Hi Marek,
can chance you could retest the v2 version?
vb2_dc_get_userptr pokes into arm direct mapping details to get the
resemblance of a dma address for a a physical address that does is
not backed by a page struct. Not only is this not portable to other
architectures with dma direct mapping offsets, but also not to uses
of IOMMUs of any kind. Swi
Hi Christoph,
On 2019-01-17 18:21, Christoph Hellwig wrote:
> On Mon, Jan 14, 2019 at 01:42:26PM +0100, Marek Szyprowski wrote:
>> On 2019-01-11 19:17, Christoph Hellwig wrote:
>>> vb2_dc_get_userptr pokes into arm direct mapping details to get the
>>> resemblance of a dma address for a a physical
On Mon, Jan 14, 2019 at 01:42:26PM +0100, Marek Szyprowski wrote:
> Hi Christoph,
>
> On 2019-01-11 19:17, Christoph Hellwig wrote:
> > vb2_dc_get_userptr pokes into arm direct mapping details to get the
> > resemblance of a dma address for a a physical address that does is
> > not backed by a pag
Hi Christoph,
On 2019-01-11 19:17, Christoph Hellwig wrote:
> vb2_dc_get_userptr pokes into arm direct mapping details to get the
> resemblance of a dma address for a a physical address that does is
> not backed by a page struct. Not only is this not portable to other
> architectures with dma dir
On Mon, Jan 14, 2019 at 09:04:56AM -0200, Mauro Carvalho Chehab wrote:
> It would be good if you could later send us a stable branch where
> you merged, in order to allow us to run some tests with the new
> DMA mapping patchset and be sure that it won't cause regressions
> to videobuf2.
I can do t
Em Mon, 14 Jan 2019 11:31:39 +0100
Christoph Hellwig escreveu:
> On Fri, Jan 11, 2019 at 05:54:16PM -0200, Mauro Carvalho Chehab wrote:
> > Em Fri, 11 Jan 2019 19:17:31 +0100
> > Christoph Hellwig escreveu:
> >
> > > vb2_dc_get_userptr pokes into arm direct mapping details to get the
> > > re
On Fri, Jan 11, 2019 at 05:54:16PM -0200, Mauro Carvalho Chehab wrote:
> Em Fri, 11 Jan 2019 19:17:31 +0100
> Christoph Hellwig escreveu:
>
> > vb2_dc_get_userptr pokes into arm direct mapping details to get the
> > resemblance of a dma address for a a physical address that does is
> > not backed
Em Fri, 11 Jan 2019 19:17:31 +0100
Christoph Hellwig escreveu:
> vb2_dc_get_userptr pokes into arm direct mapping details to get the
> resemblance of a dma address for a a physical address that does is
> not backed by a page struct. Not only is this not portable to other
> architectures with dma
vb2_dc_get_userptr pokes into arm direct mapping details to get the
resemblance of a dma address for a a physical address that does is
not backed by a page struct. Not only is this not portable to other
architectures with dma direct mapping offsets, but also not to uses
of IOMMUs of any kind. Swi
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