linux-kernel - Re: [PATCH] x86: enable DMAR by default

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Message-Id: <1235674440.8730.119.camel@macbook.infradead.org>
Date:	Fri, 27 Feb 2009 03:54:00 +0900
From:	David Woodhouse <dwmw2@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Kyle McMartin <kyle@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: enable DMAR by default

On Thu, 2009-02-26 at 19:03 +0100, Ingo Molnar wrote:
> * Kyle McMartin <kyle@...radead.org> wrote:
> 
> > From: Kyle McMartin <kyle@...hat.com>
> > 
> > Now that the obvious bugs have been worked out, specifically 
> > the iwlagn issue, and the write buffer errata, DMAR should be 
> > safe to turn back on by default. (We've had it on since those 
> > patches were first written a few weeks ago, without any 
> > noticeable bug reports (most have been due to the dma-api 
> > debug patchset.))
> > 
> > Signed-off-by: Kyle McMartin <kyle@...hat.com>
> > 
> > ---
> > Probably 2.6.29 material, but should definitely go in for 2.6.30.
> 
> Definitely agreed on .30. Can do it in .29 as well if David and 
> the rest of the Cc: agrees.

Definitely. I wasn't any happier than you were with the patch which
disabled it in the first place.... but it was necessary at the time.

Enthusiastically-Acked-by: David Woodhouse <David.Woodhouse@...el.com>

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation

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