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| author | Steve Sistare <steven.sistare@oracle.com> | 2021-01-29 08:54:11 -0800 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-02-01 13:20:07 -0700 |
| commit | 487ace1340536ea9b8daf8c783a397a467fe55fc (patch) | |
| tree | fa0a7c8e295c34bc2a24f9d81b20d1cb36a0d396 /drivers/vfio/vfio_iommu_type1.c | |
| parent | ec5e32940cc9d2a8a321cb7d756fb6ae45702d03 (diff) | |
| download | linux-487ace1340536ea9b8daf8c783a397a467fe55fc.tar.bz2 | |
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/vfio_iommu_type1.c')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 15 |
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) |