diff options
| author | Xie XiuQi <xiexiuqi@huawei.com> | 2018-01-15 22:38:56 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-01-16 18:05:48 +0300 |
| commit | 64c02720ea3598bf5143b672274d923a941b8053 (patch) | |
| tree | 5a5920a4da384a18c5b202626df5913706d2118a /arch/arm64/include/asm/cpucaps.h | |
| parent | 7a00d68ebe5f07cb1db17e7fedfd031f0d87e8bb (diff) | |
| download | linux-64c02720ea3598bf5143b672274d923a941b8053.tar.xz | |
arm64: cpufeature: Detect CPU RAS Extentions
ARM's v8.2 Extentions add support for Reliability, Availability and
Serviceability (RAS). On CPUs with these extensions system software
can use additional barriers to isolate errors and determine if faults
are pending. Add cpufeature detection.
Platform level RAS support may require additional firmware support.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
[Rebased added config option, reworded commit message]
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cpucaps.h')
| -rw-r--r-- | arch/arm64/include/asm/cpucaps.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index 7049b4802587..bb263820de13 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -44,7 +44,8 @@ #define ARM64_UNMAP_KERNEL_AT_EL0 23 #define ARM64_HARDEN_BRANCH_PREDICTOR 24 #define ARM64_HARDEN_BP_POST_GUEST_EXIT 25 +#define ARM64_HAS_RAS_EXTN 26 -#define ARM64_NCAPS 26 +#define ARM64_NCAPS 27 #endif /* __ASM_CPUCAPS_H */ |