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vdpa: Add custom IOTLB translations to SVQ

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Use translations added in VhostIOVATree in SVQ.

Only introduce usage here, not allocation and deallocation. As with
previous patches, we use the dead code paths of shadow_vqs_enabled to
avoid commiting too many changes at once. These are impossible to take
at the moment.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Eugenio Pérez 2022-03-14 18:34:51 +01:00 • committed by Jason Wang
parent ec6122d882
commit 34e3c94eda
4 changed files with 187 additions and 30 deletions
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6
hw/virtio/vhost-shadow-virtqueue.h
View file

@ -13,6 +13,7 @@
#include "qemu/event_notifier.h"
#include "hw/virtio/virtio.h"
#include "standard-headers/linux/vhost_types.h"
#include "hw/virtio/vhost-iova-tree.h"
/* Shadow virtqueue to relay notifications */
typedef struct VhostShadowVirtqueue {
@ -43,6 +44,9 @@ typedef struct VhostShadowVirtqueue {
/* Virtio device */
VirtIODevice *vdev;
/* IOVA mapping */
VhostIOVATree *iova_tree;
/* Map for use the guest's descriptors */
VirtQueueElement **ring_id_maps;
@ -75,7 +79,7 @@ void vhost_svq_start(VhostShadowVirtqueue *svq, VirtIODevice *vdev,
VirtQueue *vq);
void vhost_svq_stop(VhostShadowVirtqueue *svq);
VhostShadowVirtqueue *vhost_svq_new(void);
VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree);
void vhost_svq_free(gpointer vq);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(VhostShadowVirtqueue, vhost_svq_free);