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authorVitaly Kuznetsov <vkuznets@redhat.com>2020-05-29 15:04:06 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-01 04:26:04 -0400
commited881297338625f3799cce8774d198ef05a858e6 (patch)
tree1b19eb4d6f86cda45e523b6302bdfa3113d54a15 /tools/testing/selftests
parent929d1cfaa6926ccee28d8d4220e0b4e2defd9cd1 (diff)
selftests: kvm: introduce cpu_has_svm() check
Many tests will want to check if the CPU is Intel or AMD in guest code, add cpu_has_svm() and put it as static inline to svm_util.h. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20200529130407.57176-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r--tools/testing/selftests/kvm/include/x86_64/svm_util.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/svm_util.h b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
index cd037917fece..674151d24fcf 100644
--- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h
+++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
@@ -35,4 +35,14 @@ void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_r
void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa);
void nested_svm_check_supported(void);
+static inline bool cpu_has_svm(void)
+{
+ u32 eax = 0x80000001, ecx;
+
+ asm("cpuid" :
+ "=a" (eax), "=c" (ecx) : "0" (eax) : "ebx", "edx");
+
+ return ecx & CPUID_SVM;
+}
+
#endif /* SELFTEST_KVM_SVM_UTILS_H */