linux-kernel - Re: [PATCH 27/35] core: move early

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Date:	Tue, 16 Feb 2010 15:53:05 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH 27/35] core: move early_res

On 02/16/2010 03:46 PM, H. Peter Anvin wrote:
> On 02/14/2010 12:46 PM, Yinghai Lu wrote:
>>
>> please check
>>
>> Subject: [PATCH -v2] x86: fix cross-arch compiling
>>
>> Ingo found:
>> lots of cross-arch build failures in latest -tip:
>>
>>  
>> +u64 __init __weak get_max_mapped(void)
>> +{
>> +	panic("should have get_max_mapped defined with arch");
>> +
>> +	return -1ULL;
>> +}
>> +
> 
> All this does would seem is it would change a build failure into a
> runtime panic.  I really fail to see how this is an improvement...

current only x86 support to early_res replace bootmem.

later if other arch is using that feature, it need to provide that get_max_mapped.

Yinghai
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