linux-kernel - Re: kvm warning

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Date:	Thu, 09 Aug 2007 02:09:06 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>, kvm-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: kvm warning

Andrew Morton wrote:
> On Thu, 09 Aug 2007 01:48:07 +0300
> Avi Kivity <avi@...ranet.com> wrote:
>
>   
>> Ingo Molnar wrote:
>>     
>>> * Andrew Morton <akpm@...ux-foundation.org> wrote:
>>>
>>>   
>>>       
>>>> ia64 allmodconfig says
>>>>
>>>> drivers/kvm/Kconfig:14:warning: 'select' used by config symbol 'KVM' 
>>>> refers to undefined symbol 'PREEMPT_NOTIFIERS'
>>>>     
>>>>         
>>> hm, why doesnt ia64 pick up kernel/Kconfig.preempt, like all the other 
>>> arches? Due to that ia64 also misses out on voluntary preempt and on 
>>> preempt-bkl.
>>>
>>>   
>>>       
>> Even more hm, how does ia64 manage to enable kvm?  It 'depends on X86' 
>> at this moment.
>>
>>     
>
> beats me.  CONFIG_KVM doesn't get set.  But it seems that kconfig wants
> to do error-checking on that item anyway.
>
>
>   

I could do a 'select PREEMPT_NOTIFIERS if X86' but it seems silly.  I'd 
call it a Kconfig bug.



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