Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

# gpg: Signature made Tue 26 Jul 2022 09:47:24 BST
# gpg:                using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
  vdpa: Fix memory listener deletions of iova tree
  vhost: Get vring base from vq, not svq
  e1000e: Fix possible interrupt loss when using MSI

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 15 insertions, 13 deletions

diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index 2c51089..208e3e0 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -159,6 +159,8 @@ e1000e_intrmgr_on_throttling_timer(void *opaque)
 
     if (msi_enabled(timer->core->owner)) {
         trace_e1000e_irq_msi_notify_postponed();
+        /* Clear msi_causes_pending to fire MSI eventually */
+        timer->core->msi_causes_pending = 0;
         e1000e_set_interrupt_cause(timer->core, 0);
     } else {
         trace_e1000e_irq_legacy_notify_postponed();
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 291cd19..3ff9ce3 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -290,7 +290,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
 
         result = vhost_iova_tree_find_iova(v->iova_tree, &mem_region);
         iova = result->iova;
-        vhost_iova_tree_remove(v->iova_tree, &mem_region);
+        vhost_iova_tree_remove(v->iova_tree, result);
     }
     vhost_vdpa_iotlb_batch_begin_once(v);
     ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize));
@@ -1179,7 +1179,18 @@ static int vhost_vdpa_set_vring_base(struct vhost_dev *dev,
                                        struct vhost_vring_state *ring)
 {
     struct vhost_vdpa *v = dev->opaque;
+    VirtQueue *vq = virtio_get_queue(dev->vdev, ring->index);
 
+    /*
+     * vhost-vdpa devices does not support in-flight requests. Set all of them
+     * as available.
+     *
+     * TODO: This is ok for networking, but other kinds of devices might
+     * have problems with these retransmissions.
+     */
+    while (virtqueue_rewind(vq, 1)) {
+        continue;
+    }
     if (v->shadow_vqs_enabled) {
         /*
          * Device vring base was set at device start. SVQ base is handled by
@@ -1195,21 +1206,10 @@ static int vhost_vdpa_get_vring_base(struct vhost_dev *dev,
                                        struct vhost_vring_state *ring)
 {
     struct vhost_vdpa *v = dev->opaque;
-    int vdpa_idx = ring->index - dev->vq_index;
     int ret;
 
     if (v->shadow_vqs_enabled) {
-        VhostShadowVirtqueue *svq = g_ptr_array_index(v->shadow_vqs, vdpa_idx);
-
-        /*
-         * Setting base as last used idx, so destination will see as available
-         * all the entries that the device did not use, including the in-flight
-         * processing ones.
-         *
-         * TODO: This is ok for networking, but other kinds of devices might
-         * have problems with these retransmissions.
-         */
-        ring->num = svq->last_used_idx;
+        ring->num = virtio_queue_get_last_avail_idx(dev->vdev, ring->index);
         return 0;
     }