Re: Freebios2 recovery progress... pci64 mem optimization

[Li-Ta Lo]

On Thu, 2004-10-21 at 20:08, Eric W. Biederman wrote:
> YhLu  writes:
> > If no agp,
> > Still need gart?
> >
> > YH
> >
> > PCI: 00:18.3 94 <- [0x00f8000000 - 0x00fbffffff] mem <gart>
> > PCI: 00:19.3 94 <- [0x00f8000000 - 0x00fbffffff] mem <gart>
>
> With more than 4GB of memory it is used as an IOMMU so you don't
> need bounce buffers.

Could you tell me more about this ? Is "bounce buffer" that bounce
buffer for PCI DMA in the kernel ? How does an AGP aperture solve
it ?

Ollie