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authorSteve Sistare <steven.sistare@oracle.com>2021-01-29 19:54:11 +0300
committerAlex Williamson <alex.williamson@redhat.com>2021-02-01 23:20:07 +0300
commit487ace1340536ea9b8daf8c783a397a467fe55fc (patch)
treefa0a7c8e295c34bc2a24f9d81b20d1cb36a0d396 /drivers/vfio
parentec5e32940cc9d2a8a321cb7d756fb6ae45702d03 (diff)
downloadlinux-487ace1340536ea9b8daf8c783a397a467fe55fc.tar.xz
vfio/type1: implement notify callback
Implement a notify callback that remembers if the container's file descriptor has been closed. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
-rw-r--r--drivers/vfio/vfio_iommu_type1.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 55b49bfac993..2109803bfb15 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -75,6 +75,7 @@ struct vfio_iommu {
bool nesting;
bool dirty_page_tracking;
bool pinned_page_dirty_scope;
+ bool container_open;
};
struct vfio_domain {
@@ -2520,6 +2521,7 @@ static void *vfio_iommu_type1_open(unsigned long arg)
INIT_LIST_HEAD(&iommu->iova_list);
iommu->dma_list = RB_ROOT;
iommu->dma_avail = dma_entry_limit;
+ iommu->container_open = true;
mutex_init(&iommu->lock);
BLOCKING_INIT_NOTIFIER_HEAD(&iommu->notifier);
@@ -3087,6 +3089,18 @@ vfio_iommu_type1_group_iommu_domain(void *iommu_data,
return domain;
}
+static void vfio_iommu_type1_notify(void *iommu_data,
+ enum vfio_iommu_notify_type event)
+{
+ struct vfio_iommu *iommu = iommu_data;
+
+ if (event != VFIO_IOMMU_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,
@@ -3101,6 +3115,7 @@ static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
.unregister_notifier = vfio_iommu_type1_unregister_notifier,
.dma_rw = vfio_iommu_type1_dma_rw,
.group_iommu_domain = vfio_iommu_type1_group_iommu_domain,
+ .notify = vfio_iommu_type1_notify,
};
static int __init vfio_iommu_type1_init(void)