Re: [Xen-devel] [v3][PATCH 10/16] tools: extend xc_assign_device() to support rdm reservation policy

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Chen, Tiejun
> Sent: Friday, June 12, 2015 4:25 PM
> 
> >> @@ -1792,6 +1794,8 @@ int xc_assign_dt_device(
> >>
> >>       domctl.u.assign_device.dev = XEN_DOMCTL_DEV_DT;
> >>       domctl.u.assign_device.u.dt.size = size;
> >> +    /* DT doesn't own any RDM. */
> >> +    domctl.u.assign_device.flag = XEN_DOMCTL_DEV_NO_RDM;
> >
> > still not clear about this NO_RDM flag. If a device-tree device doesn't
> > own RDM, the hypervisor will know it. Why do we require toolstack
> > to tell hypervisor not use it?
> 
> I think an explicit flag can make this sort of case identified, right?
> And other flags brings easily some confusions, or even a potential risk
> in the future.
> 

Thanks. That explanation is OK to me.

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