diff mbox series

[PULL,05/12] virtio-iommu: Fix migration regression

Message ID 20220628044201.217173-6-mst@redhat.com
State New
Headers show
Series [PULL,01/12] virtio-iommu: Fix the partial copy of probe request | expand

Commit Message

Michael S. Tsirkin June 28, 2022, 4:42 a.m. UTC 
From: Zhenzhong Duan <zhenzhong.duan@intel.com>

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>
---
 hw/virtio/virtio-iommu.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 08b227e828..281152d338 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -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;
 }