linux-kernel - Re: [RFC][PATCH] add dma_reserve_coherent_memory()/dma_free_reserved

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Message-Id: <20101014161204I.fujita.tomonori@lab.ntt.co.jp>
Date:	Thu, 14 Oct 2010 16:16:52 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	mitov@...p.bas.bg, kamezawa.hiroyu@...fujitsu.com
Cc:	fujita.tomonori@....ntt.co.jp, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, g.liakhovetski@....de
Subject: Re: [RFC][PATCH] add
 dma_reserve_coherent_memory()/dma_free_reserved_memory() API

On Wed, 13 Oct 2010 19:42:56 +0300
Marin Mitov <mitov@...p.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).
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