Re: [Xen-devel] Xen 4.7 Development Update

[George Dunlap <dunlapg@xxxxxxxxx>]

On Mon, Feb 29, 2016 at 11:17 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> NOTE: We are one month away from freeze. Features that wish to be in 4.7 must
> be posted to xen-devel by March 18.
>
> This email only tracks big items for xen.git tree. Please reply for items you
> woulk like to see in 4.7 so that people have an idea what is going on and
> prioritise accordingly.
>
> You're welcome to provide description and use cases of the feature you're
> working on.
>
> = Timeline =
>
> We now adopt a fixed cut-off date scheme. We will release twice a
> year. The upcoming 4.7 timeline are as followed:
>
> * Last posting date: March 18, 2016
> * Hard code freeze: April 1, 2016
> * RC1: TBD
> * Release: June 3, 2016
>
> Note that we don't have freeze exception scheme anymore. All patches
> that wish to go into 4.7 must be posted no later than the last posting
> date. All patches posted after that date will be automatically queued
> into next release.
>
> RCs will be arranged immediately after freeze.
>
> = Projects =
>
> == Hypervisor ==
>
> *  Convert RTDS from time to event-driven model
>   -  Meng Xu
>   -  Tianyang Chen
>
> === x86 ===
>
> *  Improve ioreq server performance
>   -  Yu Zhang
>   -  Paul Durrant

If this means "use RB trees for rangesets", I think this is already in.

If this means, "allow ioreq servers to track enough distinct pages to
make XenGT useable", this is somewhat iffy.

> *  Posted interrupt
>   -  Wu, Feng

I think this has been all acked -- should go in soon I think.

> *  Memory protection-key support
>   -  Huaitong Han

This has been checked in.

> *  PV USB passthrough
>   -  Chunyan Liu

This is looking pretty good -- hopefully ready to go in this week or next.

> *  HVM USB passthrough
>   -  George Dunlap

This is iffy, but I"ll give it a go. :-)

> *  Fix hotplug script machinery and remove blktap
>   -  George Dunlap

I've sent some patches that get partially there -- there's someone
Roger knows on the FreeBSD list who can hopefully pick them up.

But fully getting rid of blktap without regressions will have to wait
until we have local-attach for qemu, which I doubt will happen before
4.7.

 -George

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