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| author | Joerg Roedel <jroedel@suse.de> | 2015-07-30 11:24:45 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-07-31 15:15:41 +0200 |
| commit | 1c1cc454aa694a89572689515fdaaf27b8c9f42a (patch) | |
| tree | be9e39d560b43f03240b5271d49f00676d456b13 /drivers/iommu/amd_iommu.c | |
| parent | 52717828356b643a1650fca845b4af488a954cca (diff) | |
| download | linux-1c1cc454aa694a89572689515fdaaf27b8c9f42a.tar.gz linux-1c1cc454aa694a89572689515fdaaf27b8c9f42a.tar.bz2 linux-1c1cc454aa694a89572689515fdaaf27b8c9f42a.zip | |
iommu/amd: Allow non-ATS devices in IOMMUv2 domains
With the grouping of multi-function devices a non-ATS
capable device might also end up in the same domain as an
IOMMUv2 capable device.
So handle this situation gracefully and don't consider it a
bug anymore.
Tested-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index fa9508bb76dd..658ee39e6569 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3318,7 +3318,12 @@ static int __flush_pasid(struct protection_domain *domain, int pasid, struct amd_iommu *iommu; int qdep; - BUG_ON(!dev_data->ats.enabled); + /* + There might be non-IOMMUv2 capable devices in an IOMMUv2 + * domain. + */ + if (!dev_data->ats.enabled) + continue; qdep = dev_data->ats.qdep; iommu = amd_iommu_rlookup_table[dev_data->devid]; |