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| author |   Alex Williamson <alex.williamson@redhat.com> | 2014-02-26 11:38:39 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2014-02-26 11:38:39 -0700 |
| commit | 88d7ab8949427f492c39f6daf0ac67f0242a88bc (patch) | |
| tree | cfa7d27b7a59ff6ffe666374a19e08b2e5f1ee64 | |
| parent | vfio/type1: Add extension to test DMA cache coherence of IOMMU (diff) | |
| download | linux-dev-88d7ab8949427f492c39f6daf0ac67f0242a88bc.tar.xz linux-dev-88d7ab8949427f492c39f6daf0ac67f0242a88bc.zip | |
vfio: Add external user check extension interface
This lets us check extensions, particularly VFIO_DMA_CC_IOMMU using
the external user interface, allowing KVM to probe IOMMU coherency.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| -rw-r--r-- | drivers/vfio/vfio.c | 6 | ||||
| -rw-r--r-- | include/linux/vfio.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 21271d8df023..512f479d8a50 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1413,6 +1413,12 @@ int vfio_external_user_iommu_id(struct vfio_group *group) } EXPORT_SYMBOL_GPL(vfio_external_user_iommu_id); +long vfio_external_check_extension(struct vfio_group *group, unsigned long arg) +{ + return vfio_ioctl_check_extension(group->container, arg); +} +EXPORT_SYMBOL_GPL(vfio_external_check_extension); + /** * Module/class support */ diff --git a/include/linux/vfio.h b/include/linux/vfio.h index 24579a0312a0..81022a52bc34 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -96,5 +96,7 @@ extern void vfio_unregister_iommu_driver( extern struct vfio_group *vfio_group_get_external_user(struct file *filep); extern void vfio_group_put_external_user(struct vfio_group *group); extern int vfio_external_user_iommu_id(struct vfio_group *group); +extern long vfio_external_check_extension(struct vfio_group *group, + unsigned long arg); #endif /* VFIO_H */ |