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virtio-mmio: implement synchronize_cbs()

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Simply synchronize the platform irq that is used by us.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Vineeth Vijayan <vneethv@linux.ibm.com>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220527060120.20964-6-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
This commit is contained in:
Jason Wang 2022-05-27 14:01:16 +08:00 committed by Michael S. Tsirkin
parent 48b3dd2438
commit 9e9b289328
1 changed files with 8 additions and 0 deletions
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8
drivers/virtio/virtio_mmio.c
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@ -345,6 +345,13 @@ 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 int index,
void (*callback)(struct virtqueue *vq),
const char *name, bool ctx)
@ -541,6 +548,7 @@ 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,
};