Re: [PATCH kvm-unit-tests] x86:kvmclock-test: add testcases for x-cpu clock warp

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On 20/06/2016 18:55, Roman Kagan wrote:
> > Note that even in the (faked) case of PVCLOCK_TSC_STABLE_BIT unset, when
> > pvclock_clocksource_read() tries to monotonize the clock using basically
> > the same technique as the testcase uses, it still fails the global
> > monotonicity test.
>
> I've finally realized the obvious "how I screwed it all up": the
> standard pattern is to read the clock and compare to other vCPUs /
> update the shared value in a single critical section.  So please
> disregard my patches to the tests, per-cpu counters are of little
> interest here.

Actually aren't per-cpu counters used by the vDSO?

Paolo
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux