KVM_CAP_HYPERV_DIRECT_TLBFLUSH is only reported when KVM runs on top of
Hyper-V and hyperv_evmcs/hyperv_svm_test don't need that, these tests check
that the feature is properly emulated for Hyper-V on KVM guests. There's no
corresponding CAP for that, the feature is reported in
KVM_GET_SUPPORTED_HV_CPUID.
Hyper-V specific CPUIDs are not reported by KVM_GET_SUPPORTED_CPUID,
implement dedicated kvm_hv_cpu_has() helper to do the job.
Fixes: 6dac1195181c ("KVM: selftests: Make Hyper-V tests explicitly require KVM Hyper-V support")
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
.../testing/selftests/kvm/include/x86_64/hyperv.h | 14 ++++++++++++++
tools/testing/selftests/kvm/lib/x86_64/hyperv.c | 8 ++++++++
tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c | 2 +-
.../testing/selftests/kvm/x86_64/hyperv_svm_test.c | 2 +-
4 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
index a2e7cf7ee0ad..6849e2552f1b 100644
--- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h
+++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
@@ -186,6 +186,18 @@
#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED \
KVM_X86_CPU_FEATURE(HYPERV_CPUID_ENLIGHTMENT_INFO, 0, EAX, 14)
+/* HYPERV_CPUID_NESTED_FEATURES.EAX */
+#define HV_X64_NESTED_DIRECT_FLUSH \
+ KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 17)
+#define HV_X64_NESTED_GUEST_MAPPING_FLUSH \
+ KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 18)
+#define HV_X64_NESTED_MSR_BITMAP \
+ KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EAX, 19)
+
+/* HYPERV_CPUID_NESTED_FEATURES.EBX */
+#define HV_X64_NESTED_EVMCS1_PERF_GLOBAL_CTRL \
+ KVM_X86_CPU_FEATURE(HYPERV_CPUID_NESTED_FEATURES, 0, EBX, 0)
+
/* HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES.EAX */
#define HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING \
KVM_X86_CPU_FEATURE(HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES, 0, EAX, 1)
@@ -347,4 +359,6 @@ const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void);
const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu);
void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu);
+bool kvm_hv_cpu_has(struct kvm_x86_cpu_feature feature);
+
#endif /* !SELFTEST_KVM_HYPERV_H */
diff --git a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c b/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
index b4a5e4ad7105..15bc8cd583aa 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
@@ -67,6 +67,14 @@ const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu)
return cpuid;
}
+bool kvm_hv_cpu_has(struct kvm_x86_cpu_feature feature)
+{
+ if (!kvm_has_cap(KVM_CAP_SYS_HYPERV_CPUID))
+ return false;
+
+ return kvm_cpuid_has(kvm_get_supported_hv_cpuid(), feature);
+}
+
struct hyperv_test_pages *vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm,
vm_vaddr_t *p_hv_pages_gva)
{
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c
index e192720bfe14..74cf19661309 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c
@@ -242,7 +242,7 @@ int main(int argc, char *argv[])
TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX));
TEST_REQUIRE(kvm_has_cap(KVM_CAP_NESTED_STATE));
TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS));
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_DIRECT_TLBFLUSH));
+ TEST_REQUIRE(kvm_hv_cpu_has(HV_X64_NESTED_DIRECT_FLUSH));
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
index b987a3d79715..0ddb63229bcb 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
@@ -157,7 +157,7 @@ int main(int argc, char *argv[])
int stage;
TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));
- TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_DIRECT_TLBFLUSH));
+ TEST_REQUIRE(kvm_hv_cpu_has(HV_X64_NESTED_DIRECT_FLUSH));
/* Create VM */
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
--
2.46.0
