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Set the default value of ATS, RIL, SSIDSIZE, and OAS to auto, in order to match the host IOMMU properties when accel=on. If accel=off and these property values are set to auto, the default property values defined in smmuv3_init_id_regs() for OAS and RIL will remain unchanged, while SSIDSIZE and ATS values will remain initialized at 0. Introduce a new compat for the changed defaults. Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Nathan Chen <nathanc@nvidia.com> Tested-by: Eric Auger <eric.auger@redhat.com> Message-id: 20260608174900.2227340-9-nathanc@nvidia.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>