On 2021/8/17 12:24, Liu Yi L wrote:
This patch fixes the below error. This is due to improper iotlb invalidation in intel_pasid_tear_down_entry().[ 180.187556] Unexpected page request in Privilege Mode [ 180.187565] Unexpected page request in Privilege Mode [ 180.279933] Unexpected page request in Privilege Mode [ 180.279937] Unexpected page request in Privilege Mode Per chapter 6.5.3.3 of VT-d spec 3.3, when tear down a pasid entry, software should use Domain selective IOTLB flush if the PGTT of the pasid entry is SL only or Nested, while for the pasid entries whose PGTT is FL only or PT using PASID-based IOTLB flush is enough. Fixes: 1c4f88b7f1f9 ("iommu/vt-d: Shared virtual address in scalable mode") Cc: Lu Baolu<baolu...@linux.intel.com> Signed-off-by: Kumar Sanjay K<sanjay.k.ku...@intel.com> Signed-off-by: Liu Yi L<yi.l....@intel.com> Tested-by: Yi Sun<yi.y....@intel.com>
Good catch! Thanks! It has been queued for iommu/fix. Best regards, baolu _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
