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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-08b74a000942a380fe028845f92cd3a0dee827d5.tar.xz
linux-08b74a000942a380fe028845f92cd3a0dee827d5.zip
Adding debian version 4.19.249-2.debian/4.19.249-2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch')
-rw-r--r--debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch51
1 files changed, 51 insertions, 0 deletions
diff --git a/debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch b/debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch
new file mode 100644
index 000000000..5382acce3
--- /dev/null
+++ b/debian/patches/features/x86/x86-acpi-x86-boot-Take-RSDP-address-from-boot-params.patch
@@ -0,0 +1,51 @@
+From: Juergen Gross <jgross@suse.com>
+Date: Tue, 20 Nov 2018 08:25:29 +0100
+Subject: x86/acpi, x86/boot: Take RSDP address from boot params if available
+Origin: https://git.kernel.org/linus/e6e094e053af75cbc164e950814d3d084fb1e698
+
+In case the RSDP address in struct boot_params is specified don't try
+to find the table by searching, but take the address directly as set
+by the boot loader.
+
+Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
+Signed-off-by: Juergen Gross <jgross@suse.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: boris.ostrovsky@oracle.com
+Cc: bp@alien8.de
+Cc: daniel.kiper@oracle.com
+Cc: sstabellini@kernel.org
+Cc: xen-devel@lists.xenproject.org
+Link: http://lkml.kernel.org/r/20181120072529.5489-3-jgross@suse.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+---
+ arch/x86/include/uapi/asm/bootparam.h | 3 ++-
+ arch/x86/kernel/acpi/boot.c | 2 +-
+ 2 files changed, 3 insertions(+), 2 deletions(-)
+
+Index: linux/arch/x86/include/uapi/asm/bootparam.h
+===================================================================
+--- linux.orig/arch/x86/include/uapi/asm/bootparam.h
++++ linux/arch/x86/include/uapi/asm/bootparam.h
+@@ -155,7 +155,8 @@ struct boot_params {
+ __u8 _pad2[4]; /* 0x054 */
+ __u64 tboot_addr; /* 0x058 */
+ struct ist_info ist_info; /* 0x060 */
+- __u8 _pad3[16]; /* 0x070 */
++ __u64 acpi_rsdp_addr; /* 0x070 */
++ __u8 _pad3[8]; /* 0x078 */
+ __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
+ __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
+ struct sys_desc_table sys_desc_table; /* obsolete! */ /* 0x0a0 */
+Index: linux/arch/x86/kernel/acpi/boot.c
+===================================================================
+--- linux.orig/arch/x86/kernel/acpi/boot.c
++++ linux/arch/x86/kernel/acpi/boot.c
+@@ -1775,5 +1775,5 @@ void __init arch_reserve_mem_area(acpi_p
+
+ u64 x86_default_get_root_pointer(void)
+ {
+- return 0;
++ return boot_params.acpi_rsdp_addr;
+ }