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| author |   Ma Wupeng <mawupeng1@huawei.com> | 2022-06-14 17:21:52 +0800 |
|---|---|---|
| committer |   Ard Biesheuvel <ardb@kernel.org> | 2022-06-15 12:11:19 +0200 |
| commit | 6365a1935c5151455812e96d8de434c551dc0d98 (patch) | |
| tree | 38866d9dd01dbfe2d82b4eada37e356064f591d0 /include/linux | |
| parent | Linux 5.19-rc1 (diff) | |
| download | linux-dev-6365a1935c5151455812e96d8de434c551dc0d98.tar.xz linux-dev-6365a1935c5151455812e96d8de434c551dc0d98.zip | |
efi: Make code to find mirrored memory ranges generic
Commit b05b9f5f9dcf ("x86, mirror: x86 enabling - find mirrored memory
ranges") introduce the efi_find_mirror() function on x86. In order to reuse
the API we make it public.
Arm64 can support mirrored memory too, so function efi_find_mirror() is added to
efi_init() to this support for arm64.
Since efi_init() is shared by ARM, arm64 and riscv, this patch will bring
mirror memory support for these architectures, but this support is only tested
in arm64.
Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Link: https://lore.kernel.org/r/20220614092156.1972846-2-mawupeng1@huawei.com
[ardb: fix subject to better reflect the payload]
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/efi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 7d9b0bb47eb3..53f64c14a525 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -872,6 +872,7 @@ static inline bool efi_rt_services_supported(unsigned int mask) { return (efi.runtime_supported_mask & mask) == mask; } +extern void efi_find_mirror(void); #else static inline bool efi_enabled(int feature) { @@ -889,6 +890,8 @@ static inline bool efi_rt_services_supported(unsigned int mask) { return false; } + +static inline void efi_find_mirror(void) {} #endif extern int efi_status_to_err(efi_status_t status); |