Re: [PATCHv3 2/2] kvm: x86: implement KVM PM-notifier

From: Sergey Senozhatsky
Date: Mon Jun 07 2021 - 20:46:15 EST


On (21/06/07 15:54), Maxim Levitsky wrote:
>
> Overall this looks OK to me.
>
> Do you have a test case in which this patch helps to make the guest behave better after
> the host suspend though? I tested this and I don't see any significant change.
> (guest works after host suspend before and after, and I still have clocksource
> watchdogs firing in the guest)

Yes, we have automated suspend-resume tests. What happens for us is that,
when not properly paused, guests, upon host resume, discover jiffies spikes
and trigger all sort of watchdogs.