Re: [PATCH v2 1/1] iommu/vt-d: Drain PRQs when domain removed from RID

From: Baolu Lu
Date: Fri Nov 01 2024 - 23:16:44 EST


On 2024/11/1 12:55, Lu Baolu wrote:
As this iommu driver now supports page faults for requests without
PASID, page requests should be drained when a domain is removed from
the RID2PASID entry.

This results in the intel_iommu_drain_pasid_prq() call being moved to
intel_pasid_tear_down_entry(). This indicates that when a translation
is removed from any PASID entry and the PRI has been enabled on the
device, page requests are drained in the domain detachment path.

The intel_iommu_drain_pasid_prq() helper has been modified to support
sending device TLB invalidation requests for both PASID and non-PASID
cases.

Signed-off-by: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx>
---
drivers/iommu/intel/iommu.c | 1 -
drivers/iommu/intel/pasid.c | 1 +
drivers/iommu/intel/prq.c | 26 +++++++++-----------------
3 files changed, 10 insertions(+), 18 deletions(-)

Queued for v6.13.

--
baolu