Re: [Xen-devel] resume from S3 sleep not working in Dom0 - Xen4.2.1

[Tomasz Wroblewski <tomasz.wroblewski@xxxxxxxxxx>]

> > Thanks Konrad. I've tried your patches, and whilst I have not seen this
> > crash in cpuidle_register anymore, the others are still present (in
> > build_schedule_domains for example).
> >
> >      
> That looks familiar too. I think it got fixed in the upstream kernel
> and it was a generic bug - but I can't recall which commit it was.
>
>    
Aha, all right.
> > I've stumbled on a bit of interesting info - using dom0_vcpus_pin on xen
> > commandline stops both the xen scheduler and dom0 kernel crashing and all
> > works fine - made dozens of succesfull s3 attempts. Was wondering if you
> > guys had any thoughts on this? Is the dom0 kernel even supposed to cope
> > during s3 in non dom0 vcpu pin case?
> >
> >      
> No that is something new. Is this only an issue on Intel boxes but not AMD?
>    
I think it was primarily reproducible on sandybridge intels whilst being 
hard/impossible to repro on Ivy Bridge - and sorry - don't have an AMD 
box to make a test. It might just go away with newer kernel though, I 
think we're in the process of updating to 3.8 (previous tests were on 
3.2) so will be worth trying on that.


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