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Date: Wed, 29 May 2024 09:32:16 +0200
From: Boris Brezillon <boris.brezillon@collabora.com>
To: =?UTF-8?B?QWRyacOhbg==?= Larumbe <adrian.larumbe@collabora.com>
Cc: Rob Herring <robh@kernel.org>, Steven Price <steven.price@arm.com>,
 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Maxime Ripard
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 <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, Sumit Semwal
 <sumit.semwal@linaro.org>, Christian =?UTF-8?B?S8O2bmln?=
 <christian.koenig@amd.com>, Dmitry Osipenko
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 kernel@collabora.com, dri-devel@lists.freedesktop.org,
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Subject: Re: [PATCH v4 0/3] drm: Fix dma_resv deadlock at drm object pin
 time
Message-ID: <20240529093216.6640d05d@collabora.com>
In-Reply-To: <20240523113236.432585-1-adrian.larumbe@collabora.com>
References: <20240523113236.432585-1-adrian.larumbe@collabora.com>
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On Thu, 23 May 2024 12:32:16 +0100
Adri=C3=A1n Larumbe <adrian.larumbe@collabora.com> wrote:

> This is v4 of https://lore.kernel.org/lkml/20240521181817.097af5e1@collab=
ora.com/T/
>=20
> The goal of this patch series is fixing a deadlock upon locking the dma r=
eservation
> of a DRM gem object when pinning it, at a prime import operation.
>=20
> Changelog:
> v3:
>  - Split driver fixes into separate commits for Panfrost and Lima
>  - Make drivers call drm_gem_shmem_pin_locked instead of drm_gem_shmem_ob=
ject_pin
>  - Improved commit message for first patch to explain why dma resv lockin=
g in the=20
>  pin callback is no longer necessary.
> v2:
>  - Removed comment explaining reason why an already-locked
> pin function replaced the locked variant inside Panfrost's
> object pin callback.
>  - Moved already-assigned attachment warning into generic
> already-locked gem object pin function
>=20
>=20
> Adri=C3=A1n Larumbe (3):
>   drm/panfrost: Fix dma_resv deadlock at drm object pin time
>   drm/lima: Fix dma_resv deadlock at drm object pin time
>   drm/gem-shmem: Add import attachment warning to locked pin function

Queued to drm-misc-fixes.

Thanks!

Boris