linux-kernel - Re: 2.6.24-rc3-mm1 make headers

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Date:	Sun, 02 Dec 2007 10:56:42 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Sam Ravnborg <sam@...nborg.org>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, Andy Whitcroft <apw@...dowen.org>
Subject: Re: 2.6.24-rc3-mm1 make headers_check fails

Andrew Morton wrote:
> On Wed, 21 Nov 2007 12:17:14 +0200 Avi Kivity <avi@...ranet.com> wrote:
>
>   
>> Avi Kivity wrote:
>>     
>>>>>>>   
>>>>>>>               
>>>>>>>> The make headers_check fails,
>>>>>>>>
>>>>>>>>  CHECK   include/linux/usb/gadgetfs.h
>>>>>>>>  CHECK   include/linux/usb/ch9.h
>>>>>>>>  CHECK   include/linux/usb/cdc.h
>>>>>>>>  CHECK   include/linux/usb/audio.h
>>>>>>>>  CHECK   include/linux/kvm.h
>>>>>>>> /root/kernels/linux-2.6.24-rc3/usr/include/linux/kvm.h requires 
>>>>>>>> asm/kvm.h, which does not exist in exported headers
>>>>>>>>                
>>>>>>>>                 
>>>>>>> hm, works for me, on i386 and x86_64.  What's different over there?
>>>>>>>            
>>>>>>>               
>>>>>> Hi Andrew,
>>>>>>
>>>>>> It fails on the powerpc box, with allyesconfig option.
>>>>>>
>>>>>>  
>>>>>>       
>>>>>>             
>>>>> How do we fix this?  Export linux/kvm.h only on x86?  Seems ugly.
>>>>>     
>>>>>           
>>>> Is kvm x86 specific? Then move the .h file to asm-x86.
>>>> Otherwise no good idea...
>>>>
>>>>   
>>>>         
>>> kvm.h is x86 specific today, but will be s390, ppc, ia64, and x86 
>>> specific tomorrow.
>>>
>>> What about having a asm-generic/kvm.h with a nice #error?    would 
>>> that suit?
>>>
>>>       
>> headers_check continues to complain.  Is the only recourse to add 
>> asm/kvm.h for all archs?
>>
>>     
>
> That would work.
>
> Meanwhile my recourse is to drop the kvm tree ;)
>   

Since you put it this way...

I committed the attached (sorry) patch to kvm.git.   Rather than 
touching 2*($NARCH - 1) file, I changed include/linux/Kbuild to only 
export kvm.h if the arch actually supports it.  Currently that's just x86.


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


View attachment "0001-KVM-Export-include-linux-kvm.h-only-if-ARCH-actual.patch" of type "text/x-patch" (1877 bytes)