linux-kernel - Re: [PATCH] romsignature/checksum cleanup

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Message-ID: <4591C230.3070705@gmail.com>
Date:	Wed, 27 Dec 2006 01:45:36 +0100
From:	Rene Herman <rene.herman@...il.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Zachary Amsden <zach@...are.com>, Andrew Morton <akpm@...l.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] romsignature/checksum cleanup

Rusty Russell wrote:

> On Mon, 2006-12-25 at 01:53 +0100, Rene Herman wrote:

>> Hmm, by the way, if romsignature() needs this probe_kernel_address() 
>> thing, why doesn't romchecksum()?
> 
> I assume it's all in the same page, but CC'ing Zach is easier than
> reading the code 8)

If we're talking hardware pages here; the romchecksum() might be done 
over an area upto 0xff x 512 = 130560 bytes (there's also an acces to 
the length byte at rom[2] in probe_roms(). I assume that one's okay if 
romsignature() ensured that the first page is in).

Rene.

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