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Bug#654917: linux-image-2.6.32-5-xen-amd64 - Regression: Improper interrupt handling

On Fri, 2012-01-06 at 21:30 +0100, Bastian Blank wrote:
> Source: linux-2.6
> Version: 2.6.32-40
> Severity: serious
> I updated one of the Xen hosts to 2.6.32-40. It is not longer able to
> properly communicate with USB devices. This is a regression to -38.

Hi Bastian,

I imagine -39 works for you since the changes from -38 to -39 were
rather small, and therefore it is actually -40 which contains the

My best guess is that this is caused by the patches I added for #638172
in SVN r18375. Could you try with them reverted to confirm? It's the
entirety of the penultimate block of patches in

I've crawled over the diff between the current Debian tree and the
xen.git#xen/next-2.6.32 tree and the event handling stuff is basically
identical so I'm at a loss to explain why these would have broken things
(and this kernel works for me). :-/

Please could you post the boot dmesg of both a native and xen boot of
the same -40 kernel binary? Also /proc/interrupts might be interesting
to compare. If you have time you could also provide the same for -38
booted on xen, just for comparisons sake.

Ian Campbell

Disease can be cured; fate is incurable.
		-- Chinese proverb

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