2012-08-01 08:41:41

by Avi Kivity

[permalink] [raw]
Subject: Re: [RFC PATCH] KVM: Only print vcpu_unimpl when DEBUG is set

On 08/01/2012 06:19 AM, Marcelo Tosatti wrote:
> On Thu, Jul 26, 2012 at 02:22:48PM +0200, Markus Trippelsdorf wrote:
>> Every time I start qemu-kvm on my system the following line is added to
>> the syslog:
>>
>> vcpu0 unhandled rdmsr: 0xc0010001
>>
>> AFAICS all calls to vcpu_unimpl only contain debugging info with little
>> or no value for the end user.
>>
>> Wouldn't something like the following patch make sense?
>>
>> Signed-off-by: Markus Trippelsdorf <[email protected]>
>
> It could be useful for debugging (but then lots of other things could).
>
> Anyone has a use for this?

The current scenario is:

<guest breaks>
Maintainer asks for dmesg
If something shows up, it's something to consider

Following this patch, the scenario will be

<guest breaks>
Maintainer: please enable dynamic debug for kvm and reproduce
If something shows up, it's something to consider

I guess with dynamic debug it's acceptable, we just need to make sure
that it doesn't spew tons of other stuff.

--
error compiling committee.c: too many arguments to function