linux-kernel - Re: [RFC PATCH 6/6] sparc64: use early

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Message-ID: <4B9824D5.8090906@kernel.org>
Date:	Wed, 10 Mar 2010 15:01:41 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	David Miller <davem@...emloft.net>
CC:	mingo@...e.hu, tglx@...utronix.de, hpa@...or.com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [RFC PATCH 6/6] sparc64: use early_res and nobootmem

On 03/10/2010 02:36 PM, David Miller wrote:
> From: Yinghai Lu <yinghai@...nel.org>
> Date: Wed, 10 Mar 2010 14:31:25 -0800
> 
>> they are array based.
>>
>> 1. memmap is not changed after get it from firmware, <could be modified via mem= or memmap=>
>> 2. early_res at first is static array, later it will be relocated to another position if the array is not big enough.
> 
> LMB could do this too with minor modifications.
> 
> Simply make the lmb.memory and lmb.reserved be pointers, and initially
> they point into the static array(s).
> 
> Later the pointers can be repositioned to point to dynamically
> allocated memory.
> 
> So please, for the third time, please show me how LMB with some minor
> modifications is not able to satisfy your needs.

you could do it, 
need to duplicate some functions from early_res.c and fw_memmap.c
esp __check_and_double_early_res, get_free_all_memory_range

YH
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