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selftests: kvm/x86: Parameterize the CPUID vendor string check

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Refactor is_intel_cpu() to make it easier to reuse the bulk of the
code for other vendors in the future.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220115052431.447232-3-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson 2022-01-14 21:24:27 -08:00 committed by Paolo Bonzini
parent 7ff775aca4
commit b33b9c4078
1 changed files with 7 additions and 3 deletions
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10
tools/testing/selftests/kvm/lib/x86_64/processor.c
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@ -1253,10 +1253,10 @@ void kvm_x86_state_cleanup(struct kvm_x86_state *state)
free(state);
}
bool is_intel_cpu(void)
static bool cpu_vendor_string_is(const char *vendor)
{
const uint32_t *chunk = (const uint32_t *)vendor;
int eax, ebx, ecx, edx;
const uint32_t *chunk;
const int leaf = 0;
__asm__ __volatile__(
@ -1265,10 +1265,14 @@ bool is_intel_cpu(void)
"=c"(ecx), "=d"(edx)
: /* input */ "0"(leaf), "2"(0));
chunk = (const uint32_t *)("GenuineIntel");
return (ebx == chunk[0] && edx == chunk[1] && ecx == chunk[2]);
}
bool is_intel_cpu(void)
{
return cpu_vendor_string_is("GenuineIntel");
}
uint32_t kvm_get_cpuid_max_basic(void)
{
return kvm_get_supported_cpuid_entry(0)->eax;