Re: [PATCH v4 2/9] xen/arm, doc: Add a DT property to specify IOMMU for Dom0less domUs

[Julien Grall <julien@xxxxxxx>]

Hi Henry,

On 23/05/2024 08:40, Henry Wang wrote:
> There are some use cases in which the dom0less domUs need to have
> the XEN_DOMCTL_CDF_iommu set at the domain construction time. For
> example, the dynamic dtbo feature allows the domain to be assigned
> a device that is behind the IOMMU at runtime. For these use cases,
> we need to have a way to specify the domain will need the IOMMU
> mapping at domain construction time.
>
> Introduce a "passthrough" DT property for Dom0less DomUs following
> the same entry as the xl.cfg. Currently only provide two options,
> i.e. "enable" and "disable". Set the XEN_DOMCTL_CDF_iommu at domain
> construction time based on the property.
>
> Signed-off-by: Henry Wang <xin.wang2@xxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall