vfio/spapr_tce: Set window when adding additional groups to container
authorAlexey Kardashevskiy <aik@ozlabs.ru>
Tue, 7 Feb 2017 06:26:57 +0000 (17:26 +1100)
committerAlex Williamson <alex.williamson@redhat.com>
Tue, 7 Feb 2017 18:48:16 +0000 (11:48 -0700)
commit930a42ded3fede7ca3acafc9153f4f2d0f56a92c
tree7702a14229684c63fd7de1caa8440f17e5fad392
parentd5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c
vfio/spapr_tce: Set window when adding additional groups to container

If a container already has a group attached, attaching a new group
should just program already created IOMMU tables to the hardware via
the iommu_table_group_ops::set_window() callback.

However commit 6f01cc692a16 ("vfio/spapr: Add a helper to create
default DMA window") did not just simplify the code but also removed
the set_window() calls in the case of attaching groups to a container
which already has tables so it broke VFIO PCI hotplug.

This reverts set_window() bits in tce_iommu_take_ownership_ddw().

Fixes: 6f01cc692a16 ("vfio/spapr: Add a helper to create default DMA window")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
drivers/vfio/vfio_iommu_spapr_tce.c