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Subject: RE: [PATCH v4 08/17] iommufd: Always setup MSI and anforce cc on
 kernel-managed domains
Thread-Topic: [PATCH v4 08/17] iommufd: Always setup MSI and anforce cc on
 kernel-managed domains
Thread-Index: AQHZ7GCNzWxyrCHnVkqPkBvqOzEqrbAsylxg
Date:   Tue, 26 Sep 2023 08:16:35 +0000
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> From: Liu, Yi L <yi.l.liu@intel.com>
> Sent: Thursday, September 21, 2023 3:51 PM
>=20
> From: Nicolin Chen <nicolinc@nvidia.com>
>=20
> Now enforce_cache_coherency and msi_cookie are kernel-managed hwpt
> things.
> So, they should be only setup on kernel-managed domains. If the attaching
> domain is a user-managed domain, redirect the hwpt to hwpt->parent to do
> it correctly.
>=20

No redirection. The parent should already have the configuration done
when it's created. It shouldn't be triggered in the nesting path.