Messages in this thread | | | Date | Thu, 7 May 2009 20:14:48 +0900 | Subject | Re: IOMMU and graphics cards | From | FUJITA Tomonori <> |
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On Thu, 7 May 2009 13:01:35 +0200 Ingo Molnar <mingo@elte.hu> wrote:
> > * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote: > > > > 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 don't know anything about the graphic drivers but are there any > > other proprietary drivers except for ATI and AMD? Fixing only two > > drivers to make the majority happy? > > ATI ~== AMD these days. The problem is Nvidia cards stuck into AMD > systems.
Oops, I meant ATI and Nvidia.
> I guess refusing those DMA accesses (and printing something > meaningful and relentlessly honest so that the user knows where the > problem comes from) is the proper solution.
Refusing DMA means that we will break these broken drivers. That's what David and I like. Yeah, telling users explicitly who is to blame for the problem is even better.
> There will be some > end-user moaning, there might be distros turning off the IOMMU code > summarily, but nvidia-in-AMD-box is an unfriendly alliance to begin > with.
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