linux-kernel - RE: [RFC] arm:extend the reserved mrmory for initrd to be page aligned

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Date:	Mon, 15 Sep 2014 18:58:15 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	'Russell King - ARM Linux' <linux@....linux.org.uk>
CC:	'Will Deacon' <will.deacon@....com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"'linux-mm@...ck.org'" <linux-mm@...ck.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: RE: [RFC] arm:extend the reserved mrmory for initrd to be page
	aligned

Oh, I see,
I don't consider non-of platform kernels,
I will send V2 patch for this .

Thanks

-----Original Message-----
From: Russell King - ARM Linux [mailto:linux@....linux.org.uk] 
Sent: Monday, September 15, 2014 6:30 PM
To: Wang, Yalin
Cc: 'Will Deacon'; 'linux-kernel@...r.kernel.org'; 'linux-arm-kernel@...ts.infradead.org'; 'linux-mm@...ck.org'; linux-arm-msm@...r.kernel.org
Subject: Re: [RFC] arm:extend the reserved mrmory for initrd to be page aligned

On Mon, Sep 15, 2014 at 06:22:12PM +0800, Wang, Yalin wrote:
> Oh, I see your meaning,
> Yeah , my initrd is a cpio image,
> And it can still work after apply this patch.

Okay, that's what I wanted to know.  However, I believe your patch to be incorrect.  You delete the assignments to initrd_start and initrd_end in arm_memblock_init(), which will result in non-OF platforms having no initrd.

The reason is that OF platforms set initrd_start and initrd_size from the OF code (drivers/of/fdt.c), but ATAG platforms only set our private
phys_* versions.

The reason I went with phys_* stuff was to permit better verification of the addresses passed - that the addresses were indeed memory locations before passing them through something like __va().

--
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