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Re: [Xen-devel] [BUG] After upgrade to Xen 4.12.0 iommu=no-igfx
- To: Roman Shaposhnik <roman@xxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 23 Jul 2019 18:50:23 +0100
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- Cc: "jgross@xxxxxxxx" <jgross@xxxxxxxx>, Paul Durrant <Paul.Durrant@xxxxxxxxxx>, "jbeulich@xxxxxxxx" <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "boris.ostrovsky@xxxxxxxxxx" <boris.ostrovsky@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 23 Jul 2019 17:50:30 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 23/07/2019 18:48, Roman Shaposhnik wrote:
> On Tue, Jul 23, 2019 at 10:35 AM Andrew Cooper
> <andrew.cooper3@xxxxxxxxxx> wrote:
>> On 23/07/2019 18:32, Roman Shaposhnik wrote:
>>> Hi Roger!
>>>
>>> I applied your patch, removed no-igfx and I still see the original
>>> problem. Please let me know what other logs/debugs would you need at
>>> this point.
>> Please can you collect a full boot log with iommu=debug
> How long of an output should I expect when iommu=debug is enabled?
> I've just enabled it and I'm looking at what appears to be an endless
> scroll of debug info.
>
> This is all I see for the good 5 minutes at this point. Culminating with:
> (XEN) (XEN) APIC error on CPU0: 40(00)
>
> and a failure to boot.
>
> Note that this is still without no-igfx
>
> I'm attaching the tail end of this log.
Sadly, what is useful is the head of the log, before it starts
complaining loudly about every DMA fault.
~Andrew
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