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From: "Hao Xiang" <hao.xiang@linux.alibaba.com>
To: "kvm" <kvm@vger.kernel.org>,
	"linux-kernel" <linux-kernel@vger.kernel.org>,
	"xianghao.xiang" <xianghao.xiang@alibaba-inc.com>,
	"hao.xiang" <hao.xiang@linux.alibaba.com>,
	"zhao1.liu" <zhao1.liu@intel.com>, "seanjc" <seanjc@google.com>,
	"pbonzini" <pbonzini@redhat.com>,
	"shannon.zhao" <shannon.zhao@linux.alibaba.com>
Subject: [PATCH] i386/cpu: Rename CPUID feature bit AVX10_VNNI_INT to AVX10_V1_AUX
Date: Tue, 08 Sep 2026 14:13:17 +0800	[thread overview]
Message-ID: <45146bc1-0d78-46de-8bd8-cb1ecba49fe2.hao.xiang@linux.alibaba.com> (raw)

CPUID feature bit AVX10_VNNI_INT is renamed to AVX10_V1_AUX to account
for additional AVX10.2 isntructions sep-arated to have ”OR” sensitivity
for platforms which may not support all of AVX10.2[*]. This CPUID bit now
applies to the following VNNI instructions: VPDPB[SU,UU,SS]D[,S]
VPDPW[SU,US,UU]D[,S], as well as the following convert in-structions:
VCVT[,2]PH2[B,H]F8[,S], VCVT2PS2PHX, VCVT-BIASPH2[B,H]F8[,S],
VCVTHF82PH.

[*]: Intel® Advanced Vector Extensions 10.2 Architecture Specification
      (rev 7.0).

Signed-off-by: Hao Xiang <hao.xiang@linux.alibaba.com>
---
  arch/x86/kvm/cpuid.c         | 2 +-
  arch/x86/kvm/reverse_cpuid.h | 2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 851f151efb35..1e5bf6fff9c9 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1095,7 +1095,7 @@ void kvm_initialize_cpu_caps(void)
      );

      kvm_cpu_cap_init(CPUID_24_1_ECX,
-        F(AVX10_VNNI_INT),
+        F(AVX10_V1_AUX),
      );

      kvm_cpu_cap_init(CPUID_8000_0001_ECX,
diff --git a/arch/x86/kvm/reverse_cpuid.h b/arch/x86/kvm/reverse_cpuid.h
index 2ad25781cefb..89345af0f7ad 100644
--- a/arch/x86/kvm/reverse_cpuid.h
+++ b/arch/x86/kvm/reverse_cpuid.h
@@ -66,7 +66,7 @@
  #define X86_FEATURE_AVX10_512 KVM_X86_FEATURE(CPUID_24_0_EBX, 18)

  /* Intel-defined sub-features, CPUID level 0x00000024:1 (ECX) */
-#define X86_FEATURE_AVX10_VNNI_INT KVM_X86_FEATURE(CPUID_24_1_ECX, 2)
+#define X86_FEATURE_AVX10_V1_AUX    KVM_X86_FEATURE(CPUID_24_1_ECX, 2)

  /* CPUID level 0x80000007 (EDX). */
  #define KVM_X86_FEATURE_CONSTANT_TSC 
KVM_X86_FEATURE(CPUID_8000_0007_EDX, 8)
--
2.32.0.3.g01195cf9f

             reply	other threads:[~2026-09-08  6:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-08  6:13 Hao Xiang [this message]
2026-09-08  7:10 ` zhao1.liu

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