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Message-Id: <20220518035951.94220-6-jasowang@redhat.com>
Date: Wed, 18 May 2022 11:59:47 +0800
From: Jason Wang <jasowang@...hat.com>
To: mst@...hat.com, jasowang@...hat.com,
virtualization@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org
Cc: tglx@...utronix.de, peterz@...radead.org, paulmck@...nel.org,
maz@...nel.org, pasic@...ux.ibm.com, cohuck@...hat.com,
eperezma@...hat.com, lulu@...hat.com, sgarzare@...hat.com,
xuanzhuo@...ux.alibaba.com,
Vineeth Vijayan <vneethv@...ux.ibm.com>,
Peter Oberparleiter <oberpar@...ux.ibm.com>,
linux-s390@...r.kernel.org
Subject: [PATCH V5 5/9] virtio-mmio: implement synchronize_cbs()
Simply synchronize the platform irq that is used by us.
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>
Cc: Vineeth Vijayan <vneethv@...ux.ibm.com>
Cc: Peter Oberparleiter <oberpar@...ux.ibm.com>
Cc: linux-s390@...r.kernel.org
Reviewed-by: Cornelia Huck <cohuck@...hat.com>
Signed-off-by: Jason Wang <jasowang@...hat.com>
---
drivers/virtio/virtio_mmio.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 56128b9c46eb..4a3b66e4e198 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -345,6 +345,14 @@ static void vm_del_vqs(struct virtio_device *vdev)
free_irq(platform_get_irq(vm_dev->pdev, 0), vm_dev);
}
+
+static void vm_synchronize_cbs(struct virtio_device *vdev)
+{
+ struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
+
+ synchronize_irq(platform_get_irq(vm_dev->pdev, 0));
+}
+
static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned index,
void (*callback)(struct virtqueue *vq),
const char *name, bool ctx)
@@ -541,6 +549,7 @@ static const struct virtio_config_ops virtio_mmio_config_ops = {
.finalize_features = vm_finalize_features,
.bus_name = vm_bus_name,
.get_shm_region = vm_get_shm_region,
+ .synchronize_cbs = vm_synchronize_cbs,
};
--
2.25.1
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