diff options
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 24d31090b140..6ac6e741c46e 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3241,7 +3241,10 @@ static struct iova *intel_alloc_iova(struct device *dev, static struct dmar_domain *__get_valid_domain_for_dev(struct device *dev) { + struct dmar_rmrr_unit *rmrr; struct dmar_domain *domain; + struct device *i_dev; + int i, ret; domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH); if (!domain) { @@ -3250,6 +3253,23 @@ static struct dmar_domain *__get_valid_domain_for_dev(struct device *dev) return NULL; } + /* We have a new domain - setup possible RMRRs for the device */ + rcu_read_lock(); + for_each_rmrr_units(rmrr) { + for_each_active_dev_scope(rmrr->devices, rmrr->devices_cnt, + i, i_dev) { + if (i_dev != dev) + continue; + + ret = domain_prepare_identity_map(dev, domain, + rmrr->base_address, + rmrr->end_address); + if (ret) + dev_err(dev, "Mapping reserved region failed\n"); + } + } + rcu_read_unlock(); + return domain; } |