Commit-ID: c3b83598c1eeb1507603b461f5843ec2a49e3033 Gitweb: http://git.kernel.org/tip/c3b83598c1eeb1507603b461f5843ec2a49e3033 Author: Borislav Petkov <b...@suse.de> AuthorDate: Sun, 9 Jun 2013 12:07:30 +0200 Committer: H. Peter Anvin <h...@linux.intel.com> CommitDate: Thu, 20 Jun 2013 17:06:07 -0700
x86, cpu: Add a synthetic, always true, cpu feature This will be used in alternatives later as an always-replace flag. Signed-off-by: Borislav Petkov <b...@suse.de> Link: http://lkml.kernel.org/r/1370772454-6106-2-git-send-email...@alien8.de Signed-off-by: H. Peter Anvin <h...@linux.intel.com> --- arch/x86/include/asm/cpufeature.h | 2 +- arch/x86/kernel/cpu/common.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index e99ac27..043d61e 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -92,7 +92,7 @@ #define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* "" Lfence synchronizes RDTSC */ #define X86_FEATURE_11AP (3*32+19) /* "" Bad local APIC aka 11AP */ #define X86_FEATURE_NOPL (3*32+20) /* The NOPL (0F 1F) instructions */ - /* 21 available, was AMD_C1E */ +#define X86_FEATURE_ALWAYS (3*32+21) /* "" Always-present feature */ #define X86_FEATURE_XTOPOLOGY (3*32+22) /* cpu topology enum extensions */ #define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */ #define X86_FEATURE_NONSTOP_TSC (3*32+24) /* TSC does not stop in C states */ diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index d4dd993..d388ce1 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -723,6 +723,8 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) if (this_cpu->c_bsp_init) this_cpu->c_bsp_init(c); + + setup_force_cpu_cap(X86_FEATURE_ALWAYS); } void __init early_cpu_init(void) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
