From: Jeff Garzik <jgarzik@pobox.com>
To: Greg Stark <gsstark@mit.edu>, Erik Steffl <steffl@bigfoot.com>,
linux-kernel@vger.kernel.org
Subject: Re: libata in 2.4.24?
Date: Tue, 2 Dec 2003 13:49:14 -0500 [thread overview]
Message-ID: <20031202184914.GA7839@gtf.org> (raw)
In-Reply-To: <20031202184648.GU1566@mis-mike-wstn.matchmail.com>
On Tue, Dec 02, 2003 at 10:46:48AM -0800, Mike Fedyk wrote:
> On Tue, Dec 02, 2003 at 01:04:58PM -0500, Jeff Garzik wrote:
> > On Tue, Dec 02, 2003 at 09:40:48AM -0800, Mike Fedyk wrote:
> > > There are PATA drives that do TCQ too, but you have to look for that feature
> > > specifically. IDE TCQ is in 2.6, but is still experemental. I think Jens
> > > Axboe was the one working on it IIRC. He would have more details.
> >
> > Let us distinguish three types of TCQ:
> > 1) PATA drive-side TCQ (now called "legacy TCQ")
> > 2) Controller-side TCQ
> > 3) SATA drive/controller-side TCQ ("first party DMA")
> >
> > libata will never support #1, which is what 2.6 supports in experimental
> > option.
>
> An experemental option with the ide layer, not libata, right?
Correct.
> > libata will support #2 very soon, and will support #3 when hardware is
> > available.
> >
>
> If you have Controller-side TCQ, then will it work with any IDE PATA/SATA
> drive?
Yes.
Jeff
next prev parent reply other threads:[~2003-12-02 18:53 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-28 18:27 linux-2.4.23 released Marcelo Tosatti
2003-11-28 19:06 ` Willy Tarreau
2003-11-28 22:55 ` J.A. Magallon
2003-11-29 22:26 ` libata in 2.4.24? Samuel Flory
2003-11-29 23:10 ` Marcelo Tosatti
2003-12-01 10:43 ` Marcelo Tosatti
2003-12-01 18:06 ` Samuel Flory
2003-12-01 21:12 ` Greg Stark
2003-12-01 21:23 ` Samuel Flory
2003-12-01 21:44 ` Greg Stark
2003-12-01 22:00 ` Jeff Garzik
2003-12-01 22:06 ` Samuel Flory
2003-12-01 22:00 ` Erik Steffl
2003-12-02 5:36 ` Greg Stark
[not found] ` <20031202055336.GO1566@mis-mike-wstn.matchmail.com>
2003-12-02 5:58 ` Mike Fedyk
2003-12-02 16:31 ` Greg Stark
2003-12-02 17:40 ` Mike Fedyk
2003-12-02 18:04 ` Jeff Garzik
2003-12-02 18:46 ` Mike Fedyk
2003-12-02 18:49 ` Jeff Garzik [this message]
2003-12-04 8:18 ` Jens Axboe
2003-12-02 18:02 ` Jeff Garzik
2003-12-02 18:51 ` Greg Stark
2003-12-02 19:06 ` Jeff Garzik
2003-12-02 20:10 ` Greg Stark
2003-12-02 20:16 ` Jeff Garzik
2003-12-02 20:34 ` Greg Stark
2003-12-02 22:34 ` bill davidsen
2003-12-02 23:02 ` Mike Fedyk
2003-12-02 23:18 ` bill davidsen
2003-12-02 23:40 ` Mike Fedyk
2003-12-03 0:01 ` Jeff Garzik
2003-12-03 0:47 ` Jamie Lokier
2003-12-07 5:33 ` Bill Davidsen
2003-12-01 21:36 ` Justin Cormack
-- strict thread matches above, loose matches on Subject: below --
2003-12-01 13:41 Xose Vazquez Perez
2003-12-01 14:11 ` Marcelo Tosatti
2003-12-02 19:59 ` Stephan von Krawczynski
2003-12-02 22:05 ` bill davidsen
2003-12-02 22:34 ` Jeff Garzik
2003-12-03 0:34 Xose Vazquez Perez
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