Commit 08833719 authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: selftests: Assert that vcpu->cpuid is non-NULL when getting CPUID entries 

Add a sanity check in __vcpu_get_cpuid_entry() to provide a friendlier
error than a segfault when a test developer tries to use a vCPU CPUID
helper on a barebones vCPU.

Link: https://lore.kernel.org/r/20241128013424.4096668-8-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent bf4dfc3a

tools/testing/selftests/kvm/include/x86/processor.h

+2 −0
Original line number Diff line number Diff line
@@ -1014,6 +1014,8 @@ static inline struct kvm_cpuid_entry2 *__vcpu_get_cpuid_entry(struct kvm_vcpu *v 
							      uint32_t function,

							      uint32_t index)

{

	TEST_ASSERT(vcpu->cpuid, "Must do vcpu_init_cpuid() first (or equivalent)");



	return (struct kvm_cpuid_entry2 *)get_cpuid_entry(vcpu->cpuid,

							  function, index);

}