On Sun, Jul 19, 2015 at 08:26:43PM +0200, Mathias Krause wrote: > 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]> > Cc: Borislav Petkov <[email protected]> > Cc: H. Peter Anvin <[email protected]> > Cc: Ingo Molnar <[email protected]> > Cc: Thomas Gleixner <[email protected]> > --- > 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 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 */
Acked-by: Borislav Petkov <[email protected]> -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
