| Message ID | 20200721161231.6019-1-o8@vmm.dev (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 898ec52d2ba05915aaedcdb21bff2e944c883cb8 |
| Headers | show |
| Series | x86/xen/time: set the X86_FEATURE_TSC_KNOWN_FREQ flag in xen_tsc_khz() | expand |
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index c8897aad13cd..91f5b330dcc6 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -39,6 +39,7 @@ static unsigned long xen_tsc_khz(void) struct pvclock_vcpu_time_info *info = &HYPERVISOR_shared_info->vcpu_info[0].time; + setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ); return pvclock_tsc_khz(info); }
If the TSC frequency is known from the pvclock page, the TSC frequency does not need to be recalibrated. We can avoid recalibration by setting X86_FEATURE_TSC_KNOWN_FREQ. Signed-off-by: Hayato Ohhashi <o8@vmm.dev> --- arch/x86/xen/time.c | 1 + 1 file changed, 1 insertion(+)