drm/msm: Convert vm locking

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Convert to using the gpuvm's r_obj for serializing access to the VM.
This way we can use the drm_exec helper for dealing with deadlock
detection and backoff.

This will let us deal with upcoming locking order conflicts with the
VM_BIND implmentation (ie. in some scenarious we need to acquire the obj
lock first, for ex. to iterate all the VMs an obj is bound in, and in
other scenarious we need to acquire the VM lock first).

Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Tested-by: Antonino Maniscalco <antomani103@gmail.com>
Reviewed-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/661478/

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Rob Clark 2025-06-29 13:12:57 -07:00 • committed by Rob Clark

parent 111fdd2198

commit fe4952b5f2

5 changed files with 151 additions and 39 deletions

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41

drivers/gpu/drm/msm/msm_gem.c

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37

drivers/gpu/drm/msm/msm_gem.h

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80

drivers/gpu/drm/msm/msm_gem_shrinker.c

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8

drivers/gpu/drm/msm/msm_gem_submit.c

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24

drivers/gpu/drm/msm/msm_gem_vma.c

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