Re: [Xen-devel] pv kernel panic xen 4.4 unstable with large number of vcpus and default max_event_channel

[Elena Ufimtseva <ufimtseva@xxxxxxxxx>]

On Mon, Dec 2, 2013 at 7:38 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> On Sun, Dec 01, 2013 at 01:03:08AM -0500, Elena Ufimtseva wrote:
>> Hi
>>
>> pv kernel crashes when starting guest with vcpus above 150 with latest
>> linux kernel. WIth increase of max_event_channel it boots (I tried
>> 4096).
>>
>>
>> [    0.387911] ------------[ cut here ]------------
>> [    0.387918] kernel BUG at drivers/xen/events.c:909!
>
> This is due to hypervisor failing to bind IPI for that guest. You're
> probably running out of resources.
>
> Try 'wc -l /proc/interrupts' 'grep ipi /proc/interrputs | wc -l' when
> the guest is running to have an idea how many it needs. ;-)
>

Yes, I am sure it is )
Thank you, will check it out.

> Wei.



-- 
Elena

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