[PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs

[Ewan Hai]

Bypass the Centaur-only filter for the CPUID signature leaf so that
processing continues when the CPU vendor is Zhaoxin.

Signed-off-by: Ewan Hai <ewanhai-oc@xxxxxxxxxxx>
---
 arch/x86/kvm/cpuid.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index e2836a255b16..bee8c869259f 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1820,7 +1820,8 @@ static int get_cpuid_func(struct kvm_cpuid_array *array, u32 func,
 	int r;
 
 	if (func == CENTAUR_CPUID_SIGNATURE &&
-	    boot_cpu_data.x86_vendor != X86_VENDOR_CENTAUR)
+	    boot_cpu_data.x86_vendor != X86_VENDOR_CENTAUR &&
+	    boot_cpu_data.x86_vendor != X86_VENDOR_ZHAOXIN)
 		return 0;
 
 	r = do_cpuid_func(array, func, type);
-- 
2.34.1