Commit fbc8a4e1 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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: default avatarMarc Zyngier <maz@kernel.org>
parent 7c7d56fc

arch/arm64/kernel/cpufeature.c

+7 −0
Original line number Diff line number Diff line
@@ -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",

arch/arm64/tools/cpucaps

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ HAS_EPAN 
HAS_EVT

HAS_FPMR

HAS_FGT

HAS_FGT2

HAS_FPSIMD

HAS_GCS

HAS_GENERIC_AUTH