linux-kernel - Re: [PATCH] kvm: fix irqfd build failure discovered in linux-next

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Date:	Thu, 21 May 2009 16:29:04 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Gregory Haskins <ghaskins@...ell.com>
CC:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	sfr@...b.auug.org.au, kvm@...r.kernel.org
Subject: Re: [PATCH] kvm: fix irqfd build failure discovered in linux-next

Gregory Haskins wrote:
>>>  EXTRA_CFLAGS += -Ivirt/kvm -Iarch/x86/kvm
>>> +EXTRA_CFLAGS += -DKVM_HAVE_EVENTFD
>>>  
>>>   
>>>       
>> The standard idiom for this is to use a Kconfig symbol; see for
>> example HAVE_KVM_IRQCHIP in arch/*/kvm/Kconfig.
>>     
>
> Ah, I didn't realize I could do this in such a contained manner.  I was
> afraid of polluting the top level arch/Kconfig, which is why I went this
> other route.   But I see from your example that this is not the case.  I
> will make a v2 with this change.
>   

Note the situation is not as good as it could be, as you have to 
replicate the Kconfig for each arch.  One day I'll set up 
virt/kvm/Kconfig which will set up defaults, so archs can override them.

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

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