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[PATCH 3/3] virtio-iommu: Add an assert check in translate routine
From: |
Zhenzhong Duan |
Subject: |
[PATCH 3/3] virtio-iommu: Add an assert check in translate routine |
Date: |
Mon, 13 Jun 2022 14:10:10 +0800 |
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>
---
hw/virtio/virtio-iommu.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 73d5bde9d122..7c122ab95780 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -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);
--
2.25.1