Re: [virtio-comment] Re: [PATCH 0/2] Selective queue enabling

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Jun 12, 2023 at 09:56:57AM +0200, Eugenio Perez Martin wrote:
> > > Another drawback of that is the long time a device can spend to
> > > reconfigure its memory maps.
> >
> > The map is already used for cvq though, I don't see why it would take
> > much more with this.
> >
> 
> In the case of vDPA HW, CVQ maps may not need to reach the device's or
> platform IOMMU, so the modification of that mapping is way cheaper.

Oh, I get it. It's setup time, but you are right.

> > > taking that into account, does it make
> > > sense to send a new version with the bit 1 on enable?
> > >
> > > Thanks!
> >
> > Current hardware won't support the extra bit though.

-- 
MST


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