Thread (12 messages) 12 messages, 2 authors, 2023-09-01

Re: [PATCH v7 6/9] iommu/arm-smmu-v3: Move CD table to arm_smmu_master

From: Nicolin Chen <hidden>
Date: 2023-08-31 22:33:05
Also in: linux-iommu, lkml

On Fri, Sep 01, 2023 at 01:44:35AM +0800, Michael Shavit wrote:
With this change, each master will now own its own CD table instead of
sharing one with other masters attached to the same domain. Attaching a
stage 1 domain installs CD entries into the master's CD table. SVA
writes its CD entries into each master's CD table if the domain is
shared across masters.

Also add the device to the devices list before writing the CD to the
table so that SVA will know that the CD needs to be re-written to this
device's CD table as well if it decides to update the CD's ASID
concurrently with this function.

Tested-by: Nicolin Chen <redacted>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Michael Shavit <redacted>
 
Reviewed-by: Nicolin Chen <redacted>

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