diff options
Diffstat (limited to 'hw/virtio/vhost-vdpa.c')
| -rw-r--r-- | hw/virtio/vhost-vdpa.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 3cdaa12ed5..703dcfc929 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -360,14 +360,20 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); if (s->shadow_data) { int r; + hwaddr hw_vaddr = (hwaddr)(uintptr_t)vaddr; - mem_region.translated_addr = (hwaddr)(uintptr_t)vaddr, mem_region.size = int128_get64(llsize) - 1, mem_region.perm = IOMMU_ACCESS_FLAG(true, section->readonly), - r = vhost_iova_tree_map_alloc(s->iova_tree, &mem_region); + r = vhost_iova_tree_map_alloc(s->iova_tree, &mem_region, hw_vaddr); if (unlikely(r != IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); + + if (mem_region.translated_addr == hw_vaddr) { + error_report("Insertion to IOVA->HVA tree failed"); + /* Remove the mapping from the IOVA-only tree */ + goto fail_map; + } goto fail; } @@ -1142,16 +1148,23 @@ static void vhost_vdpa_svq_unmap_rings(struct vhost_dev *dev, * * @v: Vhost-vdpa device * @needle: The area to search iova + * @taddr: The translated address (HVA) * @errorp: Error pointer */ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle, - Error **errp) + hwaddr taddr, Error **errp) { int r; - r = vhost_iova_tree_map_alloc(v->shared->iova_tree, needle); + r = vhost_iova_tree_map_alloc(v->shared->iova_tree, needle, taddr); if (unlikely(r != IOVA_OK)) { error_setg(errp, "Cannot allocate iova (%d)", r); + + if (needle->translated_addr == taddr) { + error_append_hint(errp, "Insertion to IOVA->HVA tree failed"); + /* Remove the mapping from the IOVA-only tree */ + vhost_iova_tree_remove(v->shared->iova_tree, *needle); + } return false; } @@ -1192,11 +1205,11 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev, vhost_svq_get_vring_addr(svq, &svq_addr); driver_region = (DMAMap) { - .translated_addr = svq_addr.desc_user_addr, .size = driver_size - 1, .perm = IOMMU_RO, }; - ok = vhost_vdpa_svq_map_ring(v, &driver_region, errp); + ok = vhost_vdpa_svq_map_ring(v, &driver_region, svq_addr.desc_user_addr, + errp); if (unlikely(!ok)) { error_prepend(errp, "Cannot create vq driver region: "); return false; @@ -1206,11 +1219,11 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev, addr->avail_user_addr = driver_region.iova + avail_offset; device_region = (DMAMap) { - .translated_addr = svq_addr.used_user_addr, .size = device_size - 1, .perm = IOMMU_RW, }; - ok = vhost_vdpa_svq_map_ring(v, &device_region, errp); + ok = vhost_vdpa_svq_map_ring(v, &device_region, svq_addr.used_user_addr, + errp); if (unlikely(!ok)) { error_prepend(errp, "Cannot create vq device region: "); vhost_vdpa_svq_unmap_ring(v, driver_region.translated_addr); |