Adding upstream version 6.9.7.upstream/6.9.7upstream

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

15 files changed, 208 insertions, 76 deletions

diff --git a/arch/powerpc/crypto/.gitignore b/arch/powerpc/crypto/.gitignore
index e1094f08f..e9fe73aac 100644
--- a/arch/powerpc/crypto/.gitignore
+++ b/arch/powerpc/crypto/.gitignore
@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 aesp10-ppc.S
+aesp8-ppc.S
 ghashp10-ppc.S
+ghashp8-ppc.S
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index a41e542ba..7a8495660 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -524,7 +524,7 @@ long plpar_hcall_norets_notrace(unsigned long opcode, ...);
  * Used for all but the craziest of phyp interfaces (see plpar_hcall9)
  */
 #define PLPAR_HCALL_BUFSIZE 4
-long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...);
+long plpar_hcall(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...);
 
 /**
  * plpar_hcall_raw: - Make a hypervisor call without calculating hcall stats
@@ -538,7 +538,7 @@ long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...);
  * plpar_hcall, but plpar_hcall_raw works in real mode and does not
  * calculate hypervisor call statistics.
  */
-long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...);
+long plpar_hcall_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...);
 
 /**
  * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments
@@ -549,8 +549,8 @@ long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...);
  * PLPAR_HCALL9_BUFSIZE to size the return argument buffer.
  */
 #define PLPAR_HCALL9_BUFSIZE 9
-long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...);
-long plpar_hcall9_raw(unsigned long opcode, unsigned long *retbuf, ...);
+long plpar_hcall9(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...);
+long plpar_hcall9_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...);
 
 /* pseries hcall tracing */
 extern struct static_key hcall_tracepoint_key;
@@ -570,7 +570,7 @@ struct hvcall_mpp_data {
 	unsigned long backing_mem;
 };
 
-int h_get_mpp(struct hvcall_mpp_data *);
+long h_get_mpp(struct hvcall_mpp_data *mpp_data);
 
 struct hvcall_mpp_x_data {
 	unsigned long coalesced_bytes;
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 08c550ed4..ba2e13bb8 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -585,12 +585,12 @@ __do_out_asm(_rec_outl, "stwbrx")
 #define __do_inw(port)		_rec_inw(port)
 #define __do_inl(port)		_rec_inl(port)
 #else /* CONFIG_PPC32 */
-#define __do_outb(val, port)	writeb(val,(PCI_IO_ADDR)_IO_BASE+port);
-#define __do_outw(val, port)	writew(val,(PCI_IO_ADDR)_IO_BASE+port);
-#define __do_outl(val, port)	writel(val,(PCI_IO_ADDR)_IO_BASE+port);
-#define __do_inb(port)		readb((PCI_IO_ADDR)_IO_BASE + port);
-#define __do_inw(port)		readw((PCI_IO_ADDR)_IO_BASE + port);
-#define __do_inl(port)		readl((PCI_IO_ADDR)_IO_BASE + port);
+#define __do_outb(val, port)	writeb(val,(PCI_IO_ADDR)(_IO_BASE+port));
+#define __do_outw(val, port)	writew(val,(PCI_IO_ADDR)(_IO_BASE+port));
+#define __do_outl(val, port)	writel(val,(PCI_IO_ADDR)(_IO_BASE+port));
+#define __do_inb(port)		readb((PCI_IO_ADDR)(_IO_BASE + port));
+#define __do_inw(port)		readw((PCI_IO_ADDR)(_IO_BASE + port));
+#define __do_inl(port)		readl((PCI_IO_ADDR)(_IO_BASE + port));
 #endif /* !CONFIG_PPC32 */
 
 #ifdef CONFIG_EEH
@@ -606,12 +606,12 @@ __do_out_asm(_rec_outl, "stwbrx")
 #define __do_writesw(a, b, n)	_outsw(PCI_FIX_ADDR(a),(b),(n))
 #define __do_writesl(a, b, n)	_outsl(PCI_FIX_ADDR(a),(b),(n))
 
-#define __do_insb(p, b, n)	readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
-#define __do_insw(p, b, n)	readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
-#define __do_insl(p, b, n)	readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
-#define __do_outsb(p, b, n)	writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
-#define __do_outsw(p, b, n)	writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
-#define __do_outsl(p, b, n)	writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
+#define __do_insb(p, b, n)	readsb((PCI_IO_ADDR)(_IO_BASE+(p)), (b), (n))
+#define __do_insw(p, b, n)	readsw((PCI_IO_ADDR)(_IO_BASE+(p)), (b), (n))
+#define __do_insl(p, b, n)	readsl((PCI_IO_ADDR)(_IO_BASE+(p)), (b), (n))
+#define __do_outsb(p, b, n)	writesb((PCI_IO_ADDR)(_IO_BASE+(p)),(b),(n))
+#define __do_outsw(p, b, n)	writesw((PCI_IO_ADDR)(_IO_BASE+(p)),(b),(n))
+#define __do_outsl(p, b, n)	writesl((PCI_IO_ADDR)(_IO_BASE+(p)),(b),(n))
 
 #define __do_memset_io(addr, c, n)	\
 				_memset_io(PCI_FIX_ADDR(addr), c, n)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 005601243..076ae60b4 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -510,6 +510,7 @@
 #define PPC_RAW_STB(r, base, i)		(0x98000000 | ___PPC_RS(r) | ___PPC_RA(base) | IMM_L(i))
 #define PPC_RAW_LBZ(r, base, i)		(0x88000000 | ___PPC_RT(r) | ___PPC_RA(base) | IMM_L(i))
 #define PPC_RAW_LDX(r, base, b)		(0x7c00002a | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
+#define PPC_RAW_LHA(r, base, i)		(0xa8000000 | ___PPC_RT(r) | ___PPC_RA(base) | IMM_L(i))
 #define PPC_RAW_LHZ(r, base, i)		(0xa0000000 | ___PPC_RT(r) | ___PPC_RA(base) | IMM_L(i))
 #define PPC_RAW_LHBRX(r, base, b)	(0x7c00062c | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
 #define PPC_RAW_LWBRX(r, base, b)	(0x7c00042c | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
@@ -532,6 +533,7 @@
 #define PPC_RAW_MULW(d, a, b)		(0x7c0001d6 | ___PPC_RT(d) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_MULHWU(d, a, b)		(0x7c000016 | ___PPC_RT(d) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_MULI(d, a, i)		(0x1c000000 | ___PPC_RT(d) | ___PPC_RA(a) | IMM_L(i))
+#define PPC_RAW_DIVW(d, a, b)		(0x7c0003d6 | ___PPC_RT(d) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_DIVWU(d, a, b)		(0x7c000396 | ___PPC_RT(d) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_DIVDU(d, a, b)		(0x7c000392 | ___PPC_RT(d) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_DIVDE(t, a, b)		(0x7c000352 | ___PPC_RT(t) | ___PPC_RA(a) | ___PPC_RB(b))
@@ -550,6 +552,8 @@
 #define PPC_RAW_XOR(d, a, b)		(0x7c000278 | ___PPC_RA(d) | ___PPC_RS(a) | ___PPC_RB(b))
 #define PPC_RAW_XORI(d, a, i)		(0x68000000 | ___PPC_RA(d) | ___PPC_RS(a) | IMM_L(i))
 #define PPC_RAW_XORIS(d, a, i)		(0x6c000000 | ___PPC_RA(d) | ___PPC_RS(a) | IMM_L(i))
+#define PPC_RAW_EXTSB(d, a)		(0x7c000774 | ___PPC_RA(d) | ___PPC_RS(a))
+#define PPC_RAW_EXTSH(d, a)		(0x7c000734 | ___PPC_RA(d) | ___PPC_RS(a))
 #define PPC_RAW_EXTSW(d, a)		(0x7c0007b4 | ___PPC_RA(d) | ___PPC_RS(a))
 #define PPC_RAW_SLW(d, a, s)		(0x7c000030 | ___PPC_RA(d) | ___PPC_RS(a) | ___PPC_RB(s))
 #define PPC_RAW_SLD(d, a, s)		(0x7c000036 | ___PPC_RA(d) | ___PPC_RS(a) | ___PPC_RB(s))
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index de10437fd..4cba724c8 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -92,9 +92,25 @@ __pu_failed:							\
 		: label)
 #endif
 
+#ifdef CONFIG_CC_IS_CLANG
+#define DS_FORM_CONSTRAINT "Z<>"
+#else
+#define DS_FORM_CONSTRAINT "YZ<>"
+#endif
+
 #ifdef __powerpc64__
+#ifdef CONFIG_PPC_KERNEL_PREFIXED
 #define __put_user_asm2_goto(x, ptr, label)			\
 	__put_user_asm_goto(x, ptr, label, "std")
+#else
+#define __put_user_asm2_goto(x, addr, label)			\
+	asm goto ("1: std%U1%X1 %0,%1	# put_user\n"		\
+		EX_TABLE(1b, %l2)				\
+		:						\
+		: "r" (x), DS_FORM_CONSTRAINT (*addr)		\
+		:						\
+		: label)
+#endif // CONFIG_PPC_KERNEL_PREFIXED
 #else /* __powerpc64__ */
 #define __put_user_asm2_goto(x, addr, label)			\
 	asm goto(					\
diff --git a/arch/powerpc/kernel/kprobes-ftrace.c b/arch/powerpc/kernel/kprobes-ftrace.c
index 072ebe7f2..f8208c027 100644
--- a/arch/powerpc/kernel/kprobes-ftrace.c
+++ b/arch/powerpc/kernel/kprobes-ftrace.c
@@ -21,6 +21,9 @@ void kprobe_ftrace_handler(unsigned long nip, unsigned long parent_nip,
 	struct pt_regs *regs;
 	int bit;
 
+	if (unlikely(kprobe_ftrace_disabled))
+		return;
+
 	bit = ftrace_test_recursion_trylock(nip, parent_nip);
 	if (bit < 0)
 		return;
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 8e86eb577..692a7c6f5 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -4857,7 +4857,7 @@ int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
 	 * entering a nested guest in which case the decrementer is now owned
 	 * by L2 and the L1 decrementer is provided in hdec_expires
 	 */
-	if (!kvmhv_is_nestedv2() && kvmppc_core_pending_dec(vcpu) &&
+	if (kvmppc_core_pending_dec(vcpu) &&
 			((tb < kvmppc_dec_expires_host_tb(vcpu)) ||
 			 (trap == BOOK3S_INTERRUPT_SYSCALL &&
 			  kvmppc_get_gpr(vcpu, 3) == H_ENTER_NESTED)))
diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c
index 8e6f5355f..1091f7a83 100644
--- a/arch/powerpc/kvm/book3s_hv_nestedv2.c
+++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c
@@ -71,8 +71,8 @@ gs_msg_ops_kvmhv_nestedv2_config_fill_info(struct kvmppc_gs_buff *gsb,
 	}
 
 	if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_OUTPUT)) {
-		kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_OUTPUT,
-					 cfg->vcpu_run_output_cfg);
+		rc = kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_OUTPUT,
+					      cfg->vcpu_run_output_cfg);
 		if (rc < 0)
 			return rc;
 	}
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 83823db34..2975ea084 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -170,6 +170,7 @@ pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
 {
 	unsigned long old_pmd;
 
+	VM_WARN_ON_ONCE(!pmd_present(*pmdp));
 	old_pmd = pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_PRESENT, _PAGE_INVALID);
 	flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
 	return __pmd(old_pmd);
diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c
index 2f39c50ca..a0c4f1bde 100644
--- a/arch/powerpc/net/bpf_jit_comp32.c
+++ b/arch/powerpc/net/bpf_jit_comp32.c
@@ -450,10 +450,16 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 			}
 			break;
 		case BPF_ALU | BPF_DIV | BPF_X: /* (u32) dst /= (u32) src */
-			EMIT(PPC_RAW_DIVWU(dst_reg, src2_reg, src_reg));
+			if (off)
+				EMIT(PPC_RAW_DIVW(dst_reg, src2_reg, src_reg));
+			else
+				EMIT(PPC_RAW_DIVWU(dst_reg, src2_reg, src_reg));
 			break;
 		case BPF_ALU | BPF_MOD | BPF_X: /* (u32) dst %= (u32) src */
-			EMIT(PPC_RAW_DIVWU(_R0, src2_reg, src_reg));
+			if (off)
+				EMIT(PPC_RAW_DIVW(_R0, src2_reg, src_reg));
+			else
+				EMIT(PPC_RAW_DIVWU(_R0, src2_reg, src_reg));
 			EMIT(PPC_RAW_MULW(_R0, src_reg, _R0));
 			EMIT(PPC_RAW_SUB(dst_reg, src2_reg, _R0));
 			break;
@@ -467,10 +473,16 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 			if (imm == 1) {
 				EMIT(PPC_RAW_MR(dst_reg, src2_reg));
 			} else if (is_power_of_2((u32)imm)) {
-				EMIT(PPC_RAW_SRWI(dst_reg, src2_reg, ilog2(imm)));
+				if (off)
+					EMIT(PPC_RAW_SRAWI(dst_reg, src2_reg, ilog2(imm)));
+				else
+					EMIT(PPC_RAW_SRWI(dst_reg, src2_reg, ilog2(imm)));
 			} else {
 				PPC_LI32(_R0, imm);
-				EMIT(PPC_RAW_DIVWU(dst_reg, src2_reg, _R0));
+				if (off)
+					EMIT(PPC_RAW_DIVW(dst_reg, src2_reg, _R0));
+				else
+					EMIT(PPC_RAW_DIVWU(dst_reg, src2_reg, _R0));
 			}
 			break;
 		case BPF_ALU | BPF_MOD | BPF_K: /* (u32) dst %= (u32) imm */
@@ -480,11 +492,19 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 			if (!is_power_of_2((u32)imm)) {
 				bpf_set_seen_register(ctx, tmp_reg);
 				PPC_LI32(tmp_reg, imm);
-				EMIT(PPC_RAW_DIVWU(_R0, src2_reg, tmp_reg));
+				if (off)
+					EMIT(PPC_RAW_DIVW(_R0, src2_reg, tmp_reg));
+				else
+					EMIT(PPC_RAW_DIVWU(_R0, src2_reg, tmp_reg));
 				EMIT(PPC_RAW_MULW(_R0, tmp_reg, _R0));
 				EMIT(PPC_RAW_SUB(dst_reg, src2_reg, _R0));
 			} else if (imm == 1) {
 				EMIT(PPC_RAW_LI(dst_reg, 0));
+			} else if (off) {
+				EMIT(PPC_RAW_SRAWI(_R0, src2_reg, ilog2(imm)));
+				EMIT(PPC_RAW_ADDZE(_R0, _R0));
+				EMIT(PPC_RAW_SLWI(_R0, _R0, ilog2(imm)));
+				EMIT(PPC_RAW_SUB(dst_reg, src2_reg, _R0));
 			} else {
 				imm = ilog2((u32)imm);
 				EMIT(PPC_RAW_RLWINM(dst_reg, src2_reg, 0, 32 - imm, 31));
@@ -497,11 +517,21 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 				imm = -imm;
 			if (!is_power_of_2(imm))
 				return -EOPNOTSUPP;
-			if (imm == 1)
+			if (imm == 1) {
 				EMIT(PPC_RAW_LI(dst_reg, 0));
-			else
+				EMIT(PPC_RAW_LI(dst_reg_h, 0));
+			} else if (off) {
+				EMIT(PPC_RAW_SRAWI(dst_reg_h, src2_reg_h, 31));
+				EMIT(PPC_RAW_XOR(dst_reg, src2_reg, dst_reg_h));
+				EMIT(PPC_RAW_SUBFC(dst_reg, dst_reg_h, dst_reg));
+				EMIT(PPC_RAW_RLWINM(dst_reg, dst_reg, 0, 32 - ilog2(imm), 31));
+				EMIT(PPC_RAW_XOR(dst_reg, dst_reg, dst_reg_h));
+				EMIT(PPC_RAW_SUBFC(dst_reg, dst_reg_h, dst_reg));
+				EMIT(PPC_RAW_SUBFE(dst_reg_h, dst_reg_h, dst_reg_h));
+			} else {
 				EMIT(PPC_RAW_RLWINM(dst_reg, src2_reg, 0, 32 - ilog2(imm), 31));
-			EMIT(PPC_RAW_LI(dst_reg_h, 0));
+				EMIT(PPC_RAW_LI(dst_reg_h, 0));
+			}
 			break;
 		case BPF_ALU64 | BPF_DIV | BPF_K: /* dst /= imm */
 			if (!imm)
@@ -727,15 +757,30 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 		 * MOV
 		 */
 		case BPF_ALU64 | BPF_MOV | BPF_X: /* dst = src */
-			if (dst_reg == src_reg)
-				break;
-			EMIT(PPC_RAW_MR(dst_reg, src_reg));
-			EMIT(PPC_RAW_MR(dst_reg_h, src_reg_h));
+			if (off == 8) {
+				EMIT(PPC_RAW_EXTSB(dst_reg, src_reg));
+				EMIT(PPC_RAW_SRAWI(dst_reg_h, dst_reg, 31));
+			} else if (off == 16) {
+				EMIT(PPC_RAW_EXTSH(dst_reg, src_reg));
+				EMIT(PPC_RAW_SRAWI(dst_reg_h, dst_reg, 31));
+			} else if (off == 32 && dst_reg == src_reg) {
+				EMIT(PPC_RAW_SRAWI(dst_reg_h, src_reg, 31));
+			} else if (off == 32) {
+				EMIT(PPC_RAW_MR(dst_reg, src_reg));
+				EMIT(PPC_RAW_SRAWI(dst_reg_h, src_reg, 31));
+			} else if (dst_reg != src_reg) {
+				EMIT(PPC_RAW_MR(dst_reg, src_reg));
+				EMIT(PPC_RAW_MR(dst_reg_h, src_reg_h));
+			}
 			break;
 		case BPF_ALU | BPF_MOV | BPF_X: /* (u32) dst = src */
 			/* special mov32 for zext */
 			if (imm == 1)
 				EMIT(PPC_RAW_LI(dst_reg_h, 0));
+			else if (off == 8)
+				EMIT(PPC_RAW_EXTSB(dst_reg, src_reg));
+			else if (off == 16)
+				EMIT(PPC_RAW_EXTSH(dst_reg, src_reg));
 			else if (dst_reg != src_reg)
 				EMIT(PPC_RAW_MR(dst_reg, src_reg));
 			break;
@@ -751,6 +796,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 		 * BPF_FROM_BE/LE
 		 */
 		case BPF_ALU | BPF_END | BPF_FROM_LE:
+		case BPF_ALU64 | BPF_END | BPF_FROM_LE:
 			switch (imm) {
 			case 16:
 				/* Copy 16 bits to upper part */
@@ -785,6 +831,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 				EMIT(PPC_RAW_MR(dst_reg_h, tmp_reg));
 				break;
 			}
+			if (BPF_CLASS(code) == BPF_ALU64 && imm != 64)
+				EMIT(PPC_RAW_LI(dst_reg_h, 0));
 			break;
 		case BPF_ALU | BPF_END | BPF_FROM_BE:
 			switch (imm) {
@@ -852,6 +900,15 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 
 			/* Get offset into TMP_REG */
 			EMIT(PPC_RAW_LI(tmp_reg, off));
+			/*
+			 * Enforce full ordering for operations with BPF_FETCH by emitting a 'sync'
+			 * before and after the operation.
+			 *
+			 * This is a requirement in the Linux Kernel Memory Model.
+			 * See __cmpxchg_u32() in asm/cmpxchg.h as an example.
+			 */
+			if ((imm & BPF_FETCH) && IS_ENABLED(CONFIG_SMP))
+				EMIT(PPC_RAW_SYNC());
 			tmp_idx = ctx->idx * 4;
 			/* load value from memory into r0 */
 			EMIT(PPC_RAW_LWARX(_R0, tmp_reg, dst_reg, 0));
@@ -905,6 +962,9 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 
 			/* For the BPF_FETCH variant, get old data into src_reg */
 			if (imm & BPF_FETCH) {
+				/* Emit 'sync' to enforce full ordering */
+				if (IS_ENABLED(CONFIG_SMP))
+					EMIT(PPC_RAW_SYNC());
 				EMIT(PPC_RAW_MR(ret_reg, ax_reg));
 				if (!fp->aux->verifier_zext)
 					EMIT(PPC_RAW_LI(ret_reg - 1, 0)); /* higher 32-bit */
@@ -918,11 +978,17 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 		 * BPF_LDX
 		 */
 		case BPF_LDX | BPF_MEM | BPF_B: /* dst = *(u8 *)(ul) (src + off) */
+		case BPF_LDX | BPF_MEMSX | BPF_B:
 		case BPF_LDX | BPF_PROBE_MEM | BPF_B:
+		case BPF_LDX | BPF_PROBE_MEMSX | BPF_B:
 		case BPF_LDX | BPF_MEM | BPF_H: /* dst = *(u16 *)(ul) (src + off) */
+		case BPF_LDX | BPF_MEMSX | BPF_H:
 		case BPF_LDX | BPF_PROBE_MEM | BPF_H:
+		case BPF_LDX | BPF_PROBE_MEMSX | BPF_H:
 		case BPF_LDX | BPF_MEM | BPF_W: /* dst = *(u32 *)(ul) (src + off) */
+		case BPF_LDX | BPF_MEMSX | BPF_W:
 		case BPF_LDX | BPF_PROBE_MEM | BPF_W:
+		case BPF_LDX | BPF_PROBE_MEMSX | BPF_W:
 		case BPF_LDX | BPF_MEM | BPF_DW: /* dst = *(u64 *)(ul) (src + off) */
 		case BPF_LDX | BPF_PROBE_MEM | BPF_DW:
 			/*
@@ -931,7 +997,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 			 * load only if addr is kernel address (see is_kernel_addr()), otherwise
 			 * set dst_reg=0 and move on.
 			 */
-			if (BPF_MODE(code) == BPF_PROBE_MEM) {
+			if (BPF_MODE(code) == BPF_PROBE_MEM || BPF_MODE(code) == BPF_PROBE_MEMSX) {
 				PPC_LI32(_R0, TASK_SIZE - off);
 				EMIT(PPC_RAW_CMPLW(src_reg, _R0));
 				PPC_BCC_SHORT(COND_GT, (ctx->idx + 4) * 4);
@@ -953,30 +1019,48 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 				 * as there are two load instructions for dst_reg_h & dst_reg
 				 * respectively.
 				 */
-				if (size == BPF_DW)
+				if (size == BPF_DW ||
+				    (size == BPF_B && BPF_MODE(code) == BPF_PROBE_MEMSX))
 					PPC_JMP((ctx->idx + 3) * 4);
 				else
 					PPC_JMP((ctx->idx + 2) * 4);
 			}
 
-			switch (size) {
-			case BPF_B:
-				EMIT(PPC_RAW_LBZ(dst_reg, src_reg, off));
-				break;
-			case BPF_H:
-				EMIT(PPC_RAW_LHZ(dst_reg, src_reg, off));
-				break;
-			case BPF_W:
-				EMIT(PPC_RAW_LWZ(dst_reg, src_reg, off));
-				break;
-			case BPF_DW:
-				EMIT(PPC_RAW_LWZ(dst_reg_h, src_reg, off));
-				EMIT(PPC_RAW_LWZ(dst_reg, src_reg, off + 4));
-				break;
-			}
+			if (BPF_MODE(code) == BPF_MEMSX || BPF_MODE(code) == BPF_PROBE_MEMSX) {
+				switch (size) {
+				case BPF_B:
+					EMIT(PPC_RAW_LBZ(dst_reg, src_reg, off));
+					EMIT(PPC_RAW_EXTSB(dst_reg, dst_reg));
+					break;
+				case BPF_H:
+					EMIT(PPC_RAW_LHA(dst_reg, src_reg, off));
+					break;
+				case BPF_W:
+					EMIT(PPC_RAW_LWZ(dst_reg, src_reg, off));
+					break;
+				}
+				if (!fp->aux->verifier_zext)
+					EMIT(PPC_RAW_SRAWI(dst_reg_h, dst_reg, 31));
 
-			if (size != BPF_DW && !fp->aux->verifier_zext)
-				EMIT(PPC_RAW_LI(dst_reg_h, 0));
+			} else {
+				switch (size) {
+				case BPF_B:
+					EMIT(PPC_RAW_LBZ(dst_reg, src_reg, off));
+					break;
+				case BPF_H:
+					EMIT(PPC_RAW_LHZ(dst_reg, src_reg, off));
+					break;
+				case BPF_W:
+					EMIT(PPC_RAW_LWZ(dst_reg, src_reg, off));
+					break;
+				case BPF_DW:
+					EMIT(PPC_RAW_LWZ(dst_reg_h, src_reg, off));
+					EMIT(PPC_RAW_LWZ(dst_reg, src_reg, off + 4));
+					break;
+				}
+				if (size != BPF_DW && !fp->aux->verifier_zext)
+					EMIT(PPC_RAW_LI(dst_reg_h, 0));
+			}
 
 			if (BPF_MODE(code) == BPF_PROBE_MEM) {
 				int insn_idx = ctx->idx - 1;
@@ -1068,6 +1152,9 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code
 		case BPF_JMP | BPF_JA:
 			PPC_JMP(addrs[i + 1 + off]);
 			break;
+		case BPF_JMP32 | BPF_JA:
+			PPC_JMP(addrs[i + 1 + imm]);
+			break;
 
 		case BPF_JMP | BPF_JGT | BPF_K:
 		case BPF_JMP | BPF_JGT | BPF_X:
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 79f23974a..58522de61 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -202,7 +202,8 @@ void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx)
 	EMIT(PPC_RAW_BLR());
 }
 
-static int bpf_jit_emit_func_call_hlp(u32 *image, struct codegen_context *ctx, u64 func)
+static int
+bpf_jit_emit_func_call_hlp(u32 *image, u32 *fimage, struct codegen_context *ctx, u64 func)
 {
 	unsigned long func_addr = func ? ppc_function_entry((void *)func) : 0;
 	long reladdr;
@@ -211,19 +212,20 @@ static int bpf_jit_emit_func_call_hlp(u32 *image, struct codegen_context *ctx, u
 		return -EINVAL;
 
 	if (IS_ENABLED(CONFIG_PPC_KERNEL_PCREL)) {
-		reladdr = func_addr - CTX_NIA(ctx);
+		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 pcrel address.\n",
-				(void *)func);
+			pr_err("eBPF: address of %ps out of range of 34-bit relative address.\n",
+			       (void *)func);
 			return -ERANGE;
 		}
-		/* pla r12,addr */
-		EMIT(PPC_PREFIX_MLS | __PPC_PRFX_R(1) | IMM_H18(reladdr));
-		EMIT(PPC_INST_PADDI | ___PPC_RT(_R12) | IMM_L(reladdr));
-		EMIT(PPC_RAW_MTCTR(_R12));
-		EMIT(PPC_RAW_BCTR());
-
+		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))
+			EMIT(PPC_RAW_NOP());
+		/* paddi r12,r12,addr */
+		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 {
 		reladdr = func_addr - kernel_toc_addr();
 		if (reladdr > 0x7FFFFFFF || reladdr < -(0x80000000L)) {
@@ -233,9 +235,9 @@ static int bpf_jit_emit_func_call_hlp(u32 *image, struct codegen_context *ctx, u
 
 		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());
 	}
+	EMIT(PPC_RAW_MTCTR(_R12));
+	EMIT(PPC_RAW_BCTRL());
 
 	return 0;
 }
@@ -285,7 +287,7 @@ static int bpf_jit_emit_tail_call(u32 *image, struct codegen_context *ctx, u32 o
 	int b2p_index = bpf_to_ppc(BPF_REG_3);
 	int bpf_tailcall_prologue_size = 8;
 
-	if (IS_ENABLED(CONFIG_PPC64_ELF_ABI_V2))
+	if (!IS_ENABLED(CONFIG_PPC_KERNEL_PCREL) && IS_ENABLED(CONFIG_PPC64_ELF_ABI_V2))
 		bpf_tailcall_prologue_size += 4; /* skip past the toc load */
 
 	/*
@@ -803,6 +805,15 @@ emit_clear:
 
 			/* Get offset into TMP_REG_1 */
 			EMIT(PPC_RAW_LI(tmp1_reg, off));
+			/*
+			 * Enforce full ordering for operations with BPF_FETCH by emitting a 'sync'
+			 * before and after the operation.
+			 *
+			 * This is a requirement in the Linux Kernel Memory Model.
+			 * See __cmpxchg_u64() in asm/cmpxchg.h as an example.
+			 */
+			if ((imm & BPF_FETCH) && IS_ENABLED(CONFIG_SMP))
+				EMIT(PPC_RAW_SYNC());
 			tmp_idx = ctx->idx * 4;
 			/* load value from memory into TMP_REG_2 */
 			if (size == BPF_DW)
@@ -865,6 +876,9 @@ emit_clear:
 			PPC_BCC_SHORT(COND_NE, tmp_idx);
 
 			if (imm & BPF_FETCH) {
+				/* Emit 'sync' to enforce full ordering */
+				if (IS_ENABLED(CONFIG_SMP))
+					EMIT(PPC_RAW_SYNC());
 				EMIT(PPC_RAW_MR(ret_reg, _R0));
 				/*
 				 * Skip unnecessary zero-extension for 32-bit cmpxchg.
@@ -993,7 +1007,7 @@ emit_clear:
 				return ret;
 
 			if (func_addr_fixed)
-				ret = bpf_jit_emit_func_call_hlp(image, ctx, func_addr);
+				ret = bpf_jit_emit_func_call_hlp(image, fimage, ctx, func_addr);
 			else
 				ret = bpf_jit_emit_func_call_rel(image, fimage, ctx, func_addr);
 
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index 40aa58206..e52b848b6 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -398,6 +398,7 @@ static void mpc85xx_smp_kexec_cpu_down(int crash_shutdown, int secondary)
 	hard_irq_disable();
 	mpic_teardown_this_cpu(secondary);
 
+#ifdef CONFIG_CRASH_DUMP
 	if (cpu == crashing_cpu && cpu_thread_in_core(cpu) != 0) {
 		/*
 		 * We enter the crash kernel on whatever cpu crashed,
@@ -406,9 +407,11 @@ static void mpc85xx_smp_kexec_cpu_down(int crash_shutdown, int secondary)
 		 */
 		disable_threadbit = 1;
 		disable_cpu = cpu_first_thread_sibling(cpu);
-	} else if (sibling != crashing_cpu &&
-		   cpu_thread_in_core(cpu) == 0 &&
-		   cpu_thread_in_core(sibling) != 0) {
+	} else if (sibling == crashing_cpu) {
+		return;
+	}
+#endif
+	if (cpu_thread_in_core(cpu) == 0 && cpu_thread_in_core(sibling) != 0) {
 		disable_threadbit = 2;
 		disable_cpu = sibling;
 	}
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 4e9916bb0..c1d8bee8f 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -1886,10 +1886,10 @@ out:
  * h_get_mpp
  * H_GET_MPP hcall returns info in 7 parms
  */
-int h_get_mpp(struct hvcall_mpp_data *mpp_data)
+long h_get_mpp(struct hvcall_mpp_data *mpp_data)
 {
-	int rc;
-	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
+	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
+	long rc;
 
 	rc = plpar_hcall9(H_GET_MPP, retbuf);
 
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index f73c4d1c2..0ed56e562 100644
--- a/arch/powerpc/platforms/pseries/lparcfg.c
+++ b/arch/powerpc/platforms/pseries/lparcfg.c
@@ -113,8 +113,8 @@ struct hvcall_ppp_data {
  */
 static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data)
 {
-	unsigned long rc;
-	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
+	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
+	long rc;
 
 	rc = plpar_hcall9(H_GET_PPP, retbuf);
 
@@ -193,7 +193,7 @@ static void parse_ppp_data(struct seq_file *m)
 	struct hvcall_ppp_data ppp_data;
 	struct device_node *root;
 	const __be32 *perf_level;
-	int rc;
+	long rc;
 
 	rc = h_get_ppp(&ppp_data);
 	if (rc)
@@ -361,8 +361,8 @@ static int read_dt_lpar_name(struct seq_file *m)
 
 static void read_lpar_name(struct seq_file *m)
 {
-	if (read_rtas_lpar_name(m) && read_dt_lpar_name(m))
-		pr_err_once("Error can't get the LPAR name");
+	if (read_rtas_lpar_name(m))
+		read_dt_lpar_name(m);
 }
 
 #define SPLPAR_MAXLENGTH 1026*(sizeof(char))
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 8e6c84df4..e205135ae 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -564,10 +564,12 @@ static const struct fsl_msi_feature ipic_msi_feature = {
 	.msiir_offset = 0x38,
 };
 
+#ifdef CONFIG_EPAPR_PARAVIRT
 static const struct fsl_msi_feature vmpic_msi_feature = {
 	.fsl_pic_ip = FSL_PIC_IP_VMPIC,
 	.msiir_offset = 0,
 };
+#endif
 
 static const struct of_device_id fsl_of_msi_ids[] = {
 	{