diff mbox series

[RFC,01/12] iommu/vt-d: Retire the treatment for revoking PASIDs with pending pgfaults

Message ID 20231017032045.114868-2-tina.zhang@intel.com
State New
Headers
Series iommu/vt-d: Remove superfluous IOMMU IOTLB invalidations |

Commit Message

Zhang, Tina Oct. 17, 2023, 3:20 a.m. UTC 
  Revoking PASIDs with pending page faults has been achieved by clearing the
pasid entry and draining the pending page faults in both hardware and
software. The temporary treatment can be retired now.

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
---
 drivers/iommu/intel/svm.c | 7 -------
 1 file changed, 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index 3c531af58658..9bf79cf88aec 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -387,13 +387,6 @@  void intel_svm_remove_dev_pasid(struct device *dev, u32 pasid)
 			if (svm->notifier.ops)
 				mmu_notifier_unregister(&svm->notifier, mm);
 			pasid_private_remove(svm->pasid);
-			/*
-			 * We mandate that no page faults may be outstanding
-			 * for the PASID when intel_svm_unbind_mm() is called.
-			 * If that is not obeyed, subtle errors will happen.
-			 * Let's make them less subtle...
-			 */
-			memset(svm, 0x6b, sizeof(*svm));
 			kfree(svm);
 		}
 	}