2022-05-09 06:20:23

by Jason Wang

Subject: [PATCH V4 5/9] virtio-mmio: implement synchronize_cbs()

Simply synchronize the platform irq that is used by us.

Cc: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: "Paul E. McKenney" <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: Halil Pasic <[email protected]>
Cc: Cornelia Huck <[email protected]>
Signed-off-by: Jason Wang <[email protected]>
---
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

2022-05-09 15:42:46

by Cornelia Huck

Subject: Re: [PATCH V4 5/9] virtio-mmio: implement synchronize_cbs()

On Sat, May 07 2022, Jason Wang <[email protected]> wrote:

> Simply synchronize the platform irq that is used by us.
>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Peter Zijlstra <[email protected]>
> Cc: "Paul E. McKenney" <[email protected]>
> Cc: Marc Zyngier <[email protected]>
> Cc: Halil Pasic <[email protected]>
> Cc: Cornelia Huck <[email protected]>
> Signed-off-by: Jason Wang <[email protected]>
> ---
> drivers/virtio/virtio_mmio.c | 9 +++++++++
> 1 file changed, 9 insertions(+)

Reviewed-by: Cornelia Huck <[email protected]>