diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-06-29 14:51:27 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-07-01 11:56:26 +0100 |
| commit | bd264d046aad25e9922a142a7831e6841a2f0474 (patch) | |
| tree | bc11e20fc1c2a0c307ac34e3a372f6f57733e60c /arch/arm64/include/asm/efi.h | |
| parent | 53e1b32910a3bc94d9f122321442b79b314219f8 (diff) | |
arm64: efi: always map runtime services code and data regions down to pages
To avoid triggering diagnostics in the MMU code that are finicky about
splitting block mappings into more granular mappings, ensure that regions
that are likely to appear in the Memory Attributes table as well as the
UEFI memory map are always mapped down to pages. This way, we can use
apply_to_page_range() instead of create_pgd_mapping() for the second pass,
which cannot split or merge block entries, and operates strictly on PTEs.
Note that this aligns the arm64 Memory Attributes table handling code with
the ARM code, which already uses apply_to_page_range() to set the strict
permissions.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/efi.h')
| -rw-r--r-- | arch/arm64/include/asm/efi.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h index 622db3c6474e..8b13476cdf96 100644 --- a/arch/arm64/include/asm/efi.h +++ b/arch/arm64/include/asm/efi.h @@ -14,8 +14,7 @@ extern void efi_init(void); #endif int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md); - -#define efi_set_mapping_permissions efi_create_mapping +int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md); #define arch_efi_call_virt_setup() \ ({ \ |