diff mbox series

[v3,2/6] selftests: kvm/x86: Parameterize the CPUID vendor string check

Message ID 20220115052431.447232-3-jmattson@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: x86/pmu: Use binary search to check filtered events | expand

Commit Message

Jim Mattson Jan. 15, 2022, 5:24 a.m. UTC 
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>
---
 tools/testing/selftests/kvm/lib/x86_64/processor.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index eef7b34756d5..355a3f6f1970 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -1198,10 +1198,10 @@  void vcpu_load_state(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_x86_state *s
 	}
 }
 
-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__(
@@ -1210,10 +1210,14 @@  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;