x86: Implement support to synchronize RDTSC with LFENCE on Intel CPUs

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / setup_64.c

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 2139aa6ac4693bdf92176b1311288d4e2dc22002..bc7758ea06af54644773fd2f03857ca724dcd38b 100644 (file)
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -888,10 +888,7 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
        if (c->x86 == 6)
                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
-       if (c->x86 == 15)
-               set_cpu_cap(c, X86_FEATURE_SYNC_RDTSC);
-       else
-               clear_cpu_cap(c, X86_FEATURE_SYNC_RDTSC);
+       set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
        c->x86_max_cores = intel_num_cpu_cores(c);
 
        srat_detect_node();