[v2] Fixes for map() path

[PATCH v2 0/2] Fixes for map() path

Brajesh Gupta posted 2 patches 6 days, 13 hours ago

Diff against v1 v3 v4
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drivers/gpu/drm/imagination/pvr_mmu.c | 19 ++++++++++++-------
drivers/gpu/drm/imagination/pvr_mmu.h |  2 +-
drivers/gpu/drm/imagination/pvr_vm.c  |  4 ++--
3 files changed, 15 insertions(+), 10 deletions(-)

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[PATCH v2 0/2] Fixes for map() path

Posted by Brajesh Gupta 6 days, 13 hours ago

Two changes in map() path fix a kernel crash and a map failure.

Patch 0 fixes error path handling which triggers a kernel crash.

Patch 1 fixes prealloc page table memory requirement for a mapping
which led to map failure due to running out of page table space.

Signed-off-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
---
Changes in v2:
- Update as per Alessio's feedback.
- Fixed variable name in the description. Move the error message to a new line.
- Link to v1: https://lore.kernel.org/r/20260902-mmu_fix-v1-0-c55a23fb7cab@imgtec.com

---
Brajesh Gupta (2):
      drm/imagination: Propagate map failures correctly from pvr_mmu_map_sgl()
      drm/imagination: Fix page count for page table for map() interface

 drivers/gpu/drm/imagination/pvr_mmu.c | 19 ++++++++++++-------
 drivers/gpu/drm/imagination/pvr_mmu.h |  2 +-
 drivers/gpu/drm/imagination/pvr_vm.c  |  4 ++--
 3 files changed, 15 insertions(+), 10 deletions(-)
---
base-commit: bd4f284df04d76fd65e57141cb1e6e7a49e4c3cb
change-id: 20260902-mmu_fix-3923aca60f60

Best regards,
-- 
Brajesh Gupta <brajesh.gupta@imgtec.com>