diff options
| author |   Sean Christopherson <seanjc@google.com> | 2022-06-14 20:07:06 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2022-07-13 18:14:25 -0700 |
| commit | 12a985aeb40691a27befb0ae99707d0322b4bd8e (patch) | |
| tree | bd489d38ad9098df453cb304fa07e9be11b77a31 | |
| parent | KVM: selftests: Clean up requirements for XFD-aware XSAVE features (diff) | |
| download | linux-dev-12a985aeb40691a27befb0ae99707d0322b4bd8e.tar.xz linux-dev-12a985aeb40691a27befb0ae99707d0322b4bd8e.zip | |
KVM: selftests: Use the common cpuid() helper in cpu_vendor_string_is()
Use cpuid() to get CPUID.0x0 in cpu_vendor_string_is(), thus eliminating
the last open coded usage of CPUID (ignoring debug_regs.c, which emits
CPUID from the guest to trigger a VM-Exit and doesn't actually care about
the results of CPUID).
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220614200707.3315957-42-seanjc@google.com
| -rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/processor.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 92a047cd1cd5..f35626df1dea 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -1011,15 +1011,9 @@ void kvm_x86_state_cleanup(struct kvm_x86_state *state) static bool cpu_vendor_string_is(const char *vendor) { const uint32_t *chunk = (const uint32_t *)vendor; - int eax, ebx, ecx, edx; - const int leaf = 0; - - __asm__ __volatile__( - "cpuid" - : /* output */ "=a"(eax), "=b"(ebx), - "=c"(ecx), "=d"(edx) - : /* input */ "0"(leaf), "2"(0)); + uint32_t eax, ebx, ecx, edx; + cpuid(0, &eax, &ebx, &ecx, &edx); return (ebx == chunk[0] && edx == chunk[1] && ecx == chunk[2]); } |