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

[Eric B Munson]

On Wed, 14 Dec 2011, Avi Kivity wrote:

> 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
> 

And if the soft lockup warning is a concern here, we can have a SIGCONT handler
set the flag the same way qemu stop/cont does.

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