linux-kernel - Re: [PATCH] Add quirk to set AHCI mode on ICH boards

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <47351FE1.4000001@garzik.org>
Date:	Fri, 09 Nov 2007 22:05:05 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Mark Lord <liml@....ca>, Riki Oktarianto <rkoktarianto@...il.com>,
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH] Add quirk to set AHCI mode on ICH boards

Alan Cox wrote:
> On Thu, 8 Nov 2007 22:46:22 -0500
> Jeff Garzik <jeff@...zik.org> wrote:
> 
>> On Thu, Nov 08, 2007 at 10:29:37PM -0500, Mark Lord wrote:
>>> And I might even privately patch my own kernels to map the ACHI BAR
>>> in the cases where the BIOS didn't...
>> The inability to do this in the general case is the main reason why
>> AHCI was not unconditionally enabled, even in IDE mode, when it was
>> originally added...  :/
> 
> We've done it all the time for various devices without problems (eg S3
> video cards). I'd like to see it go in - although perhaps attached to a
> force_ahci boot param initially

By forcing AHCI, your PATA devices will be inaccessible, in a common 
configuration.  It also means shuffling users from one driver to 
another, which induces breakage.

I was speaking wishfully.  Real life intrudes, alas.

	Jeff


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/