diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-10-31 15:51:02 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-11-03 15:24:14 +0000 |
| commit | ddd25ad1fde8456810dee1b26a870395bcd6339d (patch) | |
| tree | 22f1283f3d6ee3844b6d273f90d43314235cc201 /arch/arm64/include/asm/cpufeature.h | |
| parent | 1fc5dce78ad15dce2f23336d339e5f7290b61e19 (diff) | |
arm64/sve: Kconfig update and conditional compilation support
This patch adds CONFIG_ARM64_SVE to control building of SVE support
into the kernel, and adds a stub predicate system_supports_sve() to
control conditional compilation and runtime SVE support.
system_supports_sve() just returns false for now: it will be
replaced with a non-trivial implementation in a later patch, once
SVE support is complete enough to be enabled safely.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@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, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 428ee1f2468c..4ea3441a8fa7 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -262,6 +262,11 @@ static inline bool system_uses_ttbr0_pan(void) !cpus_have_const_cap(ARM64_HAS_PAN); } +static inline bool system_supports_sve(void) +{ + return false; +} + #endif /* __ASSEMBLY__ */ #endif |