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From: Avi Kivity <avi@redhat.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Michael S. Tsirkin" <mst@redhat.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] qemu-kvm: kvm headers update
Date: Thu, 08 Oct 2009 15:39:56 +0200	[thread overview]
Message-ID: <4ACDEBAC.10200@redhat.com> (raw)
In-Reply-To: <200910061909.29977.arnd@arndb.de>

On 10/06/2009 07:09 PM, Arnd Bergmann wrote:
> On Tuesday 06 October 2009, Avi Kivity wrote:
>    
>> On 10/05/2009 09:27 PM, Michael S. Tsirkin wrote:
>>      
>>>
>>>        
>>>> Or is this the output of 'make headers_install'?
>>>>
>>>>          
>>> yes. I just added include to kvm_types to add the CONFIG_ stuff.
>>> Or maybe instead we should fix users to depend on the correct ifdefs.
>>>
>>>
>>>        
>> I think 'make headers_install' results in non-portable headers since it
>> unifdefs stuff out.
>>      
> The point of 'make headers_install' is to turn kernel headers into
> user space headers, e.g. removing address space annotations
> that are undefined in user space but required in the kernel.
>
> Unifdef only removes parts under #ifdef __KERNEL__, and by extension,
> anything under CONFIG_*, which is not allowed outside of __KERNEL__,
> because it may have an entirely different meaning in user space.
>
> So, for building qemu, we should really use a copy of the 'installed'
> version, but of course not for building the external module.
>    

Yeah - kvm headers used to depend on CONFIG_*, but looks like this was 
fixed (by me - oh my memory).

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


      parent reply	other threads:[~2009-10-08 13:40 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-05  9:46 [PATCH] qemu-kvm: kvm headers update Michael S. Tsirkin
2009-10-05 15:38 ` Avi Kivity
2009-10-05 19:27   ` Michael S. Tsirkin
2009-10-06  9:51     ` Avi Kivity
2009-10-06  9:52     ` Avi Kivity
2009-10-06 17:18       ` Michael S. Tsirkin
     [not found]       ` <200910061909.29977.arnd@arndb.de>
2009-10-08 13:39         ` Avi Kivity [this message]

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