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KVM: selftests: Check that PV_UNHALT is cleared when HLT exiting is disabled

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KVM_FEATURE_PV_UNHALT is expected to get cleared from KVM PV feature CPUID
data when KVM_X86_DISABLE_EXITS_HLT is enabled. Add the corresponding test
to kvm_pv_test.

Note, the newly added code doesn't actually test KVM_FEATURE_PV_UNHALT and
KVM_X86_DISABLE_EXITS_HLT features.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240228101837.93642-4-vkuznets@redhat.com
[sean: add and use vcpu_cpuid_has()]
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Vitaly Kuznetsov
2024-02-28 11:18:37 +01:00
committed by Sean Christopherson
parent 4736d85f0d
commit c2585047c8
2 changed files with 48 additions and 0 deletions
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tools/testing/selftests/kvm/include/x86_64/processor.h
+9
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@@ -995,6 +995,15 @@ static inline void vcpu_set_cpuid(struct kvm_vcpu *vcpu)
vcpu_ioctl(vcpu, KVM_GET_CPUID2, vcpu->cpuid);
}
static inline bool vcpu_cpuid_has(struct kvm_vcpu *vcpu,
struct kvm_x86_cpu_feature feature)
{
struct kvm_cpuid_entry2 *entry;
entry = __vcpu_get_cpuid_entry(vcpu, feature.function, feature.index);
return *((&entry->eax) + feature.reg) & BIT(feature.bit);
}
void vcpu_set_cpuid_maxphyaddr(struct kvm_vcpu *vcpu, uint8_t maxphyaddr);
void vcpu_clear_cpuid_entry(struct kvm_vcpu *vcpu, uint32_t function);