linux-kernel - [tip: x86/urgent] x86/cpufeatures: Make AVX-VNNI depend on AVX

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Message-ID: <174014442773.10177.2930248397076157689.tip-bot2@tip-bot2>
Date: Fri, 21 Feb 2025 13:27:07 -0000
From: "tip-bot2 for Eric Biggers" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Eric Biggers <ebiggers@...gle.com>, Ingo Molnar <mingo@...nel.org>,
 Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/urgent] x86/cpufeatures: Make AVX-VNNI depend on AVX

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     517120728484df1ab8b71cba8d2cad19f52f18a1
Gitweb:        https://git.kernel.org/tip/517120728484df1ab8b71cba8d2cad19f52f18a1
Author:        Eric Biggers <ebiggers@...gle.com>
AuthorDate:    Wed, 19 Feb 2025 22:01:24 -08:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 21 Feb 2025 14:19:16 +01:00

x86/cpufeatures: Make AVX-VNNI depend on AVX

The 'noxsave' boot option disables support for AVX, but support for the
AVX-VNNI feature was still declared on CPUs that support it.  Fix this.

Signed-off-by: Eric Biggers <ebiggers@...gle.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Link: https://lore.kernel.org/r/20250220060124.89622-1-ebiggers@kernel.org
---
 arch/x86/kernel/cpu/cpuid-deps.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/cpu/cpuid-deps.c b/arch/x86/kernel/cpu/cpuid-deps.c
index 8bd8411..df838e3 100644
--- a/arch/x86/kernel/cpu/cpuid-deps.c
+++ b/arch/x86/kernel/cpu/cpuid-deps.c
@@ -45,6 +45,7 @@ static const struct cpuid_dep cpuid_deps[] = {
 	{ X86_FEATURE_AES,			X86_FEATURE_XMM2      },
 	{ X86_FEATURE_SHA_NI,			X86_FEATURE_XMM2      },
 	{ X86_FEATURE_GFNI,			X86_FEATURE_XMM2      },
+	{ X86_FEATURE_AVX_VNNI,			X86_FEATURE_AVX       },
 	{ X86_FEATURE_FMA,			X86_FEATURE_AVX       },
 	{ X86_FEATURE_VAES,			X86_FEATURE_AVX       },
 	{ X86_FEATURE_VPCLMULQDQ,		X86_FEATURE_AVX       },