From: Xiaoyao Li <xiaoyao.li@intel.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Kiryl Shutsemau <kas@kernel.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-coco@lists.linux.dev, Binbin Wu <binbin.wu@linux.intel.com>,
Changyuan Lyu <changyuanl@google.com>,
Sashiko <sashiko-bot@kernel.org>
Subject: Re: [PATCH v2 1/3] x86/cpuid: Mark CPUID function 0x23 as being indexed
Date: Fri, 23 Oct 2026 16:03:59 +0800 [thread overview]
Message-ID: <dbc686a7-35f8-40b6-9f45-d8f05edc4881@intel.com> (raw)
In-Reply-To: <20261022210134.612848-2-seanjc@google.com>
On 10/23/2026 5:01 AM, Sean Christopherson wrote:
> Add function 0x23 to the set of CPUID functions that are indexed, as per
> the SDM and the many sub-leafs defined in leaf_types.h.
>
> Reported-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
> Closes: https://lore.kernel.org/all/213d614fe73e183a230c8f4e0c8fa1cc3d45df39.camel@intel.com
> Cc: stable@vger.kernel.org
> Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@Intel.com>
> ---
> arch/x86/include/asm/cpuid/api.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/include/asm/cpuid/api.h b/arch/x86/include/asm/cpuid/api.h
> index 82eddfa2347b..25b22b173f2a 100644
> --- a/arch/x86/include/asm/cpuid/api.h
> +++ b/arch/x86/include/asm/cpuid/api.h
> @@ -181,6 +181,7 @@ static __always_inline bool cpuid_function_is_indexed(u32 function)
> case 0x1d:
> case 0x1e:
> case 0x1f:
> + case 0x23:
> case 0x24:
> case 0x8000001d:
> return true;
next prev parent reply other threads:[~2026-10-23 8:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-22 21:01 [PATCH v2 0/3] x86/cpuid: KVM: TDX CPUID fixes Sean Christopherson
2026-10-22 21:01 ` [PATCH v2 1/3] x86/cpuid: Mark CPUID function 0x23 as being indexed Sean Christopherson
2026-10-23 1:58 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2026-10-23 8:03 ` Xiaoyao Li [this message]
2026-10-22 21:01 ` [PATCH v2 2/3] KVM: TDX: Set SIGNIFCANT_INDEX flag as appropriate when filling CPUID entries Sean Christopherson
2026-10-23 2:45 ` Binbin Wu
2026-10-24 2:03 ` Sean Christopherson
2026-10-22 21:01 ` [PATCH v2 3/3] KVM: TDX: Reject KVM_TDX_INIT_VM if indexed CPUID functions don't match Sean Christopherson
2026-10-23 3:05 ` Binbin Wu
2026-10-23 8:11 ` Xiaoyao Li
2026-10-23 1:25 ` [PATCH v2 0/3] x86/cpuid: KVM: TDX CPUID fixes Edgecombe, Rick P
2026-10-23 2:01 ` Edgecombe, Rick P
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