linux-kernel - [PATCH V3 4/9] virtio-pci: implement synchronize

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Date:   Mon, 25 Apr 2022 10:44:13 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     jasowang@...hat.com, mst@...hat.com, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Cc:     sgarzare@...hat.com, eperezma@...hat.com, lulu@...hat.com,
        tglx@...utronix.de, peterz@...radead.org, paulmck@...nel.org,
        maz@...nel.org, pasic@...ux.ibm.com, cohuck@...hat.com
Subject: [PATCH V3 4/9] virtio-pci: implement synchronize_cbs()

We can simply reuse vp_synchronize_vectors() for .synchronize_cbs().

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Halil Pasic <pasic@...ux.ibm.com>
Cc: Cornelia Huck <cohuck@...hat.com>
Signed-off-by: Jason Wang <jasowang@...hat.com>
---
 drivers/virtio/virtio_pci_common.h | 2 ++
 drivers/virtio/virtio_pci_legacy.c | 1 +
 drivers/virtio/virtio_pci_modern.c | 2 ++
 3 files changed, 5 insertions(+)

diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index eb17a29fc7ef..2b84d5c1b5bc 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -105,6 +105,8 @@ static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev)
 void vp_synchronize_vectors(struct virtio_device *vdev);
 /* the notify function used when creating a virt queue */
 bool vp_notify(struct virtqueue *vq);
+/* synchronize with callbacks */
+void vp_synchronize_vqs(struct virtio_device *vdev);
 /* the config->del_vqs() implementation */
 void vp_del_vqs(struct virtio_device *vdev);
 /* the config->find_vqs() implementation */
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index 6f4e34ce96b8..207985107150 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -192,6 +192,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
 	.reset		= vp_reset,
 	.find_vqs	= vp_find_vqs,
 	.del_vqs	= vp_del_vqs,
+	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
 	.finalize_features = vp_finalize_features,
 	.bus_name	= vp_bus_name,
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index a2671a20ef77..18c2190e3059 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -394,6 +394,7 @@ static const struct virtio_config_ops virtio_pci_config_nodev_ops = {
 	.reset		= vp_reset,
 	.find_vqs	= vp_modern_find_vqs,
 	.del_vqs	= vp_del_vqs,
+	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
 	.finalize_features = vp_finalize_features,
 	.bus_name	= vp_bus_name,
@@ -411,6 +412,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
 	.reset		= vp_reset,
 	.find_vqs	= vp_modern_find_vqs,
 	.del_vqs	= vp_del_vqs,
+	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
 	.finalize_features = vp_finalize_features,
 	.bus_name	= vp_bus_name,
-- 
2.25.1