Commit 88d7ab89 authored Feb 26, 2014 by Alex Williamson

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>

parent aa429318

drivers/vfio/vfio.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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
		*/

include/linux/vfio.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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 */