diff options
| author | Marc Zyngier <maz@kernel.org> | 2025-04-22 19:23:41 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-05-06 17:35:09 +0100 |
| commit | fbc8a4e137e5673600ec276b06ca31a46967167b (patch) | |
| tree | 95fcd714886105d7644cffa2e0db33efaa2d1c46 | |
| parent | 7c7d56fcebd0c029c73c41d8daba49f9787eb9c2 (diff) | |
arm64: Add FEAT_FGT2 capability
As we will eventually have to context-switch the FEAT_FGT2 registers
in KVM (something that has been completely ignored so far), add
a new cap that we will be able to check for.
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kernel/cpufeature.c | 7 | ||||
| -rw-r--r-- | arch/arm64/tools/cpucaps | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9c4d6d552b25..bb6058c7d144 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2876,6 +2876,13 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .matches = has_cpuid_feature, ARM64_CPUID_FIELDS(ID_AA64MMFR0_EL1, FGT, IMP) }, + { + .desc = "Fine Grained Traps 2", + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .capability = ARM64_HAS_FGT2, + .matches = has_cpuid_feature, + ARM64_CPUID_FIELDS(ID_AA64MMFR0_EL1, FGT, FGT2) + }, #ifdef CONFIG_ARM64_SME { .desc = "Scalable Matrix Extension", diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 772c1b008e43..39b154d2198f 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -28,6 +28,7 @@ HAS_EPAN HAS_EVT HAS_FPMR HAS_FGT +HAS_FGT2 HAS_FPSIMD HAS_GCS HAS_GENERIC_AUTH |