Re: [Intel IOMMU 00/10] Intel IOMMU support, take #2

[Arjan van de Ven]

Andi Kleen wrote:
> On Tue, Jun 26, 2007 at 08:15:05AM -0700, Arjan van de Ven wrote:
> > > Also the user interface for X server case needs more work.
> > actually with the mode setting of X moving into the kernel... X won't 
> > use /dev/mem anymore at all
>
> We'll see if that happens. It has been talked about forever,
> but results are sparse. 

jbarnes posted the code a few weeks ago.

> > (and I think it mostly already doesn't even without that)
>
> It uses /sys/bus/pci/* which is not any better as seen from the IOMMU.
>
> Any interface will need to be explicit because user space needs to know which
> DMA addresses to put into the hardware. It's not enough to just transparently
> translate the mappings.

that's what DRM is used for nowadays...
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/