[PATCH v1] x86/cpuid: Add AMX and SPEC_CTRL dependencies

[PATCH v1] x86/cpuid: Add AMX and SPEC_CTRL dependencies

[Andi Kleen]

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@linux.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

[tip: x86/cpu] x86/cpuid: Add AMX and SPEC_CTRL dependencies

[tip-bot2 for Andi Kleen]

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

Commit-ID:     e37aa1211fbfeb9d5e79f4a4b0da898e6d0d53bb
Gitweb:        https://git.kernel.org/tip/e37aa1211fbfeb9d5e79f4a4b0da898e6d0d53bb
Author:        Andi Kleen <ak@linux.intel.com>
AuthorDate:    Tue, 24 Sep 2024 10:01:28 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Sun, 06 Apr 2025 19:54:35 +02:00

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

[ mingo: Keep the AMX part of the table grouped ... ]

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://lore.kernel.org/r/20240924170128.2611854-1-ak@linux.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 a2fbea0..94c062c 100644
--- a/arch/x86/kernel/cpu/cpuid-deps.c
+++ b/arch/x86/kernel/cpu/cpuid-deps.c
@@ -82,8 +82,12 @@ static const struct cpuid_dep cpuid_deps[] = {
 	{ X86_FEATURE_XFD,			X86_FEATURE_XSAVES    },
 	{ X86_FEATURE_XFD,			X86_FEATURE_XGETBV1   },
 	{ X86_FEATURE_AMX_TILE,			X86_FEATURE_XFD       },
+	{ 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_SHSTK,			X86_FEATURE_XSAVES    },
 	{ X86_FEATURE_FRED,			X86_FEATURE_LKGS      },
+	{ X86_FEATURE_SPEC_CTRL_SSBD,		X86_FEATURE_SPEC_CTRL },
 	{}
 };