Messages in this thread | | | Date | Tue, 14 May 2013 10:52:54 -0700 | From | John Stultz <> | Subject | Re: [PATCH 1/3] x86: increase precision of x86_platform.get/set_wallclock() |
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On 05/13/2013 10:56 AM, David Vrabel wrote: > From: David Vrabel <david.vrabel@citrix.com> > > All the virtualized platforms (KVM, lguest and Xen) have persistent > wallclocks that have more than one second of precision. > > read_persistent_wallclock() and update_persistent_wallclock() allow > for nanosecond precision but their implementation on x86 with > x86_platform.get/set_wallclock() only allows for one second precision. > This means guests may see a wallclock time that is off by up to 1 > second. > > Make set_wallclock() and get_wallclock() take a struct timespec > parameter (which allows for nanosecond precision) so KVM and Xen > guests may start with a more accurate wallclock time and a Xen dom0 > can maintain a more accurate wallclock for guests. > > Signed-off-by: David Vrabel <david.vrabel@citrix.com>
I've gone ahead and queued this one for 3.11
thanks -john
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