Commit-ID: b1c599b8ff80ea79b9f8277a3f9f36a7b0cfedce Gitweb: http://git.kernel.org/tip/b1c599b8ff80ea79b9f8277a3f9f36a7b0cfedce Author: Mathias Krause <minipli@xxxxxxxxxxxxxx> AuthorDate: Fri, 24 Jul 2015 09:15:11 +0200 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Fri, 31 Jul 2015 10:34:07 +0200 x86/cpufeature: Add feature bit for Intel's Silicon Debug CPUID bit Add a CPUID feature bit for the SDBG (Silicon Debug) CPU feature found on recent Intel systems starting with Haswell. Using the IA32_DEBUG_INTERFACE MSR (index C80H) one can at least detect if SDBG has been enabled by the firmware and if it has been used or not. Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Cc: Aaron Lu <aaron.lu@xxxxxxxxx> Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Cc: Dirk Brandewie <dirk.j.brandewie@xxxxxxxxx> Cc: H. Peter Anvin <hpa@xxxxxxxxx> Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1437330403-12102-1-git-send-email-minipli@xxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- arch/x86/include/asm/cpufeature.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 3d6606f..4b11974 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -119,6 +119,7 @@ #define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */ #define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */ #define X86_FEATURE_CID ( 4*32+10) /* Context ID */ +#define X86_FEATURE_SDBG ( 4*32+11) /* Silicon Debug */ #define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */ #define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B */ #define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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