On Fri, Sep 3, 2021, at 17:45, Robin Murphy wrote:
> On 2021-09-03 16:16, Sven Peter wrote:
> >
> >
> > On Thu, Sep 2, 2021, at 21:42, Robin Murphy wrote:
> >> On 2021-09-02 19:19, Sven Peter wrote:
> >>>
> >>>
> >>> On Wed, Sep 1, 2021, at 23:10, Alyssa Rosenzweig wrote:
> > My biggest
> > On the IOMMU API level you have much more information available about the
> > actual
> > hardware and can prepare the buffers in a way that makes both devices happy.
> > That's why iommu_map_sgtable combined with iovad->granule aligned sgt
> > entries
> > can actually guarantee to map the
On 2021-09-03 16:16, Sven Peter wrote:
On Thu, Sep 2, 2021, at 21:42, Robin Murphy wrote:
On 2021-09-02 19:19, Sven Peter wrote:
On Wed, Sep 1, 2021, at 23:10, Alyssa Rosenzweig wrote:
My biggest issue is that I do not understand how this function is supposed
to be used correctly. It
On Thu, Sep 2, 2021, at 21:42, Robin Murphy wrote:
> On 2021-09-02 19:19, Sven Peter wrote:
> >
> >
> > On Wed, Sep 1, 2021, at 23:10, Alyssa Rosenzweig wrote:
> >>> My biggest issue is that I do not understand how this function is supposed
> >>> to be used correctly. It would work fine as-is
On 2021-09-02 19:19, Sven Peter wrote:
On Wed, Sep 1, 2021, at 23:10, Alyssa Rosenzweig wrote:
My biggest issue is that I do not understand how this function is supposed
to be used correctly. It would work fine as-is if it only ever gets passed
buffers
allocated by the coherent API but
On Wed, Sep 1, 2021, at 23:10, Alyssa Rosenzweig wrote:
> > My biggest issue is that I do not understand how this function is supposed
> > to be used correctly. It would work fine as-is if it only ever gets passed
> > buffers
> > allocated by the coherent API but there's not way to check or
> My biggest issue is that I do not understand how this function is supposed
> to be used correctly. It would work fine as-is if it only ever gets passed
> buffers
> allocated by the coherent API but there's not way to check or guarantee that.
> There may also be callers making assumptions that
On Tue, Aug 31, 2021, at 23:30, Alyssa Rosenzweig wrote:
> I use this function for cross-device sharing on the M1 display driver.
> Arguably this is unsafe but it works on 16k kernels and if you want to
> test the function on 4k, you know where my code is.
>
My biggest issue is that I do not
I use this function for cross-device sharing on the M1 display driver.
Arguably this is unsafe but it works on 16k kernels and if you want to
test the function on 4k, you know where my code is.
On Sat, Aug 28, 2021 at 05:36:37PM +0200, Sven Peter wrote:
> Pretend that iommu_dma_get_sgtable is not
Pretend that iommu_dma_get_sgtable is not implemented when
granule > PAGE_SIZE since I can neither test this function right now
nor do I fully understand how it is used.
Signed-off-by: Sven Peter
---
drivers/iommu/dma-iommu.c | 6 ++
1 file changed, 6 insertions(+)
diff --git
10 matches
Mail list logo
