Re: [RFC PATCH v4 5/8] xen/domctl: extend XEN_DOMCTL_assign_device to handle not only iommu

[Jan Beulich <jbeulich@xxxxxxxx>]

On 22.05.2025 02:25, Stefano Stabellini wrote:
> On Mon, 19 May 2025, Oleksii Moisieiev wrote:
>> +        ret = dt_find_node_by_gpath(domctl->u.assign_device.u.dt.path,
>> +                                    domctl->u.assign_device.u.dt.size, 
>> &dev);
>> +        if ( ret )
>> +            return ret;
>> +
>> +        ret = sci_assign_dt_device(d, dev);
>> +        if ( ret )
>> +            break;
>> +
>> +        break;
>> +    default:
>> +        /* do not fail here as call is chained with iommu handling */
> 
> It looks like this should be an error

The way the hooking is done at the call site, I think it can't be an error
here. But I previously questioned the way that hooking is done.

Jan