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Message-Id: <20220614200707.3315957-42-seanjc@google.com>
Date: Tue, 14 Jun 2022 20:07:06 +0000
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Sean Christopherson <seanjc@...gle.com>,
Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v2 41/42] 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@...gle.com>
---
tools/testing/selftests/kvm/lib/x86_64/processor.c | 10 ++--------
1 file 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 d606ee2d970a..936ad738ad4a 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]);
}
--
2.36.1.476.g0c4daa206d-goog
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