Re: [Xen-devel] [PATCH] Skip vcpu_hotplug for VCPU 0 in smp_resume

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 31/03/2009 18:24, "Brendan Cully" <brendan@xxxxxxxxx> wrote:

> The other is in the netfront accelerator. It tears down a xenstore
> watch on the accelerator path at every suspend, and adds the watch
> back on resume. As with any xenstore interaction, this can
> occasionally take a very long time. I'm going from faulty memory here,
> but I didn't think it was necessary to tear down and restore watches
> across suspend. Would it make sense to move the watch remove and add
> into the resume hook (taking it completely out of suspend and
> suspend_cancel)?

They have to be renewed on full resume, but of course they do not get reset
across a cancelled suspend. Kieran may be able to advise on changing the net
accel code.

 -- Keir



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