diff options
| author | Jonathan (Zhixiong) Zhang <[email protected]> | 2015-09-04 14:11:41 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2015-09-14 11:40:03 +0200 |
| commit | 89e44b51cc0db50ea4b5bbb5d582c4db88bbaed8 (patch) | |
| tree | 0a47165178fb3130382db1ebfc1516537ea8623f /arch/arm64/include/asm/acpi.h | |
| parent | 8d446c8647c9ab8fcb45a8fc7dbbafe1f83aa2f3 (diff) | |
arm64, acpi/apei: Implement arch_apei_get_mem_attributes()
Table 8 of UEFI 2.5 section 2.3.6.1 defines mappings from EFI
memory types to MAIR attribute encodings for arm64.
If the physical address has memory attributes defined by EFI
memmap as EFI_MEMORY_[UC|WC|WT], return approprate page
protection type according to the UEFI spec. Otherwise, return
PAGE_KERNEL.
Signed-off-by: Jonathan (Zhixiong) Zhang <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>
[ Small stylistic tweaks. ]
Reviewed-by: Matt Fleming <[email protected]>
Reviewed-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Acked-by: Hanjun Guo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Will Deacon <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'arch/arm64/include/asm/acpi.h')
| -rw-r--r-- | arch/arm64/include/asm/acpi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 406485ed110a..5aa892a12a0d 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -92,4 +92,9 @@ static inline const char *acpi_get_enable_method(int cpu) { return acpi_psci_present() ? "psci" : NULL; } + +#ifdef CONFIG_ACPI_APEI +pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); +#endif + #endif /*_ASM_ACPI_H*/ |