linux-kernel - Re: [PATCH 1/2] vmlinux.lds.h: allow people to set a smaller rootfs alignment

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Date:	Thu, 10 Jun 2010 22:50:34 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mike Frysinger <vapier.adi@...il.com>
CC:	Milton Miller <miltonm@....com>, linux-kernel@...r.kernel.org,
	Tim Abbott <tabbott@...lice.com>
Subject: Re: [PATCH 1/2] vmlinux.lds.h: allow people to set a smaller rootfs
 	alignment

On 06/09/2010 12:42 AM, Mike Frysinger wrote:
> 
> i have no problem changing the default to 4 since it works fine on
> Blackfin systems.  your analysis of the source alignment also seems
> reasonable ... i assume that the 8 byte fields in the source cpio
> arent referenced directly, otherwise it'd cause problems on 64bit
> systems that require 64bit values to be naturally aligned.
> 
> beyond that, i dont see why any larger alignment values would be
> required since this source archive isnt executed directly.  it gets
> expanded into a ramfs and then freed with the rest of the init stuff.
> 

We have talked for a long time about incrementally freeing the initramfs
as it is decoded, which might help systems which are using most of their
memory for an initramfs image...

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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