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xen-devel
Re: [Xen-devel] [PATCH] Skip vcpu_hotplug for VCPU 0 in smp_resume
On 02/04/2009 09:13, "Kieran Mansley" <kmansley@xxxxxxxxxxxxxx> wrote:
> On Wed, 2009-04-01 at 11:39 -0700, Brendan Cully wrote:
>> I'm afraid my memory of the kernel suspend mechanics has gotten a bit
>> rusty over the last few months, so I may be off-base here. But I
>> thought that xs_suspend masked watches until xs_reusume or
>> xs_suspend_cancel? If that is the case, isn't that on its own enough
>> to protect netfront?
>
> If that's the case, it should be enough, yes.
>
> Do watches that would have fired during that time fire at the end of
> masked period? If not, we'd still have to access xenstore on suspend
> cancel to check if we've missed a change.
I don't think watches get lost across suspend-cancel, just delayed.
-- Keir
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