This patch adds optional callbacks which get called when the VQ gets assigned
an eventfd for notifications, and when it gets assigned with a GSI.
This allows the device to pass the eventfds to 3rd parties which can use
them to notify and get notifications regarding the VQ.
Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
---
tools/kvm/include/kvm/virtio-trans.h | 2 ++
tools/kvm/virtio/pci.c | 6 ++++++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/include/kvm/virtio-trans.h b/tools/kvm/include/kvm/virtio-trans.h
index d9f4b95..e7c186e 100644
--- a/tools/kvm/include/kvm/virtio-trans.h
+++ b/tools/kvm/include/kvm/virtio-trans.h
@@ -20,6 +20,8 @@ struct virtio_ops {
int (*notify_vq)(struct kvm *kvm, void *dev, u32 vq);
int (*get_pfn_vq)(struct kvm *kvm, void *dev, u32 vq);
int (*get_size_vq)(struct kvm *kvm, void *dev, u32 vq);
+ void (*notify_vq_gsi)(struct kvm *kvm, void *dev, u32 vq, u32 gsi);
+ void (*notify_vq_eventfd)(struct kvm *kvm, void *dev, u32 vq, u32 efd);
};
struct virtio_trans_ops {
diff --git a/tools/kvm/virtio/pci.c b/tools/kvm/virtio/pci.c
index 1660f06..0737ae7 100644
--- a/tools/kvm/virtio/pci.c
+++ b/tools/kvm/virtio/pci.c
@@ -51,6 +51,9 @@ static int virtio_pci__init_ioeventfd(struct kvm *kvm, struct virtio_trans *vtra
ioeventfd__add_event(&ioevent);
+ if (vtrans->virtio_ops->notify_vq_eventfd)
+ vtrans->virtio_ops->notify_vq_eventfd(kvm, vpci->dev, vq, ioevent.fd);
+
return 0;
}
@@ -152,6 +155,9 @@ static bool virtio_pci__specific_io_out(struct kvm *kvm, struct virtio_trans *vt
gsi = irq__add_msix_route(kvm, &vpci->msix_table[vec].msg);
vpci->gsis[vpci->queue_selector] = gsi;
+ if (vtrans->virtio_ops->notify_vq_gsi)
+ vtrans->virtio_ops->notify_vq_gsi(kvm, vpci->dev,
+ vpci->queue_selector, gsi);
break;
}
};
--
1.7.8.rc1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
