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[Xen-devel] Re: pause PV domain with pci passthrough
| To: | Sander Eikelenboom <linux@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: pause PV domain with pci passthrough |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Tue, 30 Nov 2010 12:36:59 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> |
| Delivery-date: | Tue, 30 Nov 2010 04:38:15 -0800 |
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| Thread-topic: | pause PV domain with pci passthrough |
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On 30/11/2010 12:14, "Sander Eikelenboom" <linux@xxxxxxxxxxxxxx> wrote:
> Hi Keir/Konrad,
>
> Should it be possible to pause a PV domain ("xm pause") when it has pci
> devices passed through ?
> If not, should it work with a HVM with pci passthrough ?
>
> Trying with a PV domain gave troubles so far.
It might give problems with pending pass-thru interrupts not getting handled
by the paused domain? That could block other, more critical interrupts, like
for disc controllers in dom0. Just a theory. I wouldn't generally recommend
pausing any domain, as a guest OS could get upset getting descheduled for
significant periods of time without being told about it (as a PV guest is
for save/restore).
-- Keir
> --
> Sander
>
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