Re: [PATCH v4 0/6] drm/panthor: Misc fixes

[Boris Brezillon <boris.brezillon@collabora.com>]

On Fri, 28 Nov 2025 09:48:34 +0100
Boris Brezillon <boris.brezillon@collabora.com> wrote:

> Hello,
> 
> This is a set of fixes for bugs I ran into while looking at [1].
> Hopefully that's enough to recover from AS_ACTIVE bit stuck
> situations, but it'd be good to understand why the MMU block is
> completely blocked in some cases and try to come up with better
> mitigations than a full GPU reset.
> 
> This v4 is here to address a conflict caused by other panthor
> patches being merged before this one.
> 
> Regards,
> 
> Boris
> 
> [1]https://gitlab.freedesktop.org/panfrost/linux/-/issues/57
> 
> Boris Brezillon (6):
>   drm/panthor: Always wait after sending a command to an AS
>   drm/panthor: Kill lock_region()
>   drm/panthor: Recover from panthor_gpu_flush_caches() failures
>   drm/panthor: Add support for atomic page table updates
>   drm/panthor: Make panthor_vm_[un]map_pages() more robust
>   drm/panthor: Relax a check in panthor_sched_pre_reset()

Queued to drm-misc-next.

> 
>  drivers/gpu/drm/panthor/panthor_gpu.c   |  19 +-
>  drivers/gpu/drm/panthor/panthor_mmu.c   | 280 +++++++++++++-----------
>  drivers/gpu/drm/panthor/panthor_sched.c |   2 -
>  3 files changed, 166 insertions(+), 135 deletions(-)
>