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Re: [Xen-devel] Re: IRQs, move_in_progress, -EBUSY &c

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: IRQs, move_in_progress, -EBUSY &c
From: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Date: Wed, 11 Aug 2010 18:49:24 +0100
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Delivery-date: Wed, 11 Aug 2010 10:50:42 -0700
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Seems to work about 50/50.

Attached is a log of a successful boot (exile.008.log), and a failed
boot (exile.009.log).  Suspicious things about the failed case:  the
usb code starts to initialize before the SATA code finishes
initializing, and complains that "Controller is probably using the
wrong IRQ".

Keir: the machine in question (as you may have guessed) is exile; let
me know if you want to grab it and use it directly.


On Wed, Aug 11, 2010 at 4:59 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:
> On 11/08/2010 15:56, "George Dunlap" <George.Dunlap@xxxxxxxxxxxxx> wrote:
>> However, it seems that moving IRQs is not handled properly.  Either
>> the pvops kernel should retry if it gets an -EBUSY, or the hypercall
>> should not fail, but wait until it can return success.
> Can you try the attached patch?
>  Thanks,
>  Keir
>> I discovered all this by adding debug statements to the IRQ path; the
>> patch is attached, if anyone else wants to use it.
>>  -George
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

Attachment: exile.008.log
Description: Text Data

Attachment: exile.009.log
Description: Text Data

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