[Linaro-mm-sig] [RFC v2 1/2] dma-buf: Introduce dma buffer sharing mechanism
sumit.semwal at ti.com
Fri Dec 23 02:00:18 PST 2011
On Wed, Dec 21, 2011 at 10:57 PM, Arnd Bergmann <arnd at arndb.de> wrote:
> On Tuesday 20 December 2011, Daniel Vetter wrote:
>> > I'm thinking for a first version, we can get enough mileage out of it by saying:
>> > 1) only exporter can mmap to userspace
>> > 2) only importers that do not need CPU access to buffer..
Thanks Rob - and the exporter can do the mmap outside of dma-buf
usage, right? I mean, we don't need to provide an mmap to dma_buf()
and restrict it to exporter, when the exporter has more 'control' of
the buffer anyways.
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