On 10/30/20 10:37 AM, Yi Sun wrote:
From: Liu Yi L <yi.l....@intel.com>Should get correct sid and set it into sdev. Because we execute 'sdev->sid != req->rid' in the loop of prq_event_thread(). Fixes: eb8d93ea3c1d ("iommu/vt-d: Report page request faults for guest SVA") Signed-off-by: Liu Yi L <yi.l....@intel.com> Signed-off-by: Yi Sun <yi.y....@linux.intel.com>
Cc: sta...@ver.kernel.org Acked-by: Lu Baolu <baolu...@linux.intel.com> Best regards, baolu
--- drivers/iommu/intel/svm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index f1861fa..7584669 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -279,6 +279,7 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev, struct intel_iommu *iommu = device_to_iommu(dev, NULL, NULL); struct intel_svm_dev *sdev = NULL; struct dmar_domain *dmar_domain; + struct device_domain_info *info; struct intel_svm *svm = NULL; int ret = 0;@@ -310,6 +311,10 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev,if (data->hpasid <= 0 || data->hpasid >= PASID_MAX) return -EINVAL;+ info = get_domain_info(dev);+ if (!info) + return -EINVAL; + dmar_domain = to_dmar_domain(domain);mutex_lock(&pasid_mutex);@@ -357,6 +362,7 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev, goto out; } sdev->dev = dev; + sdev->sid = PCI_DEVID(info->bus, info->devfn);/* Only count users if device has aux domains */if (iommu_dev_feature_enabled(dev, IOMMU_DEV_FEAT_AUX))
