linux-kernel - Re: [PATCH v2 0/8] drm/lima: fixes and improvements to error recovery

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Message-ID: <CAKGbVbtAe5jnAwb7O8epq3g4FqLC-ggof3D=5gO9hJf5OuH0OQ@mail.gmail.com>
Date: Tue, 30 Jan 2024 09:07:36 +0800
From: Qiang Yu <yuq825@...il.com>
To: Erico Nunes <nunes.erico@...il.com>
Cc: anarsoul@...il.com, christian.koenig@....com, 
	dri-devel@...ts.freedesktop.org, lima@...ts.freedesktop.org, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	Sumit Semwal <sumit.semwal@...aro.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/8] drm/lima: fixes and improvements to error recovery

Serial is Reviewed-by: QIang Yu <yuq825@...il.com>

On Wed, Jan 24, 2024 at 11:00 AM Erico Nunes <nunes.erico@...il.com> wrote:
>
> v1 reference:
> https://patchwork.kernel.org/project/dri-devel/cover/20240117031212.1104034-1-nunes.erico@gmail.com/
>
> Changes v1 -> v2:
> - Dropped patch 1 which aimed to fix
> https://gitlab.freedesktop.org/mesa/mesa/-/issues/8415 .
> That will require more testing and an actual fix to the irq/timeout
> handler race. It can be solved separately so I am deferring it to a
> followup patch and keeping that issue open.
>
> - Added patches 2 and 4 to cover "reset time out" and bus stop bit to
> hard reset in gp as well.
>
> - Added handling of all processors in synchronize_irq in patch 5 to
> cover multiple pp. Dropped unnecessary duplicate fence in patch 5.
>
> - Added patch 7 in v2. After some discussion in patch 4 (v1), it seems
> to be reasonable to bump our timeout value so that we further decrease
> the chance of users actually hitting any of these timeouts by default.
>
> - Reworked patch 8 in v2. Since I broadened the work to not only focus
> in pp anymore, I also included the change to the other blocks as well.
>
> - Collected some reviews and acks in unmodified patches.
>
>
> Erico Nunes (8):
>   drm/lima: reset async_reset on pp hard reset
>   drm/lima: reset async_reset on gp hard reset
>   drm/lima: set pp bus_stop bit before hard reset
>   drm/lima: set gp bus_stop bit before hard reset
>   drm/lima: handle spurious timeouts due to high irq latency
>   drm/lima: remove guilty drm_sched context handling
>   drm/lima: increase default job timeout to 10s
>   drm/lima: standardize debug messages by ip name
>
>  drivers/gpu/drm/lima/lima_ctx.c      |  2 +-
>  drivers/gpu/drm/lima/lima_ctx.h      |  1 -
>  drivers/gpu/drm/lima/lima_gp.c       | 39 +++++++++++++++++++++-------
>  drivers/gpu/drm/lima/lima_l2_cache.c |  6 +++--
>  drivers/gpu/drm/lima/lima_mmu.c      | 18 ++++++-------
>  drivers/gpu/drm/lima/lima_pmu.c      |  3 ++-
>  drivers/gpu/drm/lima/lima_pp.c       | 37 ++++++++++++++++++++------
>  drivers/gpu/drm/lima/lima_sched.c    | 38 ++++++++++++++++++++++-----
>  drivers/gpu/drm/lima/lima_sched.h    |  3 +--
>  9 files changed, 107 insertions(+), 40 deletions(-)
>
> --
> 2.43.0
>