Re: [Xen-devel] [PATCH] fix iommu interrupt setup

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 13/02/2009 11:57, "Espen Skoglund" <espen.skoglund@xxxxxxxxxxxxx> wrote:

>> By the way, one of your other patches got reverted since it broke
>> booting on a bunch of systems. It was applied as c/s 19178 and
>> reverted as c/s 19182.  It was the one that separates IOAPIC mgmt
>> from vector mgmt.
> 
> Yes.  I noticed.  Was going to ask about more info on this one.  Is
> there some bugzilla entry or something that gives some more detail
> about what the problems were?  (I'm a bugzilla newbie and don't follow
> xen-bugs@ at all.)

Hangs when bringing up the disc controller (whether SCSI or IDE) with
command timeouts and the like which generally point to broken interrupts.
When I said it didn't work on a 'wide range' of systems, we didn't actually
find a single system it *did* work on! We must have tested on at least four
separate systems with 100% failure on those. I reckon you should be able to
repro it yourself pretty easily.

 -- Keir



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