Messages in this thread | | | Date | Fri, 14 Nov 2014 20:56:45 +0300 | From | Sergei Shtylyov <> | Subject | Re: [PATCH 05/11] x86, mpx: add MPX to disaabled features |
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Hello.
On 11/14/2014 06:18 PM, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@linux.intel.com>
> This allows us to use cpu_feature_enabled(X86_FEATURE_MPX) as > both a runtime and compile-time check.
> When CONFIG_X86_INTEL_MPX is disabled, > cpu_feature_enabled(X86_FEATURE_MPX) will evaluate at > compile-time to 0. If CONFIG_X86_INTEL_MPX=y, then the cpuid > flag will be checked at runtime.
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> > Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> > ---
> b/arch/x86/include/asm/disabled-features.h | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-)
> diff -puN arch/x86/include/asm/disabled-features.h~mpx-v11-add-MPX-to-disaabled-features arch/x86/include/asm/disabled-features.h > --- a/arch/x86/include/asm/disabled-features.h~mpx-v11-add-MPX-to-disaabled-features 2014-11-14 07:06:22.297610243 -0800 > +++ b/arch/x86/include/asm/disabled-features.h 2014-11-14 07:06:22.300610378 -0800 [...] > @@ -34,6 +40,6 @@ > #define DISABLED_MASK6 0 > #define DISABLED_MASK7 0 > #define DISABLED_MASK8 0 > -#define DISABLED_MASK9 0 > +#define DISABLED_MASK9 (DISABLE_MPX)
These parens are not really needed. Sorry to be a PITA and not saying this before.
[...]
WBR, Sergei
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