linux-kernel - Re: [BUG] kvm crashes in 2.6.28-rc6-00007-ged31348

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Date:	Thu, 4 Dec 2008 22:05:11 +0000
From:	Luis Henriques <henrix@...o.pt>
To:	Avi Kivity <avi@...hat.com>
Cc:	Steven Rostedt <srostedt@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [BUG] kvm crashes in 2.6.28-rc6-00007-ged31348

On Thu, Dec 04, 2008 at 05:36:17PM +0200, Avi Kivity wrote:
> Avi Kivity wrote:
>> Steven Rostedt wrote:
>>> The following must be available without recursion for the function
>>> tracer to work:
>>>
>>>   local_irq_save/restore
>>>   smp_processor_id
>>>   preempt_enable/disable_notrace
>>>   atomic_inc/dec
>>>   
>>
>> In arch/x86/kvm/svm.c, function svm_vcpu_run(), everything between the  
>> vmrun instruction and the call to load_host_msrs() is executed without  
>> a live pda, so no smp_processor_id().  Could easily be fixed by  
>> rearranging things.
>>
>>
>
> Luis, please try the attached patch.

Sorry for taking so long testing the patch.  However, I got exactly the same
result as before, i.e., a crash.

Regards,
-- 
Luis Henriques
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