diff options
| author | Will Deacon <will.deacon@arm.com> | 2017-03-10 23:32:24 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-03-20 19:17:02 +0300 |
| commit | dda288d7e4f605632dc6e19c69063f1725056208 (patch) | |
| tree | 72ee2d87ea23475afc08611168ff64257b9dab84 /arch/arm64/include/asm/cache.h | |
| parent | 02f7760e6e5c3d726cd9622749cdae17c571b9a3 (diff) | |
| download | linux-dda288d7e4f605632dc6e19c69063f1725056208.tar.xz | |
arm64: cache: Identify VPIPT I-caches
Add support for detecting VPIPT I-caches, as introduced by ARMv8.2.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cache.h')
| -rw-r--r-- | arch/arm64/include/asm/cache.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h index 7acb52634299..ea9bb4e0e9bb 100644 --- a/arch/arm64/include/asm/cache.h +++ b/arch/arm64/include/asm/cache.h @@ -25,6 +25,7 @@ #define CTR_L1IP(ctr) (((ctr) >> CTR_L1IP_SHIFT) & CTR_L1IP_MASK) +#define ICACHE_POLICY_VPIPT 0 #define ICACHE_POLICY_VIPT 2 #define ICACHE_POLICY_PIPT 3 @@ -45,6 +46,7 @@ #include <linux/bitops.h> #define ICACHEF_ALIASING 0 +#define ICACHEF_VPIPT 1 extern unsigned long __icache_flags; /* @@ -56,6 +58,11 @@ static inline int icache_is_aliasing(void) return test_bit(ICACHEF_ALIASING, &__icache_flags); } +static inline int icache_is_vpipt(void) +{ + return test_bit(ICACHEF_VPIPT, &__icache_flags); +} + static inline u32 cache_type_cwg(void) { return (read_cpuid_cachetype() >> CTR_CWG_SHIFT) & CTR_CWG_MASK; |