linux-kernel - Re: [Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd early from head

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Date:	Mon, 17 Jun 2013 17:33:08 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Tang Chen <tangchen@...fujitsu.com>
Cc:	tglx@...utronix.de, mingo@...e.hu, hpa@...or.com,
	akpm@...ux-foundation.org, trenn@...e.de, yinghai@...nel.org,
	jiang.liu@...wei.com, wency@...fujitsu.com, laijs@...fujitsu.com,
	isimatu.yasuaki@...fujitsu.com, mgorman@...e.de,
	minchan@...nel.org, mina86@...a86.com, gong.chen@...ux.intel.com,
	vasilis.liaskovitis@...fitbricks.com, lwoodman@...hat.com,
	riel@...hat.com, jweiner@...hat.com, prarit@...hat.com,
	x86@...nel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Pekka Enberg <penberg@...nel.org>,
	Jacob Shin <jacob.shin@....com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-acpi@...r.kernel.org
Subject: Re: [Part1 PATCH v5 09/22] x86, ACPI: Find acpi tables in initrd
 early from head_32.S/head64.c

On Thu, Jun 13, 2013 at 09:02:56PM +0800, Tang Chen wrote:
> From: Yinghai Lu <yinghai@...nel.org>

Ditto for the opening.  Probably not a must, I suppose, but would be
very nice.

> head64.c could use #PF handler setup page table to access initrd before
> init mem mapping and initrd relocating.
> 
> head_32.S could use 32bit flat mode to access initrd before init mem
> mapping initrd relocating.
> 
> This patch introduces x86_acpi_override_find(), which is called from
> head_32.S/head64.c, to replace acpi_initrd_override_find(). So that we
> can makes 32bit and 64 bit more consistent.
> 
> -v2: use inline function in header file instead according to tj.
>      also still need to keep #idef head_32.S to avoid compiling error.
> -v3: need to move down reserve_initrd() after acpi_initrd_override_copy(),
>      to make sure we are using right address.
> 
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> Cc: Pekka Enberg <penberg@...nel.org>
> Cc: Jacob Shin <jacob.shin@....com>
> Cc: Rafael J. Wysocki <rjw@...k.pl>
> Cc: linux-acpi@...r.kernel.org
> Tested-by: Thomas Renninger <trenn@...e.de>
> Reviewed-by: Tang Chen <tangchen@...fujitsu.com>
> Tested-by: Tang Chen <tangchen@...fujitsu.com>

Other than that,

 Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun
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