6.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yi Liu <yi.l.liu@xxxxxxxxx>
[ Upstream commit 1f0198fce68340e0da2d438f4ea9fc20d2c958da ]
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: 111bf85c68f6 ("iommu/vt-d: Add helper to setup pasid nested translation")
Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>
Reviewed-by: Joao Martins <joao.m.martins@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240208091414.28133-1-yi.l.liu@xxxxxxxxx
Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iommu/intel/pasid.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c
index 9f8f389ff255c..6e102cbbde845 100644
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -925,6 +925,8 @@ 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);
--
2.43.0
