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virtio-iommu: Add an assert check in translate routine

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With address space switch supported, dma access translation only
happen after endpoint is attached to a non-bypass domain.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220613061010.2674054-4-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Zhenzhong Duan 2022-06-13 14:10:10 +08:00 committed by Michael S. Tsirkin
parent 08f2030a2e
commit 23b5f0ff6d
1 changed files with 4 additions and 0 deletions
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4
hw/virtio/virtio-iommu.c
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@ -865,6 +865,10 @@ static IOMMUTLBEntry virtio_iommu_translate(IOMMUMemoryRegion *mr, hwaddr addr,
qemu_rec_mutex_lock(&s->mutex);
ep = g_tree_lookup(s->endpoints, GUINT_TO_POINTER(sid));
if (bypass_allowed)
assert(ep && ep->domain && !ep->domain->bypass);
if (!ep) {
if (!bypass_allowed) {
error_report_once("%s sid=%d is not known!!", __func__, sid);