Re: Monotonic clock with KVM pv-clock

Fernando Luis Vazquez Cao
2014-01-20T14:59:56Z

(2014/01/20 22:33), Marcelo Tosatti wrote:
> On Mon, Jan 20, 2014 at 11:56:56AM +0200, Nadav Har'El wrote:
>> If KVM_SYSTEM_TIME is not a correct way to get a monotonic paravirtual clock
>> from KVM, is there a correct way?
> Inside a Linux guest? Can use sched_clock().

I would like to mention that Linux guests usually do not use sched_clock()
directly. The reason being that the kvm_clock based sched_clock() is not
marked stable (sched_clock_stable is 0), which means that the pair of
wrappers sched_clock_local()/sched_clock_remote() is used instead.