Re: [Xen-devel] (XEN) traps.c:2430:d0 Domain attempted WRMSR 00000000c0010000 from 0x0000000000430076 to 0x0000000000030076.

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 15.08.11 at 14:30, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> On Mon, Aug 15, 2011 at 08:40:36AM +0100, Jan Beulich wrote:
>> >>> On 14.08.11 at 15:48, Keir Fraser <keir.xen@xxxxxxxxx> wrote:
>> > You can specify guest_loglvl=error to turn off warning messages, but that
>> > would turn off other messages that might actually be interesting.
>> > Alternatively you'd have to disable the message in source code and rebuild
>> > the hypervisor. Possibly we should reduce this message to debug loglevel
>> > rather than warning logelevel: I agree the message is very much not a
>> > rarity.
>> 
>> I tend to disagree - the kernel shouldn't really attempt these writes.
>> One of the things addressing of which is more cumbersome in pv-ops
>> (which I assume is in use here) than "classic" kernels.
> 
> It might be good to find out what those calls are and see about actually
> fixing it.

These are performance monitoring MSRs, and as we seem to agree the
whole perf subsystem is currently not usable with Xen.

Jan


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