Subject: + efi-reserve-boot-service-fix.patch added to -mm tree
To: dyoung@xxxxxxxxxx,James.Bottomley@xxxxxxxxxxxxxxxxxxxxx,bp@xxxxxxx,ebiederm@xxxxxxxxxxxx,greg@xxxxxxxxx,horms@xxxxxxxxxxxx,hpa@xxxxxxxxx,matt@xxxxxxxxxxxxxxxxx,mingo@xxxxxxx,mjg59@xxxxxxxxxxxxx,tglx@xxxxxxxxxxxxx,toshi.kani@xxxxxx,vgoyal@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 10 Dec 2013 15:23:12 -0800
The patch titled
Subject: efi: reserve boot service fix
has been added to the -mm tree. Its filename is
efi-reserve-boot-service-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/efi-reserve-boot-service-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/efi-reserve-boot-service-fix.patch
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------------------------------------------------------
From: Dave Young <dyoung@xxxxxxxxxx>
Subject: efi: reserve boot service fix
Current code check boot service region with kernel text region by:
start+size >= __pa_symbol(_text) The end of the above region should be
start + size - 1 instead.
I see this problem in ovmf + Fedora 19 grub boot: text start: 1000000 md
start: 800000 md size: 800000
Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
Acked-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Toshi Kani <toshi.kani@xxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/platform/efi/efi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/x86/platform/efi/efi.c~efi-reserve-boot-service-fix arch/x86/platform/efi/efi.c
--- a/arch/x86/platform/efi/efi.c~efi-reserve-boot-service-fix
+++ a/arch/x86/platform/efi/efi.c
@@ -438,7 +438,7 @@ void __init efi_reserve_boot_services(vo
* - Not within any part of the kernel
* - Not the bios reserved area
*/
- if ((start+size >= __pa_symbol(_text)
+ if ((start + size > __pa_symbol(_text)
&& start <= __pa_symbol(_end)) ||
!e820_all_mapped(start, start+size, E820_RAM) ||
memblock_is_region_reserved(start, size)) {
_
Patches currently in -mm which might be from dyoung@xxxxxxxxxx are
kexec-migrate-to-reboot-cpu.patch
x86-mm-sparse-warning-fix-for-early_memremap.patch
efi-use-early_memremap-and-early_memunmap.patch
efi-remove-unused-variables-in-__map_region.patch
efi-add-a-wrapper-function-efi_map_region_fixed.patch
efi-reserve-boot-service-fix.patch
efi-cleanup-efi_enter_virtual_mode-function.patch
efi-export-more-efi-table-variable-to-sysfs.patch
efi-export-efi-runtime-memory-mapping-to-sysfs.patch
efi-pass-kexec-necessary-efi-data-via-setup_data.patch
efi-only-print-saved-efi-runtime-maps-instead-of-all-memmap-ranges-for-kexec.patch
x86-add-xloadflags-bit-for-efi-runtime-support-on-kexec.patch
x86-export-x86-boot_params-to-sysfs.patch
x86-reserve-setup_data-ranges-late-after-parsing-memmap-cmdline.patch
x86-kdebugfs-do-not-use-__va-for-getting-setup_data-virt-addr.patch
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