From: Jeff Garzik <jgarzik@pobox.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
Andries Brouwer <aebr@win.tue.nl>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ide: limit drive capacity to 137GB if host doesn't support LBA48
Date: Thu, 14 Aug 2003 11:14:09 -0400 [thread overview]
Message-ID: <3F3BA741.9030304@pobox.com> (raw)
In-Reply-To: <1060851207.5535.15.camel@dhcp23.swansea.linux.org.uk>
Alan Cox wrote:
> On Iau, 2003-08-14 at 02:24, Bartlomiej Zolnierkiewicz wrote:
>
>> hwif->rqsize = old_hwif.rqsize;
>>- hwif->addressing = old_hwif.addressing;
>>+ hwif->no_lba48 = old_hwif.no_lba48;
>
>
> This change is a bad idea. Its called "addressing" because that is what
> it is about (see SATA and ATA specs). In future SATA addressing becomes
> a 0,1,2 value because 48bits isnt enough, it may get more forms beyond
> that.
>
> Might be worth defining ADDR_LBA48, ADDR_LBA28 etc to make it clearer,
> but really people shouldnt be randomly hacking IDE code without having
> read the specifications.
Yep. Guess what? Some host controller vendors are already building
lba64 support into their chips...
Jeff
prev parent reply other threads:[~2003-08-14 15:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-14 1:24 [PATCH] ide: limit drive capacity to 137GB if host doesn't support LBA48 Bartlomiej Zolnierkiewicz
2003-08-14 8:53 ` Alan Cox
2003-08-14 9:16 ` Andries Brouwer
2003-08-14 9:18 ` Nick Piggin
2003-08-14 11:03 ` Alan Cox
2003-08-14 12:48 ` Bartlomiej Zolnierkiewicz
2003-08-14 13:44 ` Alan Cox
2003-08-14 15:14 ` Jeff Garzik [this message]
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