Re: [PATCH] virtio-pci: implement VIRTIO_F_RING_STATE

[Jason Wang <jasowang@redhat.com>]

在 2021/7/9 下午7:06, Cornelia Huck 写道:
> On Wed, Jul 07 2021, Jason Wang <jasowang@redhat.com> wrote:
>
> > This patch is a follow up for the virtqueue state synchronization
> > series to implement VIRTIO_F_RING_STATE via a dedicated capability for
> > PCI transport.
> >
> > With the help of the STOP status bit, the virtqueue state
> > synchronization for PCI should be self contained.
> >
> > Signed-off-by: Jason Wang <jasowang@redhat.com>
> > ---
> >   content.tex | 32 ++++++++++++++++++++++++++++++++
> >   1 file changed, 32 insertions(+)
> (...)
>
> > +\devicenormative{\paragraph}{General Virtqueue State}{Virtio Transport Options / Virtio Over PCI Bus / PCI Device Layout / General Virtqueue State}
> > +
> > +The device MUST present at least one VIRTIO_PCI_CAP_RING_STATE
> > capability if VITIO_F_RING_STATE is negotiated.
> s/VITIO/VIRTIO/


Will fix.


> Are multiple capabilities inteded to enable parallel access to multiple
> virtqueues?


I'm not sure, it just not forbid the device to have multiple of such 
capabilies. We've already had normative like this for common 
configuration structure:

"The device MUST present at least one common configuration capability."

Thanks


> > +
> >   \subsubsection{Legacy Interfaces: A Note on PCI Device Layout}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI Device Layout / Legacy Interfaces: A Note on PCI Device Layout}
> >   
> >   Transitional devices MUST present part of configuration