Messages in this thread | | | From | Andi Kleen <> | Subject | Re: PCI-DMA: Out of IOMMU space on x86-64 (Athlon64x2), with solution | Date | Fri, 3 Mar 2006 12:00:12 +0100 |
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On Friday 03 March 2006 09:16, Chris Wedgwood wrote: > On Thu, Mar 02, 2006 at 02:03:48AM +0100, Andi Kleen wrote: > > > Nvidia hardware SATA cannot directly DMA to > 4GB, so it has to go > > through the IOMMU. > > do you know if that is an actual hardware limitation or simply a > something we don't know how to do for lack of docs?
I assume that's a hardware limitation. I guess they'll move to AHCI at some point though - that should fix that.
> > > And in that kernel the Nforce ethernet driver also didn't do >4GB > > access, although the ethernet HW is theoretically capable. > > hrm, again, with a lack of docs is that likely to occur anytime soon?
That has been already fixed, just not in the kernel version Michael is using.
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