Re: [Xen-devel] Using debug-key 'o: Dump IOMMU p2m table, locks up machine

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hello Jan,

Monday, September 3, 2012, 10:21:04 AM, you wrote:

>>>> On 02.09.12 at 10:43, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:
>> I have attached new output from xl dmesg, this time with iommu=debug on (the 
>> option changed from 4.1 to 4.2).

> This one

>>(XEN) [2012-09-02 00:55:02] traps.c:3156: GPF (0060): ffff82c48015c9ee -> 
>>ffff82c480224b13

> also worries me. While Xen gracefully recovers from it, these
> messages still generally indicate a problem somewhere. Could
> you resolve the addresses to file:line tuples? And, assuming
> this happens in the context of doing something on behalf of
> the guest in the context of a guest vCPU, could you also
> check what guest side action triggers this (e.g. by adding a
> call to show_execution_state() alongside the printing of the
> message)?

If you could elaborate a bit abouw HOW :-)

>From what i recall i also had these since some time on xen 4.1 too. Probably a 
>kernel thing, in about 3.5 or 3.6 is my estimation, will see if i can find out 
>some more today or tomorrow.


> Jan




_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel