From 544f0278afcab2bebab61b14e4c2c58e65911f5b Mon Sep 17 00:00:00 2001 From: Cindy Lu Date: Thu, 22 Dec 2022 15:04:42 +0800 Subject: 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 Message-Id: <20221222070451.936503-2-lulu@redhat.com> Acked-by: Jason Wang Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/display/vhost-user-gpu.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'hw/display/vhost-user-gpu.c') diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 19c0e20103..4380a5e672 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); } -- cgit 1.4.1