[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240208091414.28133-1-yi.l.liu@intel.com>
Date: Thu, 8 Feb 2024 01:14:14 -0800
From: Yi Liu <yi.l.liu@...el.com>
To: joro@...tes.org,
jgg@...dia.com,
kevin.tian@...el.com,
baolu.lu@...ux.intel.com
Cc: alex.williamson@...hat.com,
robin.murphy@....com,
eric.auger@...hat.com,
nicolinc@...dia.com,
kvm@...r.kernel.org,
chao.p.peng@...ux.intel.com,
yi.l.liu@...el.com,
yi.y.sun@...ux.intel.com,
iommu@...ts.linux.dev,
linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
zhenzhong.duan@...el.com,
joao.m.martins@...cle.com
Subject: [PATCH] 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: 111bf85c68f6 ("iommu/vt-d: Add helper to setup pasid nested translation")
Signed-off-by: Yi Liu <yi.l.liu@...el.com>
---
base commit: 547ab8fc4cb04a1a6b34377dd8fad34cd2c8a8e3
---
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 3239cefa4c33..9be24bb762cf 100644
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -658,6 +658,8 @@ 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);
--
2.34.1
Powered by blists - more mailing lists