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| author | Haibo Xu <haibo.xu@linaro.org> | 2025-07-07 18:40:29 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-07-10 11:41:07 +0100 |
| commit | 4ee1efc9871936e2561212e409ad094c2ae83cad (patch) | |
| tree | 6a05d1b84e940a79193821bc3f8978769337e151 | |
| parent | 776aac5653cd9b072c735fcd65a3e58bd59370f4 (diff) | |
| download | qemu-4ee1efc9871936e2561212e409ad094c2ae83cad.zip qemu-4ee1efc9871936e2561212e409ad094c2ae83cad.tar.gz qemu-4ee1efc9871936e2561212e409ad094c2ae83cad.tar.bz2 | |
target/arm: Enable feature ARM_FEATURE_EL2 if EL2 is supported
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 <haibo.xu@linaro.org>
Signed-off-by: Miguel Luis <miguel.luis@oracle.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250707164129.1167837-4-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/arm/kvm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 9fdf354..6672344 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -251,6 +251,7 @@ 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; @@ -271,6 +272,14 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) } /* + * 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. */ @@ -423,6 +432,10 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) features |= 1ULL << ARM_FEATURE_AARCH64; features |= 1ULL << ARM_FEATURE_GENERIC_TIMER; + if (el2_supported) { + features |= 1ULL << ARM_FEATURE_EL2; + } + ahcf->features = features; return true; @@ -1888,6 +1901,9 @@ 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 (cpu->has_el2 && 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); |