diff options
| author | Zhenzhong Duan | 2022-06-13 08:10:09 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2022-06-16 18:54:58 +0200 |
| commit | 08f2030a2e46f1e93d186b3a683e5caef1df562b (patch) | |
| tree | 9fbf3e5b3fa30a34c0994673e596754b53aca7a1 /include/hw/virtio | |
| parent | virtio-iommu: Add bypass mode support to assigned device (diff) | |
| download | qemu-08f2030a2e46f1e93d186b3a683e5caef1df562b.tar.gz qemu-08f2030a2e46f1e93d186b3a683e5caef1df562b.tar.xz qemu-08f2030a2e46f1e93d186b3a683e5caef1df562b.zip | |
virtio-iommu: Use recursive lock to avoid deadlock
When switching address space with mutex lock hold, mapping will be
replayed for assigned device. This will trigger relock deadlock.
Also release the mutex resource in unrealize routine.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220613061010.2674054-3-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/virtio-iommu.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h index 102eeefa73..2ad5ee320b 100644 --- a/include/hw/virtio/virtio-iommu.h +++ b/include/hw/virtio/virtio-iommu.h @@ -58,7 +58,7 @@ struct VirtIOIOMMU { ReservedRegion *reserved_regions; uint32_t nb_reserved_regions; GTree *domains; - QemuMutex mutex; + QemuRecMutex mutex; GTree *endpoints; bool boot_bypass; }; |