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| author | Cindy Lu <lulu@redhat.com> | 2022-12-22 15:04:42 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-01-08 01:54:22 -0500 |
| commit | 544f0278afcab2bebab61b14e4c2c58e65911f5b (patch) | |
| tree | ba1f9052a42d1e1d0f714d8dd56598dabdcd5938 /hw/display | |
| parent | c9bdc449f97422e62dc802fd2cbe11b840195595 (diff) | |
| download | qemu-544f0278afcab2bebab61b14e4c2c58e65911f5b.zip qemu-544f0278afcab2bebab61b14e4c2c58e65911f5b.tar.gz qemu-544f0278afcab2bebab61b14e4c2c58e65911f5b.tar.bz2 | |
virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX
To support configure interrupt for vhost-vdpa
Introduce VIRTIO_CONFIG_IRQ_IDX -1 as configure interrupt's queue index,
Then we can reuse the functions guest_notifier_mask and guest_notifier_pending.
Add the check of queue index in these drivers, if the driver does not support
configure interrupt, the function will just return
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20221222070451.936503-2-lulu@redhat.com>
Acked-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/display')
| -rw-r--r-- | hw/display/vhost-user-gpu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 19c0e20..4380a5e 100644 --- a/hw/display/vhost-user-gpu.c +++ b/hw/display/vhost-user-gpu.c @@ -486,6 +486,15 @@ vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx) { VhostUserGPU *g = VHOST_USER_GPU(vdev); + /* + * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1 + * as the Marco of configure interrupt's IDX, If this driver does not + * support, the function will return + */ + + if (idx == VIRTIO_CONFIG_IRQ_IDX) { + return false; + } return vhost_virtqueue_pending(&g->vhost->dev, idx); } @@ -494,6 +503,15 @@ vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask) { VhostUserGPU *g = VHOST_USER_GPU(vdev); + /* + * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1 + * as the Marco of configure interrupt's IDX, If this driver does not + * support, the function will return + */ + + if (idx == VIRTIO_CONFIG_IRQ_IDX) { + return; + } vhost_virtqueue_mask(&g->vhost->dev, vdev, idx, mask); } |