korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 08:14:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

efi: x86: Set the NX-compatibility flag in the PE header

Browse Source 
Following Baskov Evgeniy's "Handle UEFI NX-restricted page tables"
patches, it's safe to set this compatibility flag to let loaders know
they don't need to make special accommodations for kernel to load if
pre-boot NX is enabled.

Signed-off-by: Peter Jones <pjones@redhat.com>
Link: https://lore.kernel.org/all/20220329184743.798513-1-pjones@redhat.com/
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Peter Jones 2022-03-29 14:47:43 -04:00 committed by Ard Biesheuvel
parent 82e0d6d76a
commit 24b72bb12e
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/boot/header.S
View File

@ -163,7 +163,11 @@ extra_header_fields:
.long 0x200 # SizeOfHeaders
.long 0 # CheckSum
.word IMAGE_SUBSYSTEM_EFI_APPLICATION # Subsystem (EFI application)
#ifdef CONFIG_DXE_MEM_ATTRIBUTES
.word IMAGE_DLL_CHARACTERISTICS_NX_COMPAT # DllCharacteristics
#else
.word 0 # DllCharacteristics
#endif
#ifdef CONFIG_X86_32
.long 0 # SizeOfStackReserve
.long 0 # SizeOfStackCommit