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Hello, There is a trouble on ARM with DMA allocations made by device drivers, the trouble is that DMA allocations are getting implicitly backed with IOMMU mapping by the driver core if IOMMU presents in a system and IOMMU could handle device. This is an undesired behaviour for drivers that manage IOMMU by themselves, like NVIDIA Tegra GPU driver. On arm32 the implicit backing happens if

...he only part missing from kernel today > that is wanted by the native context drivers. Otherwise, there are few > other things in Qemu and virglrenderer left to sort out. > > [1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21658 > [2] > https://gitlab.freedesktop.org/digetx/mesa/-/commits/native-context-iris I'm not saying this change isn't good, just it's probably possible to implement the native contexts (even up to even VK1.2) without it. But this patch series may be the most ergonomic way to do it, given how Mesa is designed. But you probably want...

...ssing from kernel today >> that is wanted by the native context drivers. Otherwise, there are few >> other things in Qemu and virglrenderer left to sort out. >> >> [1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21658 >> [2] https://gitlab.freedesktop.org/digetx/mesa/-/commits/native-context-iris > > > I'm not saying this change isn't good, just it's probably possible to implement the native contexts (even up to even VK1.2) without it. But this patch series may be the most ergonomic way to do it, given how Mesa is designed. But you p...

...itry Kasatkin <dmitry.kasatkin@intel.com> Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Dmitry Kozlov <xeb@mail.ru> Dmitry Kravkov <dmitry@broadcom.com> Dmitry Lifshitz <lifshitz@compulab.co.il> Dmitry Monakhov <dmonakhov@openvz.org> Dmitry Osipenko <digetx@gmail.com> Dmitry Pervushin <dmitry.pervushin@linaro.org> Dmitry Popov <dp@highloadlab.com> Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com> Dmitry Shmygov <shmygov@rambler.ru> Dmitry Tarnyagin <Dmitry.Tarnyagin@stericsson.com> Dmitry Torokhov <dmitry....

...itry Kasatkin <dmitry.kasatkin@intel.com> Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Dmitry Kozlov <xeb@mail.ru> Dmitry Kravkov <dmitry@broadcom.com> Dmitry Lifshitz <lifshitz@compulab.co.il> Dmitry Monakhov <dmonakhov@openvz.org> Dmitry Osipenko <digetx@gmail.com> Dmitry Pervushin <dmitry.pervushin@linaro.org> Dmitry Popov <dp@highloadlab.com> Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com> Dmitry Shmygov <shmygov@rambler.ru> Dmitry Tarnyagin <Dmitry.Tarnyagin@stericsson.com> Dmitry Torokhov <dmitry....

...itry Kasatkin <dmitry.kasatkin@intel.com> Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Dmitry Kozlov <xeb@mail.ru> Dmitry Kravkov <dmitry@broadcom.com> Dmitry Lifshitz <lifshitz@compulab.co.il> Dmitry Monakhov <dmonakhov@openvz.org> Dmitry Osipenko <digetx@gmail.com> Dmitry Pervushin <dmitry.pervushin@linaro.org> Dmitry Popov <dp@highloadlab.com> Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com> Dmitry Shmygov <shmygov@rambler.ru> Dmitry Tarnyagin <Dmitry.Tarnyagin@stericsson.com> Dmitry Torokhov <dmitry....

...itry Kasatkin <dmitry.kasatkin@intel.com> Dmitry Kasatkin <dmitry.kasatkin@nokia.com> Dmitry Kozlov <xeb@mail.ru> Dmitry Kravkov <dmitry@broadcom.com> Dmitry Lifshitz <lifshitz@compulab.co.il> Dmitry Monakhov <dmonakhov@openvz.org> Dmitry Osipenko <digetx@gmail.com> Dmitry Pervushin <dmitry.pervushin@linaro.org> Dmitry Popov <dp@highloadlab.com> Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com> Dmitry Shmygov <shmygov@rambler.ru> Dmitry Tarnyagin <Dmitry.Tarnyagin@stericsson.com> Dmitry Torokhov <dmitry....

On Friday, 27 July 2018 12:03:28 MSK Will Deacon wrote: > On Fri, Jul 27, 2018 at 10:25:13AM +0200, Joerg Roedel wrote: > > On Fri, Jul 27, 2018 at 02:16:18AM +0300, Dmitry Osipenko wrote: > > > The proposed solution adds a new option to the base device driver > > > structure that allows device drivers to explicitly convey to the drivers > > > core that the

I think "ARM: tegra:" is wrong prefix for this patch and "soc: tegra:" should be used instead to show that it belongs to SoC driver, not arch code. -- Dmitry

On Friday, 27 July 2018 20:16:53 MSK Dmitry Osipenko wrote: > On Friday, 27 July 2018 20:03:26 MSK Jordan Crouse wrote: > > On Fri, Jul 27, 2018 at 05:02:37PM +0100, Robin Murphy wrote: > > > On 27/07/18 15:10, Dmitry Osipenko wrote: > > > >On Friday, 27 July 2018 12:03:28 MSK Will Deacon wrote: > > > >>On Fri, Jul 27, 2018 at 10:25:13AM +0200, Joerg

On Friday, 27 July 2018 20:03:26 MSK Jordan Crouse wrote: > On Fri, Jul 27, 2018 at 05:02:37PM +0100, Robin Murphy wrote: > > On 27/07/18 15:10, Dmitry Osipenko wrote: > > >On Friday, 27 July 2018 12:03:28 MSK Will Deacon wrote: > > >>On Fri, Jul 27, 2018 at 10:25:13AM +0200, Joerg Roedel wrote: > > >>>On Fri, Jul 27, 2018 at 02:16:18AM +0300, Dmitry

On Friday, 3 August 2018 18:43:41 MSK Robin Murphy wrote: > On 02/08/18 19:24, Dmitry Osipenko wrote: > > On Friday, 27 July 2018 20:16:53 MSK Dmitry Osipenko wrote: > >> On Friday, 27 July 2018 20:03:26 MSK Jordan Crouse wrote: > >>> On Fri, Jul 27, 2018 at 05:02:37PM +0100, Robin Murphy wrote: > >>>> On 27/07/18 15:10, Dmitry Osipenko wrote: >