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

Jeff Garzik
2007-11-10T03:57:48Z

Theodore Tso wrote:
> On Fri, Nov 09, 2007 at 10:05:05PM -0500, Jeff Garzik wrote:
>> 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.
>
> Not even as boot-time option? I'm curious whether it might allow me
> to use AHCI mode on a T60p laptop; right now I can't because in AHCI
> mode the Ultrabay hard drive device becomes invisible to Linux
> (although not to Windows, interestingly). I'm currently travelling
> and I don't carry the T60 around anymore, so I can't do the experiment
> right this moment, but given that this would allow the T60 to take
> advantage of ALPM if this works, it would be awfully tempting....

Oh sure, a boot-time option would be fine.

I want to spread AHCI far and wide; it is vastly superior to ata_piix in
many ways.

I was mainly talking about unconditionally changing behavior from the
current default, which presents several problems.

Jeff