lkml.org 
[lkml]   [2001]   [Jan]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 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/

\
 
 \ /
  Last update: 2005-03-22 13:13    [W:0.086 / U:2.984 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site