Re: [never mind] kiobufs and highmem

[Benjamin LaHaise]

On Fri, Jul 19, 2002 at 08:00:00AM -0700, William D Waddington wrote:
> Looks like three (?) options: go back to copying to a kernel DMA
> buffer for all cases (swell for performance), split the code path into
> map_user and copy_user branches (not that fond of spaghetti),
> or - in the highmem case - copy to a local buffer and populate the
> kiobuf with those pages and feed that to pci_map_sg().

Or use the PCI-DMA API function pci_map_single() that's documented in 
Documentation/DMA-mapping.txt to get a 64 bit pointer?  Don't forget to 
do a pci_set_dma_mask too, but that's mentioned in DMA-mapping.txt.

		-ben
-- 
"You will be reincarnated as a toad; and you will be much happier."