SYS-OSS/FRET-qemu
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

virtio-iommu: Fix migration regression

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
hw/virtio/virtio-iommu.c
View File

@ -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;
}