diff options
| author | Tiwei Bie <tiwei.bie@intel.com> | 2018-04-12 23:12:30 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-05-23 17:01:54 +0300 |
| commit | 6f80e6170ede13605817e5c0ca73db0de7bdf261 (patch) | |
| tree | edcba467d4b332f7edd1b2776cfdbb503745caf8 /include/hw/virtio | |
| parent | 1f3a4519b1c107b5db2434b30638353978366b4d (diff) | |
virtio: support setting memory region based host notifier
This patch introduces the support for setting memory region
based host notifiers for virtio device. This is helpful when
using a hardware accelerator for a virtio device, because
hardware heavily depends on the notification, this will allow
the guest driver in the VM to notify the hardware directly.
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/virtio-bus.h | 2 | ||||
| -rw-r--r-- | include/hw/virtio/virtio.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index ced3d2d2b0..7fec9dc929 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -52,6 +52,8 @@ typedef struct VirtioBusClass { bool (*has_extra_state)(DeviceState *d); bool (*query_guest_notifiers)(DeviceState *d); int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign); + int (*set_host_notifier_mr)(DeviceState *d, int n, + MemoryRegion *mr, bool assign); void (*vmstate_change)(DeviceState *d, bool running); /* * Expose the features the transport layer supports before diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 098bdaaea3..9c1fa07d6d 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -239,6 +239,8 @@ void virtio_queue_set_align(VirtIODevice *vdev, int n, int align); void virtio_queue_notify(VirtIODevice *vdev, int n); uint16_t virtio_queue_vector(VirtIODevice *vdev, int n); void virtio_queue_set_vector(VirtIODevice *vdev, int n, uint16_t vector); +int virtio_queue_set_host_notifier_mr(VirtIODevice *vdev, int n, + MemoryRegion *mr, bool assign); int virtio_set_status(VirtIODevice *vdev, uint8_t val); void virtio_reset(void *opaque); void virtio_update_irq(VirtIODevice *vdev); |