Hi Dmitry,
> Thank you for the answer. Could you please give more information about:
> 1) Are you on software or hardware team, or both?
I am in the software team and has contributed to initial Tegra SMMU driver in
the downstream along with earlier team member Hiroshi Doyu.
> 2) Is SMMU a
On Wed, Apr 28, 2021 at 11:56:22AM -0300, Jason Gunthorpe wrote:
> On Wed, Apr 28, 2021 at 10:58:29AM +1000, David Gibson wrote:
> > On Tue, Apr 27, 2021 at 02:12:12PM -0300, Jason Gunthorpe wrote:
> > > On Tue, Apr 27, 2021 at 03:08:46PM +1000, David Gibson wrote:
> > > > > Starting from a BDF
On Wed, Apr 28, 2021 at 09:21:49PM -0300, Jason Gunthorpe wrote:
> On Wed, Apr 28, 2021 at 11:23:39AM +1000, David Gibson wrote:
>
> > Yes. My proposed model for a unified interface would be that when you
> > create a new container/IOASID, *no* IOVAs are valid.
>
> Hurm, it is quite tricky. All
On Wed, Apr 28, 2021 at 11:23:39AM +1000, David Gibson wrote:
> Yes. My proposed model for a unified interface would be that when you
> create a new container/IOASID, *no* IOVAs are valid.
Hurm, it is quite tricky. All IOMMUs seem to have a dead zone around
the MSI window, so negotiating this
On Wed, Apr 28, 2021 at 06:34:11AM +, Tian, Kevin wrote:
> > If /dev/ioasid is single HW page table only then I would focus on that
> > implementation and leave it to userspace to span different
> > /dev/ioasids if needed.
> >
> > > OK, now I see where the disconnection comes from. In my
On Wed, Apr 28, 2021 at 07:47:56AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Wednesday, April 28, 2021 1:12 AM
> >
> [...]
> > One option is VFIO can keep its group FD but nothing else will have
> > anthing like it. However I don't much like the idea that VFIO will
> > have a
On Wed, 28 Apr 2021 06:34:11 +
"Tian, Kevin" wrote:
> > From: Jason Gunthorpe
> > Sent: Monday, April 26, 2021 8:38 PM
> >
> [...]
> > > Want to hear your opinion for one open here. There is no doubt that
> > > an ioasid represents a HW page table when the table is constructed by
> > >
On Wed, Apr 28, 2021 at 10:58:29AM +1000, David Gibson wrote:
> On Tue, Apr 27, 2021 at 02:12:12PM -0300, Jason Gunthorpe wrote:
> > On Tue, Apr 27, 2021 at 03:08:46PM +1000, David Gibson wrote:
> > > > Starting from a BDF the general pseudo code is:
> > > > device_name =
Le Wed, Apr 28, 2021 at 11:06:10AM +0100, Robin Murphy a écrit :
> On 2021-04-28 09:42, Corentin Labbe wrote:
> > Hello
> >
> > I work on the crypto offloader driver of cortina/gemini SL3516 SoC.
> > I test it by filling a LUKS2 partition.
> > I got a reproductible problem when handling skcipher
On 2021-04-28 09:42, Corentin Labbe wrote:
Hello
I work on the crypto offloader driver of cortina/gemini SL3516 SoC.
I test it by filling a LUKS2 partition.
I got a reproductible problem when handling skcipher requests.
I use dma_map_sg() and when iterating other the result, sg_dma_address(sg)
On 26/04/2021 17:37, Claire Chang wrote:
On Fri, Apr 23, 2021 at 7:34 PM Steven Price wrote:
[...]
But even then if it's not and we have the situation where debugfs==NULL
then the debugfs_create_dir() here will cause a subsequent attempt in
swiotlb_create_debugfs() to fail (directory already
Hello
I work on the crypto offloader driver of cortina/gemini SL3516 SoC.
I test it by filling a LUKS2 partition.
I got a reproductible problem when handling skcipher requests.
I use dma_map_sg() and when iterating other the result, sg_dma_address(sg)
return 0.
But sg_dma_len(sg) is still
28.04.2021 08:57, Mikko Perttunen пишет:
> On 4/28/21 8:51 AM, Dmitry Osipenko wrote:
>> 23.04.2021 19:32, Thierry Reding пишет:
>>> Note that there will be no new releases of the bootloader for earlier
>>> devices, so adding support for these new DT bindings will not be
>>> practical. The
> From: Jason Gunthorpe
> Sent: Wednesday, April 28, 2021 1:12 AM
>
[...]
> One option is VFIO can keep its group FD but nothing else will have
> anthing like it. However I don't much like the idea that VFIO will
> have a special and unique programming model to do that same things
> other
> From: Jason Gunthorpe
> Sent: Wednesday, April 28, 2021 1:12 AM
>
[...]
> > As Alex says, if this line fails because of the group restrictions,
> > that's not great because it's not very obvious what's gone wrong.
>
> Okay, that is fair, but let's solve that problem directly. For
> instance
> From: Jason Gunthorpe
> Sent: Monday, April 26, 2021 8:38 PM
>
[...]
> > Want to hear your opinion for one open here. There is no doubt that
> > an ioasid represents a HW page table when the table is constructed by
> > userspace and then linked to the IOMMU through the bind/unbind
> > API. But
On 4/28/21 8:51 AM, Dmitry Osipenko wrote:
23.04.2021 19:32, Thierry Reding пишет:
Note that there will be no new releases of the bootloader for earlier
devices, so adding support for these new DT bindings will not be
practical. The bootloaders on those devices do pass information about
the
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