Re: [PATCH 2/5] dma_map_sg_ring() helper

David Miller
2007-12-21T00:40:19Z

From: Rusty Russell <rusty@rustcorp.com.au>
Date: Fri, 21 Dec 2007 11:35:12 +1100

> On Friday 21 December 2007 11:00:27 FUJITA Tomonori wrote:
> > We need to pass the whole sg entries to the IOMMUs at a time.
>
> Hi Fujita,
>
> OK, it's certainly possible to have an arch override. For which
> architecture is this BTW?

SPARC64, POWERPC, maybe IA-64 etc.

Basically any platform that potentially does virtual
remamping and thus linearization.

I think it should always be provided, the new APIs give
less information to the implementation and that's a step
backwards.