Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains

Alan Cox
2001-02-05T17:30:59Z

> > kiovec_align(kiovec, 512);
> > and have it do the bounce buffers ?
>
> _All_ drivers would have to do that in the degenerate case, because
> none of our drivers can deal with a dma boundary in the middle of a
> sector, and even in those places where the hardware supports it in
> theory, you are still often limited to word-alignment.

Thats true for _block_ disk devices but if we want a generic kiovec then
if I am going from video capture to network I dont need to force anything more
than 4 byte align