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Date: Wed, 7 May 2003 10:15:00 -0700 (PDT)
From: Linus Torvalds <torvalds@transmeta.com>
To: Jens Axboe <axboe@suse.de>
cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
       Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] 2.5 ide 48-bit usage
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On Wed, 7 May 2003, Jens Axboe wrote:
> 
> I dunno what the purpose of that would be exactly, I guess to cater to
> some hardware odditites?

And testing. In particular, you might want to test whether a device 
properly supports 48-bit addressing, either from the kernel or from user 
programs.

Also, if you want to re-create some particular IO pattern for debugging, 
you may want to explicitly use 48-bit addressing.

		Linus