iommu/vt-d: Set SSADE when attaching to a parent with dirty tracking

Should set the SSADE (Second Stage Access/Dirty bit Enable) bit of the pasid entry when attaching a device to a nested domain if its parent has already enabled dirty tracking. Fixes: 111bf85 ("iommu/vt-d: Add helper to setup pasid nested translation") Signed-off-by: Yi Liu <[email protected]> Reviewed-by: Joao Martins <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Lu Baolu <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
sedwards · Feb 21, 2024 · 1f0198f · 1f0198f
1 parent f1e1610
commit 1f0198f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
@@ -657,6 +657,8 @@ int intel_pasid_setup_nested(struct intel_iommu *iommu, struct device *dev,
 	pasid_set_domain_id(pte, did);
 	pasid_set_address_width(pte, s2_domain->agaw);
 	pasid_set_page_snoop(pte, !!ecap_smpwc(iommu->ecap));
+	if (s2_domain->dirty_tracking)
+		pasid_set_ssade(pte);
 	pasid_set_translation_type(pte, PASID_ENTRY_PGTT_NESTED);
 	pasid_set_present(pte);
 	spin_unlock(&iommu->lock);