Re: [RFC][PATCH] add dma_reserve_coherent_memory()/dma_free_reserved_memory() API

FUJITA Tomonori
2010-10-14T07:17:19Z

On Wed, 13 Oct 2010 19:42:56 +0300
Marin Mitov <mitov@issp.bas.bg> wrote:

> > > KAMEZAWA posted a patch to improve the generic page allocator to
> > > allocate physically contiguous memory. He said that he can push it
> > > into mainline.
> > >
> > I said I do make an effort ;)
> > New one here.
> >
> > http://lkml.org/lkml/2010/10/12/421

Kamezawa, Thanks a lot!!

> I like the patch. The possibility to allocate a contiguous chunk of memory
> (or few of them) is what I need. The next step wilfl be to get a dma handle
> (for dma transfers to/from) and then mmap them to user space.

Let's help him to push this patch to upstream first. The next step is
a different issue (and the dma stuff isn't even a problem; we can
handle it with the current API).