linux-kernel - Re: [PATCH 1/3] ide: add "ignore

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Message-ID: <20090526140132.19e8bc13@lxorguk.ukuu.org.uk>
Date:	Tue, 26 May 2009 14:01:32 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Frans Pop <elendil@...net.nl>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] ide: add "ignore_hpa" module parameter

> Naive thought: wouldn't it be possible to check whether a partition 
> overlaps the HPA boundary and warn or even bug out in that case?

No - believe me we all thought about that. The PC partition format has
starts but not ends so you need detailed internal file system knowledge
to play guessing games (which thus needs to be user space). Some of the
non PC formats use the middle or end of disk so if you don't know the
size you can't *find* the partition data.

Alan
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