diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-09-24 17:57:02 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-09-30 12:46:44 -0600 |
| commit | 898639041484003e219e35fd1623b4bb1f4c0d04 (patch) | |
| tree | 157443d977f5f9141a6f3404f353d46546bd04b6 /drivers/vfio | |
| parent | c3c0fa9d94f7078b6664d29d79484d071a144f2e (diff) | |
| download | linux-898639041484003e219e35fd1623b4bb1f4c0d04.tar.bz2 | |
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: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20210924155705.4258-13-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio_iommu_spapr_tce.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index 936a26b13c0b..708a95e61831 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -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", |