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| author | Ard Biesheuvel <ardb@kernel.org> | 2023-08-07 19:27:18 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-08-07 22:01:46 +0300 |
| commit | bc5ddceff4c14494d83449ad45c985e6cd353fce (patch) | |
| tree | 4867cffc891dad0cbf9215160e17abdb6ed650b1 /drivers/firmware/efi/libstub/efistub.h | |
| parent | 83381519352d6b5b3e429bf72aaab907480cb6b6 (diff) | |
| download | linux-bc5ddceff4c14494d83449ad45c985e6cd353fce.tar.xz | |
efi/libstub: Add limit argument to efi_random_alloc()
x86 will need to limit the kernel memory allocation to the lowest 512
MiB of memory, to match the behavior of the existing bare metal KASLR
physical randomization logic. So in preparation for that, add a limit
parameter to efi_random_alloc() and wire it up.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230807162720.545787-22-ardb@kernel.org
Diffstat (limited to 'drivers/firmware/efi/libstub/efistub.h')
| -rw-r--r-- | drivers/firmware/efi/libstub/efistub.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index 06b7abc92ced..9823f6fb3e01 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -956,7 +956,7 @@ efi_status_t efi_get_random_bytes(unsigned long size, u8 *out); efi_status_t efi_random_alloc(unsigned long size, unsigned long align, unsigned long *addr, unsigned long random_seed, - int memory_type); + int memory_type, unsigned long alloc_limit); efi_status_t efi_random_get_seed(void); |