linux-kernel - [PATCH v1] x86/cpuid: Add AMX and SPEC

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Message-ID: <20240924170128.2611854-1-ak@linux.intel.com>
Date: Tue, 24 Sep 2024 10:01:28 -0700
From: Andi Kleen <ak@...ux.intel.com>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH v1] x86/cpuid: Add AMX and SPEC_CTRL dependencies

Add some missing dependencies to the CPUID dependency table.

All the AMX features depend on AMX_TILE.
All the SPEC_CTRL features depend on SPEC_CTRL.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 arch/x86/kernel/cpu/cpuid-deps.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/kernel/cpu/cpuid-deps.c b/arch/x86/kernel/cpu/cpuid-deps.c
index 8bd84114c2d9..15c5ad01d1e2 100644
--- a/arch/x86/kernel/cpu/cpuid-deps.c
+++ b/arch/x86/kernel/cpu/cpuid-deps.c
@@ -83,6 +83,10 @@ static const struct cpuid_dep cpuid_deps[] = {
 	{ X86_FEATURE_AMX_TILE,			X86_FEATURE_XFD       },
 	{ X86_FEATURE_SHSTK,			X86_FEATURE_XSAVES    },
 	{ X86_FEATURE_FRED,			X86_FEATURE_LKGS      },
+	{ X86_FEATURE_AMX_FP16,			X86_FEATURE_AMX_TILE  },
+	{ X86_FEATURE_AMX_BF16,			X86_FEATURE_AMX_TILE  },
+	{ X86_FEATURE_AMX_INT8,			X86_FEATURE_AMX_TILE  },
+	{ X86_FEATURE_SPEC_CTRL_SSBD,		X86_FEATURE_SPEC_CTRL },
 	{}
 };
 
-- 
2.46.1