Hi Will et al,

These two patches address logic issues that occur when SMMU CMDQ spaces
are nearly exhausted at runtime. The problems become more pronounced
when multiple CPUs submit to a single queue, a common scenario under SVA
when shared buffers (used by both CPU and device) are being unmapped.


Thanks,

Jacob 



Alexander Grest (1):
  iommu/arm-smmu-v3: Improve CMDQ lock fairness and efficiency

Jacob Pan (1):
  iommu/arm-smmu-v3: Fix CMDQ timeout warning

 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 74 +++++++++++----------
 1 file changed, 40 insertions(+), 34 deletions(-)

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2.43.0