diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a27d3eb14e87..afbc8d6f6f85 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1297,6 +1297,13 @@ static void free_dmar_iommu(struct intel_iommu *iommu) if ((iommu->domains) && (iommu->domain_ids)) { for_each_set_bit(i, iommu->domain_ids, cap_ndoms(iommu->cap)) { + /* + * Domain id 0 is reserved for invalid translation + * if hardware supports caching mode. + */ + if (cap_caching_mode(iommu->cap) && i == 0) + continue; + domain = iommu->domains[i]; clear_bit(i, iommu->domain_ids); |