Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stoppedby host

From: Avi Kivity
Date: Wed Dec 14 2011 - 09:40:20 EST


On 12/14/2011 02:16 PM, Marcelo Tosatti wrote:
> > Having this controlled from userspace means it doesn't work for SIGSTOP
> > or for long scheduling delays. What about doing this automatically
> > based on preempt notifiers?
>
> Long scheduling delays should be considered hangups from the guest
> perspective.

Why? To the guest it looks like slow hardware, but it will interpret it
as a softlockup.

> About SIGSTOP, that is a corner case. Unsure if its even properly supported
> by QEMU.

It works from my experience.

--
error compiling committee.c: too many arguments to function

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