Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-30 Thread Hridya Valsaraju
On Thu, Jul 29, 2021 at 9:52 PM John Stultz wrote: > > On Thu, Jul 29, 2021 at 12:24 AM Daniel Vetter wrote: > > > > On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: > > > As we now knew controlling dma_fence synchronization from userspace is > > > extremely dangerous and can not

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread John Stultz
On Thu, Jul 29, 2021 at 12:24 AM Daniel Vetter wrote: > > On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: > > As we now knew controlling dma_fence synchronization from userspace is > > extremely dangerous and can not only deadlock drivers but trivially also the > > whole kernel me

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Daniel Vetter
On Thu, Jul 29, 2021 at 2:25 PM Christian König wrote: > > Am 29.07.21 um 13:59 schrieb Daniel Vetter: > > On Thu, Jul 29, 2021 at 12:21 PM Christian König > > wrote: > >> Am 29.07.21 um 11:03 schrieb Daniel Vetter: > >>> On Thu, Jul 29, 2021 at 10:38 AM Christian König > >>> wrote: > Am 29

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Christian König
Am 29.07.21 um 13:59 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 12:21 PM Christian König wrote: Am 29.07.21 um 11:03 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 10:38 AM Christian König wrote: Am 29.07.21 um 09:23 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 09:03:30AM +0200, Chris

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Daniel Vetter
On Thu, Jul 29, 2021 at 12:21 PM Christian König wrote: > Am 29.07.21 um 11:03 schrieb Daniel Vetter: > > On Thu, Jul 29, 2021 at 10:38 AM Christian König > > wrote: > >> Am 29.07.21 um 09:23 schrieb Daniel Vetter: > >>> On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: > As w

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Christian König
Am 29.07.21 um 11:03 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 10:38 AM Christian König wrote: Am 29.07.21 um 09:23 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: As we now knew controlling dma_fence synchronization from userspace is extremely dan

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Daniel Vetter
On Thu, Jul 29, 2021 at 10:38 AM Christian König wrote: > Am 29.07.21 um 09:23 schrieb Daniel Vetter: > > On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: > >> As we now knew controlling dma_fence synchronization from userspace is > >> extremely dangerous and can not only deadlock

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Christian König
Am 29.07.21 um 09:23 schrieb Daniel Vetter: On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: As we now knew controlling dma_fence synchronization from userspace is extremely dangerous and can not only deadlock drivers but trivially also the whole kernel memory management. Ent

Re: [PATCH 3/3] dma-buf: nuke SW_SYNC debugfs files

2021-07-29 Thread Daniel Vetter
On Thu, Jul 29, 2021 at 09:03:30AM +0200, Christian König wrote: > As we now knew controlling dma_fence synchronization from userspace is > extremely dangerous and can not only deadlock drivers but trivially also the > whole kernel memory management. > > Entirely remove this option. We now have in