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

From: Alan Cox (
Date: Mon Feb 05 2001 - 14:04:44 EST

> Kiobufs have never, ever required the IO to be aligned on any
> particular boundary. They simply make the assumption that the
> underlying buffered object can be described in terms of pages with
> some arbitrary (non-aligned) start/offset. Every video framebuffer

start/length per page ?

> I've ever seen satisfies that, so you can easily map an arbitrary
> contiguous region of the framebuffer with a kiobuf already.

Video is non contiguous ranges. In fact if you are blitting to a card with
tiled memory it gets very interesting in its video lists

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

This archive was generated by hypermail 2b29 : Wed Feb 07 2001 - 21:00:22 EST