Xen 4.9 Development Update

[Julien Grall <julien.grall@arm.com>]

This email only tracks big items for xen.git tree. Please reply for items you
woulk like to see in 4.9 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 4.9 timeline are as followed:

* Last posting date: March 17th, 2017
* Hard code freeze: March 31th, 2017
* RC1: TBD
* Release: June 2, 2017

Note that we don't have freeze exception scheme anymore. All patches
that wish to go into 4.9 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 == 

*  Boot Xen on EFI platforms using GRUB2 (multiboot2 protocol)
  -  Daniel Kiper

*  Per-cpu tasklet
  -  Konrad Rzeszutek Wilk

=== x86 === 

*  Allow ioreq server interface to support XenGT
  -  Yu Zhang
  -  Paul Durrant

*  PVHv2 support
  -  Roger Pau Monne

*  vNVDIMM support
  -  Haozhong Zhang

*  Completion of the x86 insn emulator (as far as possible)
  -  Jan Beulich

*  Getting guest CPUID handling into a better shape
  -  Andrew Cooper

*  Enable L2 Cache Allocation Technology
  -  Yi Sun

*  Enable Memory Bandwidth Allocation
  -  Yi Sun

=== ARM === 

*  ITS emulation (Dom0 only)
  -  Andre Przywara

*  Altp2m for ARM
  -  Sergej Proskurin

*  Support Tegra SoCs
  -  Kyle Temkin

== Toolstack == 

*  Libxl PVSCSI support
  -  Olaf Hering

*  Libxl depriv QEMU
  -  Ian Jackson

*  Remove blktap2
  -  Wei Liu

== Mini-OS == 

== PV Drivers == 

*  Xen transport for 9pfs
  -  Stefano Stabellini

*  PV calls
  -  Stefano Stabellini

== GRUB == 

*  Support booting Xen ARM
  -  Fu Wei

== Testing == 

*  Continuous fuzzing of Xen code using Google oss-fuzz
  -  Wei Liu

== Blocker == 

*  Fix issues with zero-length records in migration v2
  Link: https://bugs.xenproject.org/xen/bug/56
  -  Andrew Cooper

== Completed == 

*  Rework gcov support in hypervisor
  -  Wei Liu

*  XenStore XS_DIRECTORY_PART extension
  -  Juergen Gross


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