diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2014-11-14 15:54:11 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-11-25 15:56:42 +0000 |
| commit | 5afaa1fc1b320cec48affa7e6949f2493f875c12 (patch) | |
| tree | 6d7d20ce61c2939548c6b5105bc5130c4f7191ac /arch/arm64/include/asm/cpufeature.h | |
| parent | 301bcfac42897dbd1b0b3c1be49f24654a1bc49e (diff) | |
arm64: add Cortex-A57 erratum 832075 workaround
The ARM erratum 832075 applies to certain revisions of Cortex-A57,
one of the workarounds is to change device loads into using
load-aquire semantics.
This is achieved using the alternatives framework.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 92b6ee44669b..0362f8020d46 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -21,9 +21,10 @@ #define MAX_CPU_FEATURES (8 * sizeof(elf_hwcap)) #define cpu_feature(x) ilog2(HWCAP_ ## x) -#define ARM64_WORKAROUND_CLEAN_CACHE 0 +#define ARM64_WORKAROUND_CLEAN_CACHE 0 +#define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1 -#define NCAPS 1 +#define NCAPS 2 #ifndef __ASSEMBLY__ |