diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/setup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index 619af2e2fa2..a570c81c831 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -838,6 +838,8 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) if (cpu_has_ds) { unsigned int l1, l2; rdmsr(MSR_IA32_MISC_ENABLE, l1, l2); + if (!(l1 & (1<<11))) + set_bit(X86_FEATURE_BTS, c->x86_capability); if (!(l1 & (1<<12))) set_bit(X86_FEATURE_PEBS, c->x86_capability); } |