linux-kernel - Re: [Xen-devel] Re: Allow compile with CONFIG_DEBUG_INFO=y, X86

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Date:	Fri, 8 Aug 2008 21:37:11 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Mark McLoughlin <markmc@...hat.com>, xen-devel@...ts.xensource.com,
	Eduardo Habkost <ehabkost@...hat.com>,
	Stephen Tweedie <sct@...hat.com>, linux-kernel@...r.kernel.org,
	Simon Horman <horms@...ge.net.au>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>
Subject: Re: [Xen-devel] Re: Allow compile with CONFIG_DEBUG_INFO=y,
	X86_PAE not set on gcc 3.4.5

On Fri, Aug 08, 2008 at 11:01:30AM -0700, Jeremy Fitzhardinge wrote:
> Adrian Bunk wrote:
>> On Fri, Aug 08, 2008 at 08:21:41AM -0700, Jeremy Fitzhardinge wrote:
>>   
>>> Adrian Bunk wrote:
>>>     
>>>> CONFIG_DEBUG_INFO=y is why I never hit it before.
>>>>
>>>> It does not seem to be just one dodgy Redhat compiler (as I assumed 
>>>> in  the Bugzilla entry) but the whole 3.4 series of gcc which makes 
>>>> our  resolution of saying that this specific compiler is broken 
>>>> invalid.
>>>>
>>>> Considering that we officially support all compilers >= 3.2 this is 
>>>> just one more case where we have to add to the kernel a workaround 
>>>> for a broken compiler.
>>>>         
>>> Yes.  I'm happy to write off a specific rpm package, but a whole 
>>> series  is a different matter.
>>>
>>> Adding
>>>
>>> 	if (PREALLOCATED_PMDS == 0)
>>> 		return;
>>>
>>> in the appropriate places with a small comment seems like the right answer.
>>>     
>>
>> The patch below you suggested fixes it for me with gcc 3.4.6.
>>
>>   
>>>    J
>>>     
>>
>> cu
>> Adrian
>>   
>
> OK.  Want to submit this as a proper patch?
>...

No, it's your patch.  :-)

> Thanks,
>    J
>...

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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