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VFIO fixes for v4.10-rc6

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- mdev IOMMU groups are not yet compatible with the powerpc SPAPR
    IOMMU backend, detect and fail group attach (Greg Kurz)
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Merge tag 'vfio-v4.10-rc6' of git://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:
 "mdev IOMMU groups are not yet compatible with the powerpc SPAPR IOMMU
  backend, detect and fail group attach (Greg Kurz)"

* tag 'vfio-v4.10-rc6' of git://github.com/awilliam/linux-vfio:
  vfio/spapr: fail tce_iommu_attach_group() when iommu_data is null
This commit is contained in:
Linus Torvalds 2017-01-27 12:10:58 -08:00
commit 3aebae061c
1 changed files with 4 additions and 0 deletions
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4
drivers/vfio/vfio_iommu_spapr_tce.c
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@ -1270,6 +1270,10 @@ static int tce_iommu_attach_group(void *iommu_data,
/* pr_debug("tce_vfio: Attaching group #%u to iommu %p\n",
iommu_group_id(iommu_group), iommu_group); */
table_group = iommu_group_get_iommudata(iommu_group);
if (!table_group) {
ret = -ENODEV;
goto unlock_exit;
}
if (tce_groups_attached(container) && (!table_group->ops ||
!table_group->ops->take_ownership ||