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authorRenato Botelho <renato@netgate.com>2017-02-23 06:37:07 -0300
committerRenato Botelho <renato@netgate.com>2017-02-23 06:37:07 -0300
commit4ef888db25896b2295f521c736ef04aa2e5e64ec (patch)
tree3fcc00dda536bd32ae85bc09f21be4081d32bad5 /sys/dev/hyperv/utilities/vmbus_timesync.c
parent272ffd7c3e4e5e27910eb918e2e36556f2a8ec3a (diff)
parentaf015c5bcac0e333adeec07eff0698bad3b91e95 (diff)
downloadFreeBSD-src-4ef888db25896b2295f521c736ef04aa2e5e64ec.zip
FreeBSD-src-4ef888db25896b2295f521c736ef04aa2e5e64ec.tar.gz
Merge remote-tracking branch 'origin/stable/11' into devel-11
Diffstat (limited to 'sys/dev/hyperv/utilities/vmbus_timesync.c')
-rw-r--r--sys/dev/hyperv/utilities/vmbus_timesync.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/sys/dev/hyperv/utilities/vmbus_timesync.c b/sys/dev/hyperv/utilities/vmbus_timesync.c
index 7610027..66b1e48 100644
--- a/sys/dev/hyperv/utilities/vmbus_timesync.c
+++ b/sys/dev/hyperv/utilities/vmbus_timesync.c
@@ -52,8 +52,7 @@ __FBSDID("$FreeBSD$");
VMBUS_ICVER_LE(VMBUS_IC_VERSION(4, 0), (sc)->ic_msgver)
#define VMBUS_TIMESYNC_DORTT(sc) \
- (VMBUS_TIMESYNC_MSGVER4((sc)) &&\
- (hyperv_features & CPUID_HV_MSR_TIME_REFCNT))
+ (VMBUS_TIMESYNC_MSGVER4((sc)) && hyperv_tc64 != NULL)
static int vmbus_timesync_probe(device_t);
static int vmbus_timesync_attach(device_t);
@@ -117,7 +116,7 @@ vmbus_timesync(struct vmbus_ic_softc *sc, uint64_t hvtime, uint64_t sent_tc,
uint64_t hv_ns, vm_ns, rtt = 0;
if (VMBUS_TIMESYNC_DORTT(sc))
- rtt = rdmsr(MSR_HV_TIME_REF_COUNT) - sent_tc;
+ rtt = hyperv_tc64() - sent_tc;
hv_ns = (hvtime - VMBUS_ICMSG_TS_BASE + rtt) * HYPERV_TIMER_NS_FACTOR;
nanotime(&vm_ts);
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