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

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Message-ID: <459EDDD1.6060208@goop.org>
Date:	Fri, 05 Jan 2007 15:22:57 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Rene Herman <rene.herman@...il.com>
CC:	Zachary Amsden <zach@...are.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Andrew Morton <akpm@...l.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] romsignature/checksum cleanup

Rene Herman wrote:
> Jeremy? Is it okay to only check the signature word? The checksum will
> generally be done over more than 1 (hw) page... That "presumably"
> there seems a bit flaky? 

Well, in the Xen case, where the pages are simply not mapped, then the
signature simply won't exist.  In other cases, I guess its possible the
signature might exist but the rest of the ROM doesn't, but that won't
happen on normal hardware.

    J

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