>>> On 07.01.15 at 17:30, <ian.campb...@citrix.com> wrote:
> On Wed, 2015-01-07 at 17:16 +0100, Imre Palik wrote:
>> From: "Palik, Imre" <im...@amazon.de>
>>
>> In Dom0's the use of the TSC clocksource (whenever it is stable enough to
>> be used) instead of the Xen clocksource should not cause any issues, as
>> Dom0 VMs never live-migrated.
>
> Is this still true given that dom0's vcpus are migrated amongst pcpus on
> the host? The tsc are not synchronised on some generations of hardware
> so the result there would be the TSC appearing to do very odd things
> under dom0's feet. Does Linux cope with that or does it not matter for
> some other reason?
Indeed. The textual qualification above ("whenever it is stable enough")
isn't being expressed in the code change at all.
Jan
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