RE: [PATCH v1 1/2] vfio/pci: Expose PCIe PASID capability to guest

Liu, Yi L
2020-03-31T06:42:28Z

> From: Tian, Kevin <kevin.tian@intel.com>
> Sent: Tuesday, March 31, 2020 2:39 PM
> To: Liu, Yi L <yi.l.liu@intel.com>; alex.williamson@redhat.com;
> Subject: RE: [PATCH v1 1/2] vfio/pci: Expose PCIe PASID capability to guest
>
> > From: Liu, Yi L <yi.l.liu@intel.com>
> > Sent: Sunday, March 22, 2020 8:33 PM
> >
> > From: Liu Yi L <yi.l.liu@intel.com>
> >
> > This patch exposes PCIe PASID capability to guest. Existing vfio_pci
> > driver hides it from guest by setting the capability length as 0 in
> > pci_ext_cap_length[].
> >
> > This capability is required for vSVA enabling on pass-through PCIe
> > devices.
>
> should this be [PATCH 2/2], after you have the emulation in place?

oh, yes, I can re-sequence it.

> and it might be worthy of noting that PRI is already exposed, to
> avoid confusion from one like me that why two capabilities are
> emulated in this series while only one is being exposed. 😊

got it. it would be helpful. thanks.

Regards,
Yi Liu