Re: [Xen-devel] dump with xen-unstable & linux 3.2.17

[Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>]

On 05/23/2012 11:39 AM, Jan Beulich wrote:
> > > > On 22.05.12 at 23:00, Ben Guthro<ben@xxxxxxxxxx>  wrote:
> > I've bisected this to the following commit in the xen-unstable git tree.
> >
> > I'll be able to dive in a little deeper tomorrow.
> > If you see anything here that looks suspicious to the crash
> > referenced... let me know.
> As the change was really a re-write of a submission by JÃrgen,
> I'm adding him to Cc.
>
> Unless he has an immediate idea, we definitely want to
> understand why "cpus" is empty - hence we'd want to see
> *online, *vc->cpu_affinity, vc->cpu_id, and maybe
> vc->processor. (Printing them is probably not a good idea
> here, so I'd instead suggest just copying them to [additional]
> on-stack variables, making sure the compiler doesn't optimize
> them away.)
>
> Probably it would be good to also know what each active
> vCPU's ->cpu_affinity was right before suspend and/or right
> after resume (perhaps in freeze_domains() and/or
> thaw_domains(). That way we'd at least know whether the
> affinity - despite the offending changeset's inverse intention -
> did get changed during the resume process.
No idea, sorry.
I tested the patch only against a problem with power_off, so I never hit the
resume path.


Juergen

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Juergen Gross                 Principal Developer Operating Systems
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