* [PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs
@ 2025-08-18 8:30 Ewan Hai
2025-08-19 23:11 ` Sean Christopherson
0 siblings, 1 reply; 3+ messages in thread
From: Ewan Hai @ 2025-08-18 8:30 UTC (permalink / raw)
To: seanjc, pbonzini, tglx, mingo, bp, dave.hansen, hpa
Cc: x86, kvm, linux-kernel, ewanhai, cobechen, leoliu, lyleli
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@zhaoxin.com>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs
2025-08-18 8:30 [PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs Ewan Hai
@ 2025-08-19 23:11 ` Sean Christopherson
2025-08-20 2:03 ` Ewan Hai
0 siblings, 1 reply; 3+ messages in thread
From: Sean Christopherson @ 2025-08-19 23:11 UTC (permalink / raw)
To: Sean Christopherson, pbonzini, tglx, mingo, bp, dave.hansen, hpa,
Ewan Hai
Cc: x86, kvm, linux-kernel, ewanhai, cobechen, leoliu, lyleli
On Mon, 18 Aug 2025 04:30:34 -0400, Ewan Hai wrote:
> Bypass the Centaur-only filter for the CPUID signature leaf so that
> processing continues when the CPU vendor is Zhaoxin.
Applied to kvm-x86 misc, thanks!
[1/1] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs
https://github.com/kvm-x86/linux/commit/1f0654dc75b8
--
https://github.com/kvm-x86/linux/tree/next
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs
2025-08-19 23:11 ` Sean Christopherson
@ 2025-08-20 2:03 ` Ewan Hai
0 siblings, 0 replies; 3+ messages in thread
From: Ewan Hai @ 2025-08-20 2:03 UTC (permalink / raw)
To: Sean Christopherson, pbonzini, tglx, mingo, bp, dave.hansen, hpa
Cc: x86, kvm, linux-kernel, ewanhai, cobechen, leoliu, lyleli
On 8/20/25 7:11 AM, Sean Christopherson wrote:
>
> On Mon, 18 Aug 2025 04:30:34 -0400, Ewan Hai wrote:
>> Bypass the Centaur-only filter for the CPUID signature leaf so that
>> processing continues when the CPU vendor is Zhaoxin.
>
> Applied to kvm-x86 misc, thanks!
Thank you for your suggestions!
>
> [1/1] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs
> https://github.com/kvm-x86/linux/commit/1f0654dc75b8
>
> --
> https://github.com/kvm-x86/linux/tree/next
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2025-08-20 8:14 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2025-08-18 8:30 [PATCH v2] KVM: x86: allow CPUID 0xC000_0000 to proceed on Zhaoxin CPUs Ewan Hai
2025-08-19 23:11 ` Sean Christopherson
2025-08-20 2:03 ` Ewan Hai
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