From: Haibo Xu <[email protected]> KVM_CAP_ARM_EL2 must be supported by the cpu to enable ARM_FEATURE_EL2. In case the host does support NV, expose the feature.
Signed-off-by: Haibo Xu <[email protected]> Signed-off-by: Miguel Luis <[email protected]> Signed-off-by: Eric Auger <[email protected]> --- v1 -> v2: - remove isar_feature_aa64_aa32_el2 modif in target/arm/cpu.h [Richard] and use el2_supported in kvm_arch_init_vcpu --- target/arm/kvm.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 0996866afe..a08bc68a3f 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -238,6 +238,7 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) */ int fdarray[3]; bool sve_supported; + bool el2_supported; bool pmu_supported = false; uint64_t features = 0; int err; @@ -268,6 +269,14 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) init.features[0] |= 1 << KVM_ARM_VCPU_SVE; } + /* + * Ask for EL2 if supported. + */ + el2_supported = kvm_arm_el2_supported(); + if (el2_supported) { + init.features[0] |= 1 << KVM_ARM_VCPU_HAS_EL2; + } + /* * Ask for Pointer Authentication if supported, so that we get * the unsanitized field values for AA64ISAR1_EL1. @@ -449,6 +458,10 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) features |= 1ULL << ARM_FEATURE_PMU; features |= 1ULL << ARM_FEATURE_GENERIC_TIMER; + if (el2_supported) { + features |= 1ULL << ARM_FEATURE_EL2; + } + ahcf->features = features; return true; @@ -1912,6 +1925,9 @@ int kvm_arch_init_vcpu(CPUState *cs) cpu->kvm_init_features[0] |= (1 << KVM_ARM_VCPU_PTRAUTH_ADDRESS | 1 << KVM_ARM_VCPU_PTRAUTH_GENERIC); } + if (kvm_arm_el2_supported()) { + cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_HAS_EL2; + } /* Do KVM_ARM_VCPU_INIT ioctl */ ret = kvm_arm_vcpu_init(cpu); -- 2.41.0
