linux-kernel - Re: [PATCH] memblock: Don't adjust size in memblock_find

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Message-ID: <4D2AAE4D.7030809@kernel.org>
Date:	Sun, 09 Jan 2011 22:59:25 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH] memblock: Don't adjust size in memblock_find_base()

On 01/09/2011 09:56 PM, Benjamin Herrenschmidt wrote:
> On Fri, 2011-01-07 at 12:41 -0800, Yinghai Lu wrote:
>> While applying patch to use memblock to find aperture for 64bit x86.
>> Ingo found system with 1g + force_iommu
> 
> Please run that through DaveM. I seem to remember that he relies on the
> size alignment to ensure that a lot of tiny allocations get properly
> coalesced or he runs out of regions at boot time.

should be safe, the path that DaveM need, still have those size alignment applied.

Thanks

Yinghai
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