Re: [Xen-devel] [PATCH RESEND v9] VT-d: use correct BDF for VF to search VT-d unit

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

> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Friday, August 25, 2017 11:20 PM
> 
> 
> >  Currently, VF won't implement SRIOV feature, seeing
> > SRIOV specv1.1 chapter 3.7 PCI Express Extended Capabilities. Even VF
> > will implement SRIOV later, I think as long as a function is SRIOV
> > capable, we can initialize vf_rlen[] here.
> 
> How could a VF itself implement SR-IOV?
> 

PCI SRIOV doesn't support such capability, i.e. no nested hardware
i/o virtualization

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