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Subject: Re: [virtio-comment] Question regarding packed ring Virtio 1.1 feature
On Thu, Nov 21, 2019 at 08:40:29AM -0500, Yuri Benditovich wrote: > Hi, > > From the spec it looks like the device must maintain backward compatibility > with Virt 1.0 split queue implementation and use the packed one only when > negotiated. > What is the rational of such limitation, especially in case of true hardware > device? > > Thanks, > Yuri Benditovich I don't think that's intentional. Any device without a split queue implementation will fail negotiation if PACKED_RING has not been negotiated. It's more of a SHOULD since split ring support allows backwards compatibility with deployed software. -- MST
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