diff options
| author | Jason Wang <jasowang@redhat.com> | 2016-12-30 18:09:10 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-01-10 05:56:58 +0200 |
| commit | 8607f5c3072caeebbe0217df28651fffd3a79fd9 (patch) | |
| tree | 1510ec22428bb73d8dc8c719eee52eae33b43853 /hw/char | |
| parent | a08aaff811fb194950f79711d2afe5a892ae03a4 (diff) | |
virtio: convert to use DMA api
Currently, all virtio devices bypass IOMMU completely. This is because
address_space_memory is assumed and used during DMA emulation. This
patch converts the virtio core API to use DMA API. This idea is
- introducing a new transport specific helper to query the dma address
space. (only pci version is implemented).
- query and use this address space during virtio device guest memory
accessing when iommu platform (VIRTIO_F_IOMMU_PLATFORM) was enabled
for this device.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/char')
| -rw-r--r-- | hw/char/virtio-serial-bus.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c index 7975c2cda1..d544cd91c0 100644 --- a/hw/char/virtio-serial-bus.c +++ b/hw/char/virtio-serial-bus.c @@ -732,6 +732,7 @@ static void virtio_serial_post_load_timer_cb(void *opaque) static int fetch_active_ports_list(QEMUFile *f, VirtIOSerial *s, uint32_t nr_active_ports) { + VirtIODevice *vdev = VIRTIO_DEVICE(s); uint32_t i; s->post_load = g_malloc0(sizeof(*s->post_load)); @@ -765,7 +766,7 @@ static int fetch_active_ports_list(QEMUFile *f, qemu_get_be64s(f, &port->iov_offset); port->elem = - qemu_get_virtqueue_element(f, sizeof(VirtQueueElement)); + qemu_get_virtqueue_element(vdev, f, sizeof(VirtQueueElement)); /* * Port was throttled on source machine. Let's |