[PATCH 0/4] drm/panthor: More reset fixes

[Boris Brezillon]

On Thu,  2 May 2024 20:38:08 +0200
Boris Brezillon <boris.brezillon at collabora.com> wrote:

> Hello,
> 
> This is a collection of fixes for bugs found while chasing an
> unrecoverable fault leading to a device unplug (because of some
> other bugs that was introduced in my local dev branch).
> 
> The first patch makes sure we immediately reset the GPU on an
> unrecoverable fault, and following patches are fixing various
> NULL/invalid pointer derefs caused by use-after-free situations
> following a device unplug.
> 
> Regards,
> 
> Boris
> 
> Boris Brezillon (4):
>   drm/panthor: Force an immediate reset on unrecoverable faults
>   drm/panthor: Keep a ref to the VM at the panthor_kernel_bo level
>   drm/panthor: Reset the FW VM to NULL on unplug
>   drm/panthor: Call panthor_sched_post_reset() even if the reset failed

Queued to drm-misc-next-fixes.

> 
>  drivers/gpu/drm/panthor/panthor_device.c |  8 ++---
>  drivers/gpu/drm/panthor/panthor_device.h |  1 +
>  drivers/gpu/drm/panthor/panthor_fw.c     |  5 +--
>  drivers/gpu/drm/panthor/panthor_gem.c    |  8 +++--
>  drivers/gpu/drm/panthor/panthor_gem.h    |  8 +++--
>  drivers/gpu/drm/panthor/panthor_heap.c   |  8 ++---
>  drivers/gpu/drm/panthor/panthor_sched.c  | 40 +++++++++++++++++-------
>  drivers/gpu/drm/panthor/panthor_sched.h  |  2 +-
>  8 files changed, 51 insertions(+), 29 deletions(-)
>