Commit 89863904 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Alex Williamson
Browse files

vfio/spapr_tce: reject mediated devices 



Unlike the the type1 IOMMU backend, the SPAPR one does not contain any
support for the magic non-IOMMU backed iommu_group used by mediated
devices, so reject them in ->attach_group.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20210924155705.4258-13-hch@lst.de


Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent c3c0fa9d

drivers/vfio/vfio_iommu_spapr_tce.c

+3 −0
Original line number Diff line number Diff line
@@ -1246,6 +1246,9 @@ static int tce_iommu_attach_group(void *iommu_data, 
	struct iommu_table_group *table_group;

	struct tce_iommu_group *tcegrp = NULL;



	if (type == VFIO_EMULATED_IOMMU)

		return -EINVAL;



	mutex_lock(&container->lock);



	/* pr_debug("tce_vfio: Attaching group #%u to iommu %p\n",