vfio/type1: Adopt fast IOTLB flush interface when unmap IOVAs

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VFIO IOMMU type1 currently upmaps IOVA pages synchronously, which requires
IOTLB flushing for every unmapping. This results in large IOTLB flushing
overhead when handling pass-through devices has a large number of mapped
IOVAs. This can be avoided by using the new IOTLB flushing interface.

Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
[aw - use LIST_HEAD]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

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Suravee Suthikulpanit 2018-03-21 12:46:19 -06:00 • committed by Alex Williamson

parent c698ca5278

commit 6bd06f5a48

1 changed files with 115 additions and 11 deletions

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drivers/vfio/vfio_iommu_type1.c

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