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-rw-r--r--arch/x86/kernel/process.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 553b02f13094..b944f89c4e6e 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -525,8 +525,10 @@ static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
525 return (edx & MWAIT_EDX_C1); 525 return (edx & MWAIT_EDX_C1);
526} 526}
527 527
528bool c1e_detected;
529EXPORT_SYMBOL(c1e_detected);
530
528static cpumask_var_t c1e_mask; 531static cpumask_var_t c1e_mask;
529static int c1e_detected;
530 532
531void c1e_remove_cpu(int cpu) 533void c1e_remove_cpu(int cpu)
532{ 534{
@@ -548,12 +550,12 @@ static void c1e_idle(void)
548 u32 lo, hi; 550 u32 lo, hi;
549 551
550 rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi); 552 rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi);
553
551 if (lo & K8_INTP_C1E_ACTIVE_MASK) { 554 if (lo & K8_INTP_C1E_ACTIVE_MASK) {
552 c1e_detected = 1; 555 c1e_detected = true;
553 if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) 556 if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
554 mark_tsc_unstable("TSC halt in AMD C1E"); 557 mark_tsc_unstable("TSC halt in AMD C1E");
555 printk(KERN_INFO "System has AMD C1E enabled\n"); 558 printk(KERN_INFO "System has AMD C1E enabled\n");
556 set_cpu_cap(&boot_cpu_data, X86_FEATURE_AMDC1E);
557 } 559 }
558 } 560 }
559 561