diff mbox series

[V3,8/9] vfio/type1: implement notify callback

Message ID 1611939252-7240-9-git-send-email-steven.sistare@oracle.com (mailing list archive)
State New, archived
Headers show
Series vfio virtual address update | expand

Commit Message

Steven Sistare Jan. 29, 2021, 4:54 p.m. UTC 
Implement a notify callback that remembers if the container's file
descriptor has been closed.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
 drivers/vfio/vfio_iommu_type1.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Comments

Cornelia Huck Feb. 1, 2021, 12:40 p.m. UTC | #1 
On Fri, 29 Jan 2021 08:54:11 -0800
Steve Sistare <steven.sistare@oracle.com> wrote:

> Implement a notify callback that remembers if the container's file
> descriptor has been closed.
> 
> Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
> ---
>  drivers/vfio/vfio_iommu_type1.c | 15 +++++++++++++++

For the version in Alex' git branch:

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
diff mbox series

Patch

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index cbe3c65..b74a5f3 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -74,6 +74,7 @@  struct vfio_iommu {
 	bool			nesting;
 	bool			dirty_page_tracking;
 	bool			pinned_page_dirty_scope;
+	bool			container_open;
 	int			vaddr_invalid_count;
 };
 
@@ -2529,6 +2530,7 @@  static void *vfio_iommu_type1_open(unsigned long arg)
 	iommu->dma_list = RB_ROOT;
 	iommu->dma_avail = dma_entry_limit;
 	iommu->vaddr_invalid_count = 0;
+	iommu->container_open = true;
 	mutex_init(&iommu->lock);
 	BLOCKING_INIT_NOTIFIER_HEAD(&iommu->notifier);
 
@@ -3055,6 +3057,18 @@  static int vfio_iommu_type1_dma_rw(void *iommu_data, dma_addr_t user_iova,
 	return ret;
 }
 
+static void vfio_iommu_type1_notify(void *iommu_data, unsigned int event,
+				    void *data)
+{
+	struct vfio_iommu *iommu = iommu_data;
+
+	if (event != VFIO_DRIVER_NOTIFY_CONTAINER_CLOSE)
+		return;
+	mutex_lock(&iommu->lock);
+	iommu->container_open = false;
+	mutex_unlock(&iommu->lock);
+}
+
 static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
 	.name			= "vfio-iommu-type1",
 	.owner			= THIS_MODULE,
@@ -3068,6 +3082,7 @@  static int vfio_iommu_type1_dma_rw(void *iommu_data, dma_addr_t user_iova,
 	.register_notifier	= vfio_iommu_type1_register_notifier,
 	.unregister_notifier	= vfio_iommu_type1_unregister_notifier,
 	.dma_rw			= vfio_iommu_type1_dma_rw,
+	.notify			= vfio_iommu_type1_notify,
 };
 
 static int __init vfio_iommu_type1_init(void)