Re: PCI DMA to small buffers on cache-incoherent arch

Oliver Neukum
2002-06-12T12:09:05Z

Am Mittwoch, 12. Juni 2002 13:47 schrieb David S. Miller:
> From: William Jhun <wjhun@ayrnetworks.com>
> Date: Mon, 10 Jun 2002 11:07:40 -0700
>
> On Sun, Jun 09, 2002 at 09:27:05PM -0700, David S. Miller wrote:
> > I'm trying to specify this such that knowledge of cachelines and
> > whatnot don't escape the arch specific code, ho hum... Looks like
> > that isn't possible.
>
> Perhaps provide macros in asm/pci.h that will:
>
> You don't understand, I think. I want to avoid the drivers doing
> any of the "align this, align that" stuff. I want the allocation
> to do it for them, that way the code is in one place.

That means that all buffers must be allocated seperately.
Is it worth that ? How about skbuffs ?

Regards
Oliver