drm/msm/a5xx: fix context faults during ring switch

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[ Upstream commit 32e7083429 ]

The rptr_addr is set in the preempt_init_ring(), which is called from
a5xx_gpu_init(). It uses shadowptr() to set the address, however the
shadow_iova is not yet initialized at that time. Move the rptr_addr
setting to the a5xx_preempt_hw_init() which is called after setting the
shadow_iova, getting the correct value for the address.

Fixes: 8907afb476 ("drm/msm: Allow a5xx to mark the RPTR shadow as privileged")
Suggested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/522640/
Link: https://lore.kernel.org/r/20230214020956.164473-5-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Dmitry Baryshkov 2023-02-14 05:09:56 +03:00 • committed by Greg Kroah-Hartman

parent ac3af300a2

commit 56d67b9788

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/msm/adreno/a5xx_preempt.c

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