Re: Issue about domU missing interrupt

Jan Beulich
Mon, 03 Dec 2012 08:46:26 -0000

>>> On 03.12.12 at 04:47, "G.R."
<firemeteor@users.sourceforge.net> wrote:
> Hi developers,
> I met some domU issues and the log suggests missing interrupt.
> Details from here:
> http://www.gossamer-threads.com/lists/xen/users/263938#263938
> In summary, this is the suspicious log:
>
> (XEN) vmsi.c:122:d32767 Unsupported delivery mode 3
>
> I''ve checked the code in question and found that mode 3 is an
''reserved_1''
> mode.
> I want to trace down the source of this mode setting to root-cause the
> issue.
> But I''m not an xen developer, and am even a newbie as a xen user.
> Could anybody give me instructions about how to enable detailed debug log?
> It could be better if I can get advice about experiments to perform /
> switches to try out etc.

Please check the list archives, this issue was discussed in great
lengths a couple of months ago (and should be fixed in current
trees).

Jan