Re: [Xen-devel] (XEN) traps.c:3156: GPF messages in xen dmesg

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Monday, December 17, 2012, 5:57:24 PM, you wrote:

>>>> On 17.12.12 at 17:48, Valtteri Kiviniemi <kiviniemi.valtteri@xxxxxxxxx> 
>>>> wrote:
>> I'm running Xen 4.2.0 with Linux kernel 3.7.0 and I'm seeing a flood of
>> these messages in xen dmesg:
>> 
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> (XEN) traps.c:3156: GPF (0060): ffff82c480159247 -> ffff82c4802170e4
>> 
>> What does that mean and is it something that I should worry about?

> It means that the hypervisor recovered from #GP faults several
> times. What exactly it was that faulted you'd need to look up by
> translating the addresses above and resolving them to source
> locations. That'll also tell you whether you ought to be worried.

> A common example of these happening is Xen carrying out MSR
> accesses on behalf of the kernel, when the MSR actually isn't
> implemented (i.e. the kernel itself also is prepared to handle
> faults upon accessing them).

Hi Jan,

Perhaps related to a previous discussion (with a open end ..)
http://lists.xen.org/archives/html/xen-devel/2012-09/msg01599.html

--
Sander

> Jan





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