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

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Message-ID: <4937F8F1.3070402@redhat.com>
Date:	Thu, 04 Dec 2008 17:36:17 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Luis Henriques <henrix@...o.pt>
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

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.


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


View attachment "kvm-ftrace-peace.patch" of type "text/plain" (1732 bytes)