> -----Original Message-----
> From: Nathan Chen <[email protected]>
> Sent: 12 May 2026 20:35
> To: [email protected]; [email protected]
> Cc: Eric Auger <[email protected]>; Peter Maydell
> <[email protected]>; Philippe Mathieu-Daudé <[email protected]>;
> Zhao Liu <[email protected]>; Matt Ochs <[email protected]>; Nicolin
> Chen <[email protected]>; Shameer Kolothum Thodi
> <[email protected]>; Nathan Chen <[email protected]>
> Subject: [PATCH v3 5/7] hw/arm/smmuv3-accel: Implement "auto" value for
> "oas"
>
> From: Nathan Chen <[email protected]>
>
> Allow accelerated SMMUv3 OAS property to be derived from host IOMMU
> capabilities. Derive host values using IOMMU_GET_HW_INFO, retrieving
> OAS from IDR5.
>
> This keeps the OAS value advertised by the virtual SMMU compatible with
> the capabilities of the host SMMUv3, so that the intermediate physical
> addresses (IPA) consumed by host SMMU for stage-2 translation do not
> exceed the host's max supported IPA size.
>
> Reviewed-by: Eric Auger <[email protected]>
> Signed-off-by: Nathan Chen <[email protected]>
Reviewed-by: Shameer Kolothum <[email protected]>
Thanks,
Shameer
