Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c
index 1c0dfbca87c1..bf36328f6ef9 100644
--- a/arch/x86/kernel/tsc_sync.c
+++ b/arch/x86/kernel/tsc_sync.c
@@ -112,6 +112,12 @@ void __cpuinit check_tsc_sync_source(int cpu)
         if (unsynchronized_tsc())
                 return;
 
+        if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) {
+                printk(KERN_INFO
+                       "Skipping synchronization checks as TSC is reliable.\n");
+                return;
+        }
+
         printk(KERN_INFO "checking TSC synchronization [CPU#%d -> CPU#%d]:",
                           smp_processor_id(), cpu);
 
@@ -165,7 +171,7 @@ void __cpuinit check_tsc_sync_target(void)
 {
         int cpus = 2;
 
-        if (unsynchronized_tsc())
+        if (unsynchronized_tsc() || boot_cpu_has(X86_FEATURE_TSC_RELIABLE))
                 return;
 
         /*