On Mon, 2017-07-17 at 09:06 -0700, Vineet Gupta wrote:
> Hi Christoph,
>
> On 07/16/2017 11:42 PM, Christoph Hellwig wrote:
> >
> > I would expect that it would support any contiguous range in
> > the kernel mapping (e.g. no vmalloc and friends). But it's not
> > documented anywhere, and if no i
Hi Christoph,
On 07/16/2017 11:42 PM, Christoph Hellwig wrote:
I would expect that it would support any contiguous range in
the kernel mapping (e.g. no vmalloc and friends). But it's not
documented anywhere, and if no in kernel users makes use of that
fact at the moment it might be better to do
I would expect that it would support any contiguous range in
the kernel mapping (e.g. no vmalloc and friends). But it's not
documented anywhere, and if no in kernel users makes use of that
fact at the moment it might be better to document a page size
limitation and add asserts to enforce it.
P.S. Apologies in advance for the explicit TO list, it seemed adding people who've
touched the dma mapping code (for ARC atleast), would respond sooner ;-)
The question is does dma_map_single() imply a single region (possibly > PAGE_SIZE)
or does it imply PAGE_SIZE. Documentation/DMA-API* is no
