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efi: Make code to find mirrored memory ranges generic

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Commit b05b9f5f9d ("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>
This commit is contained in:
Ma Wupeng
2022-06-14 17:21:52 +08:00
committed by Ard Biesheuvel
parent f2906aa863
commit 6365a1935c
5 changed files with 27 additions and 27 deletions
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3
include/linux/efi.h
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@@ -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);