[v5] SMMU v3 CMDQ fix and improvement

[PATCH v5 0/3] SMMU v3 CMDQ fix and improvement

Jacob Pan posted 3 patches 1 week, 3 days ago

Diff against v2 v3 v4
Download series mbox

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 90 +++++++++++----------
1 file changed, 49 insertions(+), 41 deletions(-)

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[PATCH v5 0/3] SMMU v3 CMDQ fix and improvement

Posted by Jacob Pan 1 week, 3 days ago

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 (2):
  iommu/arm-smmu-v3: Parameterize wfe for CMDQ polling
  iommu/arm-smmu-v3: Fix CMDQ timeout warning

 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 90 +++++++++++----------
 1 file changed, 49 insertions(+), 41 deletions(-)

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2.43.0