From: David Miller <davem@davemloft.net>
To: dwmw2@infradead.org
Cc: joerg.roedel@amd.com, fujita.tomonori@lab.ntt.co.jp,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
mingo@redhat.com, airlied@linux.ie
Subject: Re: IOMMU and graphics cards
Date: Thu, 07 May 2009 11:36:32 -0700 (PDT) [thread overview]
Message-ID: <20090507.113632.210373283.davem@davemloft.net> (raw)
In-Reply-To: <1241691721.3531.73.camel@macbook.infradead.org>
From: David Woodhouse <dwmw2@infradead.org>
Date: Thu, 07 May 2009 11:22:01 +0100
> On Thu, 2009-05-07 at 12:01 +0200, Joerg Roedel wrote:
>> > Looks like the DRM code uses the DMA API.
>>
>> The proprietary drivers make problems so far. For the ATI one I am in
>> contact with the developers to try to fix it. But I can't do anything
>> about the other proprietary driver I am aware of :-(
>
> I see no harm in "breaking" code which was already broken. If that's the
> only reason we're enabling the graphics workaround, let's turn it off.
Seriously, this is an enormous price to pay just for one bad apple
proprietary driver.
I can't believe the level of concessions some people are suggesting.
Let's not make IOMMU's basically useless by working around one broken
driver.
Proper interfaces for what this driver is trying to do have existed in
the kernel for 10+ years. There are no excuses, and it's time for
Nvidia to get with the game plan.
next prev parent reply other threads:[~2009-05-07 18:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-28 15:05 Joerg Roedel
2009-04-28 15:28 ` David Woodhouse
2009-04-28 16:04 ` Joerg Roedel
2009-05-07 7:47 ` FUJITA Tomonori
2009-05-07 10:01 ` Joerg Roedel
2009-05-07 10:22 ` David Woodhouse
2009-05-07 10:42 ` FUJITA Tomonori
2009-05-07 12:15 ` Joerg Roedel
2009-05-07 12:59 ` FUJITA Tomonori
2009-05-07 14:37 ` Joerg Roedel
2009-05-07 17:04 ` Christoph Hellwig
2009-05-07 18:36 ` David Miller [this message]
2009-05-08 9:35 ` Joerg Roedel
2009-07-06 12:26 ` David Woodhouse
2009-07-06 13:11 ` Joerg Roedel
2009-07-06 14:18 ` David Woodhouse
2009-07-06 21:35 ` Dave Airlie
2009-07-06 22:00 ` Dave Airlie
2009-07-07 8:54 ` Joerg Roedel
2009-07-07 15:24 ` Duran, Leo
2009-07-07 15:33 ` Duran, Leo
2009-07-07 15:36 ` David Woodhouse
2009-07-07 8:59 ` Joerg Roedel
2009-07-07 9:16 ` David Woodhouse
2009-07-07 9:05 ` David Woodhouse
2009-05-07 10:23 ` FUJITA Tomonori
2009-05-07 11:01 ` Ingo Molnar
2009-05-07 11:14 ` FUJITA Tomonori
2009-05-07 11:26 ` Ingo Molnar
2009-05-07 12:00 ` Joerg Roedel
2009-05-07 10:55 ` Ingo Molnar
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