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virtio-iommu: Fix migration regression

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We also need to switch to the right address space on dest side
after loading the device status. DMA to wrong address space is
destructive.

Fixes: 3facd774962fd ("virtio-iommu: Add bypass mode support to assigned device")
Suggested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220624093740.3525267-1-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
This commit is contained in:
Zhenzhong Duan 2022-06-24 17:37:40 +08:00 committed by Michael S. Tsirkin
parent ae50ae0b91
commit d355566bd9
1 changed files with 8 additions and 0 deletions
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8
hw/virtio/virtio-iommu.c
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@ -1322,6 +1322,14 @@ static int iommu_post_load(void *opaque, int version_id)
VirtIOIOMMU *s = opaque;
g_tree_foreach(s->domains, reconstruct_endpoints, s);
/*
* Memory regions are dynamically turned on/off depending on
* 'config.bypass' and attached domain type if there is. After
* migration, we need to make sure the memory regions are
* still correct.
*/
virtio_iommu_switch_address_space_all(s);
return 0;
}