diff options
author | Mathias Krause <[email protected]> | 2015-07-24 09:15:11 +0200 |
---|---|---|
committer | Ingo Molnar <[email protected]> | 2015-07-31 10:34:07 +0200 |
commit | b1c599b8ff80ea79b9f8277a3f9f36a7b0cfedce (patch) | |
tree | c031486fbbb4ecb7618e5dfb2a246a9d9bb8f048 | |
parent | b51ef52df71cb28e9d90cd1d48b79bf19f0bab06 (diff) |
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 <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Aaron Lu <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Dirk Brandewie <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Josh Triplett <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
-rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 3d6606fb97d0..4b11974b4ea7 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 */ |