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selftests: kvm/x86: Introduce x86_model()

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Extract the x86 model number from CPUID.01H:EAX.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220115052431.447232-6-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson 2022-01-14 21:24:30 -08:00 committed by Paolo Bonzini
parent 398f9240f9
commit 2ba9047424
1 changed files with 5 additions and 0 deletions
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5
tools/testing/selftests/kvm/include/x86_64/processor.h
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@ -378,6 +378,11 @@ static inline unsigned int x86_family(unsigned int eax)
return x86;
}
static inline unsigned int x86_model(unsigned int eax)
{
return ((eax >> 12) & 0xf0) | ((eax >> 4) & 0x0f);
}
struct kvm_x86_state *vcpu_save_state(struct kvm_vm *vm, uint32_t vcpuid);
void vcpu_load_state(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_x86_state *state);