diff options
| author | H. Peter Anvin (Intel) <hpa@zytor.com> | 2025-03-05 10:47:22 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-19 11:15:11 +0100 |
| commit | 841326332bcb13ae4e6cd456350bf566a402b45e (patch) | |
| tree | 52b6665c43cefdcb9be299062a31c66c27f5f4a7 /arch/x86/boot/cpuflags.c | |
| parent | 3d37d9396eb37a62ba75bf8f3bd934500cf64bf0 (diff) | |
x86/cpufeatures: Generate the <asm/cpufeaturemasks.h> header based on build config
Introduce an AWK script to auto-generate the <asm/cpufeaturemasks.h> header
with required and disabled feature masks based on <asm/cpufeatures.h>
and the current build config.
Thus for any CPU feature with a build config, e.g., X86_FRED, simply add:
config X86_DISABLED_FEATURE_FRED
def_bool y
depends on !X86_FRED
to arch/x86/Kconfig.cpufeatures, instead of adding a conditional CPU
feature disable flag, e.g., DISABLE_FRED.
Lastly, the generated required and disabled feature masks will be added to
their corresponding feature masks for this particular compile-time
configuration.
[ Xin: build integration improvements ]
[ mingo: Improved changelog and comments ]
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250305184725.3341760-3-xin@zytor.com
Diffstat (limited to 'arch/x86/boot/cpuflags.c')
| -rw-r--r-- | arch/x86/boot/cpuflags.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/boot/cpuflags.c b/arch/x86/boot/cpuflags.c index d75237ba7ce9..0cabdacb2a2f 100644 --- a/arch/x86/boot/cpuflags.c +++ b/arch/x86/boot/cpuflags.c @@ -3,7 +3,6 @@ #include "bitops.h" #include <asm/processor-flags.h> -#include <asm/required-features.h> #include <asm/msr-index.h> #include "cpuflags.h" |