diff options
| author | Keir Fraser <keir.fraser@citrix.com> | 2008-05-24 09:27:03 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-05-24 09:27:03 +0100 |
| commit | e1845bbe732b5ad5755f0f3a93fb6ea85919e8a2 (patch) | |
| tree | fbdbe843c34d11b19ffc3fef6c6304103a1e7bc3 /xen/arch/x86/hvm/pmtimer.c | |
| parent | d0f28d825eafe00591d7b80b8de26e4fd783d924 (diff) | |
| download | xen-e1845bbe732b5ad5755f0f3a93fb6ea85919e8a2.tar.gz xen-e1845bbe732b5ad5755f0f3a93fb6ea85919e8a2.tar.bz2 xen-e1845bbe732b5ad5755f0f3a93fb6ea85919e8a2.zip | |
hvm: Build guest timers on monotonic system time.
Move hvm platform timers from underlying physical CPU TSC to Xen
system time and ensure domain-wide monotonicity. TSC on many systems
may skew between processors leading to 'time going backwards' messages
from some guests.
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'xen/arch/x86/hvm/pmtimer.c')
| -rw-r--r-- | xen/arch/x86/hvm/pmtimer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/pmtimer.c b/xen/arch/x86/hvm/pmtimer.c index ee5b58f37d..15bb3c3ef6 100644 --- a/xen/arch/x86/hvm/pmtimer.c +++ b/xen/arch/x86/hvm/pmtimer.c @@ -257,7 +257,7 @@ void pmtimer_init(struct vcpu *v) spin_lock_init(&s->lock); - s->scale = ((uint64_t)FREQUENCE_PMTIMER << 32) / ticks_per_sec(v); + s->scale = ((uint64_t)FREQUENCE_PMTIMER << 32) / SYSTEM_TIME_HZ; s->vcpu = v; /* Intercept port I/O (need two handlers because PM1a_CNT is between |