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
---
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(-)
