Hi Robin,
On 6/8/2017 7:51 AM, Robin Murphy wrote:
Hi all,
Here's the cleaned up nominally-final version of the patches everybody's
keen to see. #1 is just a non-critical thing-I-spotted-in-passing fix,
#2-#4 do some preparatory work (and bid farewell to everyone's least
favourite bit of code, hooray!), and #5-#8 do the dirty deed itself.
The branch I've previously shared has been updated too:
git://linux-arm.org/linux-rm iommu/pgtable
All feedback welcome, as I'd really like to land this for 4.13.
I tested the series on a QDF2400 development platform and see notable
performance improvements particularly in workloads that make concurrent
accesses to a single iommu_domain.
Robin.
Robin Murphy (8):
iommu/io-pgtable-arm-v7s: Check table PTEs more precisely
iommu/io-pgtable-arm: Improve split_blk_unmap
iommu/io-pgtable-arm-v7s: Refactor split_blk_unmap
iommu/io-pgtable: Introduce explicit coherency
iommu/io-pgtable-arm: Support lockless operation
iommu/io-pgtable-arm-v7s: Support lockless operation
iommu/arm-smmu: Remove io-pgtable spinlock
iommu/arm-smmu-v3: Remove io-pgtable spinlock
drivers/iommu/arm-smmu-v3.c | 36 ++-----
drivers/iommu/arm-smmu.c | 48 ++++------
drivers/iommu/io-pgtable-arm-v7s.c | 173 +++++++++++++++++++++------------
drivers/iommu/io-pgtable-arm.c | 190 ++++++++++++++++++++++++-------------
drivers/iommu/io-pgtable.h | 6 ++
5 files changed, 268 insertions(+), 185 deletions(-)
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