		0x0002
 #define RTAS_FADUMP_REAL_MODE_REGION	0x0011
 
+/* OS defined sections */
+#define RTAS_FADUMP_PARAM_AREA		0x0100
+
 /* Dump request flag */
 #define RTAS_FADUMP_REQUEST_FLAG	0x00000001
 
 /* Dump status flag */
 #define RTAS_FADUMP_ERROR_FLAG		0x2000
 
+/*
+ * The Firmware Assisted Dump Memory structure supports a maximum of 10 sections
+ * in the dump memory structure. Presently, three sections are used for
+ * CPU state data, HPTE & Parameters area, while the remaining seven sections
+ * can be used for boot memory regions.
+ */
+#define MAX_SECTIONS				10
+#define RTAS_FADUMP_MAX_BOOT_MEM_REGS		7
+
 /* Kernel Dump section info */
 struct rtas_fadump_section {
 	__be32	request_flag;
@@ -61,20 +73,15 @@ struct rtas_fadump_section_header {
  * Firmware Assisted dump memory structure. This structure is required for
  * registering future kernel dump with power firmware through rtas call.
  *
- * No disk dump option. Hence disk dump path string section is not included.
+ * In version 1, the platform permits one section header, dump-disk path
+ * and ten sections.
+ *
+ * Note: No disk dump option. Hence disk dump path string section is not
+ * included.
  */
 struct rtas_fadump_mem_struct {
 	struct rtas_fadump_section_header	header;
-
-	/* Kernel dump sections */
-	struct rtas_fadump_section		cpu_state_data;
-	struct rtas_fadump_section		hpte_region;
-
-	/*
-	 * TODO: Extend multiple boot memory regions support in the kernel
-	 *       for this platform.
-	 */
-	struct rtas_fadump_section		rmr_region;
+	struct rtas_fadump_section		rgn[MAX_SECTIONS];
 };
 
 /*
diff --git a/arch/powerpc/platforms/pseries/vas.c b/arch/powerpc/platforms/pseries/vas.c
index 71d52a670d..ba3fb7a7f2 100644
--- a/arch/powerpc/platforms/pseries/vas.c
+++ b/arch/powerpc/platforms/pseries/vas.c
@@ -228,7 +228,7 @@ static irqreturn_t pseries_vas_irq_handler(int irq, void *data)
 	struct pseries_vas_window *txwin = data;
 
 	/*
-	 * The thread hanlder will process this interrupt if it is
+	 * The thread handler will process this interrupt if it is
 	 * already running.
 	 */
 	atomic_inc(&txwin->pending_faults);
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index 90ff85c879..36d1c7d415 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -611,7 +611,7 @@ static const struct dma_map_ops vio_dma_mapping_ops = {
 	.get_required_mask = dma_iommu_get_required_mask,
 	.mmap		   = dma_common_mmap,
 	.get_sgtable	   = dma_common_get_sgtable,
-	.alloc_pages	   = dma_common_alloc_pages,
+	.alloc_pages_op	   = dma_common_alloc_pages,
 	.free_pages	   = dma_common_free_pages,
 };
 
@@ -1592,13 +1592,9 @@ static int vio_hotplug(const struct device *dev, struct kobj_uevent_env *env)
 	const char *cp;
 
 	dn = dev->of_node;
-	if (!dn)
-		return -ENODEV;
-	cp = of_get_property(dn, "compatible", NULL);
-	if (!cp)
-		return -ENODEV;
+	if (dn && (cp = of_get_property(dn, "compatible", NULL)))
+		add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
 
-	add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
 	return 0;
 }
 
diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makefile
index 78473d69cd..e989008595 100644
--- a/arch/powerpc/purgatory/Makefile
+++ b/arch/powerpc/purgatory/Makefile
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-KASAN_SANITIZE := n
-KCSAN_SANITIZE := n
-
 targets += trampoline_$(BITS).o purgatory.ro
 
 # When profile-guided optimization is enabled, llvm emits two different
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 9cb1d02951..24a177d164 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-ccflags-$(CONFIG_PPC64)		:= $(NO_MINIMAL_TOC)
-
 mpic-msi-obj-$(CONFIG_PCI_MSI)	+= mpic_msi.o mpic_u3msi.o
 obj-$(CONFIG_MPIC)		+= mpic.o $(mpic-msi-obj-y)
 obj-$(CONFIG_MPIC_TIMER)        += mpic_timer.o
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 98096bbfd6..c0d10c1496 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -24,7 +24,6 @@
 #include <linux/suspend.h>
 #include <linux/memblock.h>
 #include <linux/gfp.h>
-#include <linux/kmemleak.h>
 #include <linux/of_address.h>
 #include <asm/io.h>
 #include <asm/iommu.h>
@@ -243,9 +242,6 @@ static void __init allocate_dart(void)
 	if (!dart_tablebase)
 		panic("Failed to allocate 16MB below 2GB for DART table\n");
 
-	/* There is no point scanning the DART space for leaks*/
-	kmemleak_no_scan((void *)dart_tablebase);
-
 	/* Allocate a spare page to map all invalid DART pages. We need to do
 	 * that to work around what looks like a problem with the HT bridge
 	 * prefetching into invalid pages and corrupting data
diff --git a/arch/powerpc/sysdev/fsl_gtm.c b/arch/powerpc/sysdev/fsl_gtm.c
index 39186ad6b3..3dabc96218 100644
--- a/arch/powerpc/sysdev/fsl_gtm.c
+++ b/arch/powerpc/sysdev/fsl_gtm.c
@@ -77,7 +77,7 @@ struct gtm {
 static LIST_HEAD(gtms);
 
 /**
- * gtm_get_timer - request GTM timer to use it with the rest of GTM API
+ * gtm_get_timer16 - request GTM timer to use it with the rest of GTM API
  * Context:	non-IRQ
  *
  * This function reserves GTM timer for later use. It returns gtm_timer
@@ -110,7 +110,7 @@ struct gtm_timer *gtm_get_timer16(void)
 EXPORT_SYMBOL(gtm_get_timer16);
 
 /**
- * gtm_get_specific_timer - request specific GTM timer
+ * gtm_get_specific_timer16 - request specific GTM timer
  * @gtm:	specific GTM, pass here GTM's device_node->data
  * @timer:	specific timer number, Timer1 is 0.
  * Context:	non-IRQ
@@ -260,7 +260,7 @@ int gtm_set_timer16(struct gtm_timer *tmr, unsigned long usec, bool reload)
 EXPORT_SYMBOL(gtm_set_timer16);
 
 /**
- * gtm_set_exact_utimer16 - (re)set 16 bits timer
+ * gtm_set_exact_timer16 - (re)set 16 bits timer
  * @tmr:	pointer to the gtm_timer structure obtained from gtm_get_timer
  * @usec:	timer interval in microseconds
  * @reload:	if set, the timer will reset upon expiry rather than
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
index a289cb97c1..fa01818c19 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -383,7 +383,7 @@ static unsigned int xive_get_irq(void)
  * CPU.
  *
  * If we find that there is indeed more in there, we call
- * force_external_irq_replay() to make Linux synthetize an
+ * force_external_irq_replay() to make Linux synthesize an
  * external interrupt on the next call to local_irq_restore().
  */
 static void xive_do_queue_eoi(struct xive_cpu *xc)
@@ -874,7 +874,7 @@ static int xive_irq_set_vcpu_affinity(struct irq_data *d, void *state)
 		 *
 		 * This also tells us that it's in flight to a host queue
 		 * or has already been fetched but hasn't been EOIed yet
-		 * by the host. This it's potentially using up a host
+		 * by the host. Thus it's potentially using up a host
 		 * queue slot. This is important to know because as long
 		 * as this is the case, we must not hard-unmask it when
 		 * "returning" that interrupt to the host.
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
index f1c0fa6ece..517b963e3e 100644
--- a/arch/powerpc/sysdev/xive/native.c
+++ b/arch/powerpc/sysdev/xive/native.c
@@ -415,7 +415,7 @@ static void xive_native_setup_cpu(unsigned int cpu, struct xive_cpu *xc)
 		return;
 	}
 
-	/* Grab it's CAM value */
+	/* Grab its CAM value */
 	rc = opal_xive_get_vp_info(vp, NULL, &vp_cam_be, NULL, NULL);
 	if (rc) {
 		pr_err("Failed to get pool VP info CPU %d\n", cpu);
diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile
index 682c7c0a6f..d778011060 100644
--- a/arch/powerpc/xmon/Makefile
+++ b/arch/powerpc/xmon/Makefile
@@ -10,8 +10,6 @@ KCSAN_SANITIZE := n
 # Disable ftrace for the entire directory
 ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
 
-ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
-
 # Clang stores addresses on the stack causing the frame size to blow
 # out. See https://github.com/ClangBuiltLinux/linux/issues/252
 ccflags-$(CONFIG_CC_IS_CLANG) += -Wframe-larger-than=4096
diff --git a/arch/powerpc/xmon/ppc-dis.c b/arch/powerpc/xmon/ppc-dis.c
index 75fa98221d..af105e1bc3 100644
--- a/arch/powerpc/xmon/ppc-dis.c
+++ b/arch/powerpc/xmon/ppc-dis.c
@@ -122,32 +122,21 @@ int print_insn_powerpc (unsigned long insn, unsigned long memaddr)
   bool insn_is_short;
   ppc_cpu_t dialect;
 
-  dialect = PPC_OPCODE_PPC | PPC_OPCODE_COMMON
-            | PPC_OPCODE_64 | PPC_OPCODE_POWER4 | PPC_OPCODE_ALTIVEC;
+  dialect = PPC_OPCODE_PPC | PPC_OPCODE_COMMON;
 
-  if (cpu_has_feature(CPU_FTRS_POWER5))
-    dialect |= PPC_OPCODE_POWER5;
+  if (IS_ENABLED(CONFIG_PPC64))
+    dialect |= PPC_OPCODE_64 | PPC_OPCODE_POWER4 | PPC_OPCODE_CELL |
+	PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 |
+	PPC_OPCODE_POWER9;
 
-  if (cpu_has_feature(CPU_FTRS_CELL))
-    dialect |= (PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC);
+  if (cpu_has_feature(CPU_FTR_TM))
+    dialect |= PPC_OPCODE_HTM;
 
-  if (cpu_has_feature(CPU_FTRS_POWER6))
-    dialect |= (PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC);
+  if (cpu_has_feature(CPU_FTR_ALTIVEC))
+    dialect |= PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2;
 
-  if (cpu_has_feature(CPU_FTRS_POWER7))
-    dialect |= (PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7
-                | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX);
-
-  if (cpu_has_feature(CPU_FTRS_POWER8))
-    dialect |= (PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7
-		| PPC_OPCODE_POWER8 | PPC_OPCODE_HTM
-		| PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2 | PPC_OPCODE_VSX);
-
-  if (cpu_has_feature(CPU_FTRS_POWER9))
-    dialect |= (PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7
-		| PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9 | PPC_OPCODE_HTM
-		| PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2
-		| PPC_OPCODE_VSX | PPC_OPCODE_VSX3);
+  if (cpu_has_feature(CPU_FTR_VSX))
+    dialect |= PPC_OPCODE_VSX | PPC_OPCODE_VSX3;
 
   /* Get the major opcode of the insn.  */
   opcode = NULL;
diff --git a/arch/powerpc/include/uapi/asm/papr_pdsm.h b/include/uapi/linux/papr_pdsm.h
index 1743992504..1743992504 100644
--- a/arch/powerpc/include/uapi/asm/papr_pdsm.h
+++ b/include/uapi/linux/papr_pdsm.h