diff options
Diffstat (limited to 'arch/arm64/include/asm/efi.h')
| -rw-r--r-- | arch/arm64/include/asm/efi.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h index 8604473a85b8..925364586672 100644 --- a/arch/arm64/include/asm/efi.h +++ b/arch/arm64/include/asm/efi.h @@ -84,6 +84,21 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr) return (image_addr & ~(SZ_1G - 1UL)) + (1UL << (VA_BITS_MIN - 1)); } +static inline unsigned long efi_get_kimg_min_align(void) +{ + extern bool efi_nokaslr; + + /* + * Although relocatable kernels can fix up the misalignment with + * respect to MIN_KIMG_ALIGN, the resulting virtual text addresses are + * subtly out of sync with those recorded in the vmlinux when kaslr is + * disabled but the image required relocation anyway. Therefore retain + * 2M alignment if KASLR was explicitly disabled, even if it was not + * going to be activated to begin with. + */ + return efi_nokaslr ? MIN_KIMG_ALIGN : EFI_KIMG_ALIGN; +} + #define EFI_ALLOC_ALIGN SZ_64K /* |