Messages in this thread | | | Subject | [RFC PATCH 0/3] vfio/type1: Reduce vfio_iommu.lock contention | From | Alex Williamson <> | Date | Thu, 16 Jan 2020 11:17:49 -0700 |
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Hi Yan,
I wonder if this might reduce the lock contention you're seeing in the vfio_dma_rw series. These are only compile tested on my end, so I hope they're not too broken to test. Thanks,
Alex
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Alex Williamson (3): vfio/type1: Convert vfio_iommu.lock from mutex to rwsem vfio/type1: Replace obvious read lock instances vfio/type1: Introduce pfn_list mutex
drivers/vfio/vfio_iommu_type1.c | 67 ++++++++++++++++++++++++--------------- 1 file changed, 41 insertions(+), 26 deletions(-)
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