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Re: [Xen-devel] 4.2 TODO List

On Tue, 2012-02-28 at 15:08 +0000, Mathieu Gagnà wrote:
> Hi,
> On 2/28/12 7:50 AM, Ian Campbell wrote:
> > tools, blockers:
> >
> >        * libxl stable API -- we would like 4.2 to define a stable API
> >          which downstream's can start to rely on not changing. Aspects of
> >          this are:
> >                * More formally deprecate xm/xend. Manpage patches already
> >                  in tree. Needs release noting and communication around
> >                  -rc1 to remind people to test xl.
> Will there be support for rate limiting for vif as there is in xm/xend?
> The help for the command "network-attach" shows support for "rate". 
> Unfortunately, an error occurs when using the "rate" parameter:
> "the rate parameter for vifs is currently not supported"

I think this ought to be fixed before 4.2.

It should be a fairly simple matter to plumb the parameter through to
the underlying xenstore key. If you feel up to creating a patch I'd be
happy to give some guidance.

> The same applies for the "accel" parameter which I don't know the 
> purpose and don't use.

This enables (or would, if it were implemented) the use of the old h/w
acceleration interface for netchannel. I'm not sure if anyone is still
using or supporting this either. I don't think there is any support in
the upstream kernels for this stuff either. I'm inclined to omit it for
4.2 unless someone is keen to do the necessary work.


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