I think Jan also answered your question. Dom0 shouldn't touch ioapic after
initialization time any more. That is to say, maybe we can find a way to get
rid of ioapic from dom0. Actually I can't see why dom0 cares so much about
ioapic. Jeremy, do you know the reason ? IMO, dom0 should only cares about
GSI and pirq mapping, but currently GSI is always equal to pirq in dom0, so no
reason to keep ioapic in dom0.
Xiantao
-----Original Message-----
From: Christoph Egger [mailto:Christoph.Egger@xxxxxxx]
Sent: Thursday, September 03, 2009 6:05 PM
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Cc: Zhang, Xiantao; Keir Fraser
Subject: Re: [Xen-devel] RE: [PATCH] Don't free irqaction for com irq when
release irq.
On Thursday 03 September 2009 11:38:35 Zhang, Xiantao wrote:
> No, host S3 issue is caused by ioapic suspend/resume in dom0. IMO, dom0
> shouldn't perform S3 for ioapic , right ?
dom0 initializes and programs ioapic. In short: ioapic is under control of
dom0. Please explain why dom0 shouldn't do ioapic suspend/resume.
Christoph
> After fixing that issue, domain
> S3 works well. Xiantao
>
> -----Original Message-----
> From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
> Sent: Thursday, September 03, 2009 2:14 PM
> To: Zhang, Xiantao; Xen
> Subject: Re: [PATCH] Don't free irqaction for com irq when release irq.
>
> On 03/09/2009 05:14, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> wrote:
> > # HG changeset patch
> > # User root@xxxxxxxxxxxxxxxxxxxxx
> > # Date 1251916103 14400
> > # Node ID 49e847aed58dde35f8a0f909999d01d97be6f531
> > # Parent 3b7cbf32fee909d860daacf70b8c3b97eaf036b5
> > x86: com devices's irqaction shouldn't free.
> >
> > Since irqs of serial devices are initialized in early Xen and
> > its irqaction is not allocated from heap, so doesn't need free
> > in release irq logic.
> > Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
>
> Does this fix host S3?
>
> -- Keir
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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