Messages in this thread | | | Date | Sun, 21 Jan 2001 12:37:31 -0500 | From | Johannes Erdfelt <> | Subject | Re: Inefficient PCI DMA usage (was: [experimental patch] UHCI updates) |
| |
On Sat, Jan 20, 2001, Russell King <rmk@arm.linux.org.uk> wrote: > Johannes Erdfelt writes: > > They need to be visible via DMA. They need to be 16 byte aligned. We > > also have QH's which have similar requirements, but we don't use as many > > of them. > > Can we get away from the "16 byte aligned" and make it "n byte aligned"? > I believe that slab already has support for this?
If you look at the part of the message that I quoted and you cut off, the requirements for UHCI are the data structures MUST be 16 byte aligned.
I don't mind if the API is more generalized, but those are the requirements that were asked about in this specific case.
JE
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
| |