Re: [Xen-devel] Xen 4.6 Development Update (five months reminder, 5 WEEKS TO FREEZE)

["Wu, Feng" <feng.wu@xxxxxxxxx>]

> -----Original Message-----
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> Sent: Friday, June 05, 2015 9:54 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxxx; White, Edmund H;
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> Subject: Xen 4.6 Development Update (five months reminder, 5 WEEKS TO
> FREEZE)
> 
> (Note, please trim your quotes when replying, and also trim the CC list if
> necessary. You might also consider changing the subject line of your reply to
> "Status of  (Was: Xen 4.6 Development Update (X months reminder)")
> 
> Hi all
> 
> We are now four months into 4.6 development window. This is an email to keep
> track of all the patch series I gathered. It is by no means complete and / or
> acurate. Feel free to reply this email with new projects or correct my
> misunderstanding.
> 
> = Timeline =
> 
> We are planning on a 9-month release cycle, but we could also release a bit
> earlier if everything goes well (no blocker, no critical bug).
> 
> * Development start: 6 Jan 2015
> <=== We are here ===>
> * Feature Freeze: 10 Jul 2015
> * RCs: TBD
> * Release Date: 9 Oct 2015 (could release earlier)
> 
> The RCs and release will of course depend on stability and bugs, and
> will therefore be fairly unpredictable.
> 
> Bug-fixes, if Acked-by by maintainer, can go anytime before the First
> RC. Later on we will need to figure out the risk of regression/reward
> to eliminate the possiblity of a bug introducing another bug.
> 
> = Prognosis =
> 
> The states are: none -> fair -> ok -> good -> done
> 
> none - nothing yet
> fair - still working on it, patches are prototypes or RFC
> ok   - patches posted, acting on review
> good - some last minute pieces
> done - all done, might have bugs
> 
> = Bug Fixes =
> 
> Bug fixes can be checked in without a freeze exception throughout the
> freeze, unless the maintainer thinks they are particularly high
> risk.  In later RC's, we may even begin rejecting bug fixes if the
> broken functionality is small and the risk to other functionality is
> high.
> 
> Document changes can go in anytime if the maintainer is OK with it.
> 
> These are guidelines and principles to give you an idea where we're coming
> from; if you think there's a good reason why making an exception for you will
> help us make Xen better than not doing so, feel free to make your case.
> 
> == Hypervisor ==
> 
> *  Alternate p2m: support multiple copies of host p2m (ok)
>   -  Ed White
> 
> *  Improve RTDS scheduler (none)
>    Change RTDS from quantum driven to event driven
>   -  Dagaen Golomb, Meng Xu, Chong Li
> 
> *  Credit2: introduce per-vcpu soft affinity (good)
>   -  Justin T. Weaver
> 
> *  Credit2: introduce per-vcpu hard affinity (fair)
>   -  Justin T. Weaver
> 
> *  sndif: add API for para-virtual sound (fair)
>    v7 posted
>   -  Oleksandr Dmytryshyn
> 
> *  gnttab: improve scalability (good)
>   -  David Vrabel
> 
> *  Xen multiboot2-EFI support (ok)
>    See http://lists.xen.org/archives/html/xen-devel/2015-01/msg03962.html
>     http://lists.xen.org/archives/html/xen-devel/2015-01/msg03982.html
>   -  Daniel Kiper
> 
> *  Credit2 production ready (none)
>    cpu reservation
>   -  George Dunlap
> 
> *  VM event patches (none)
>    Add support for XSETBV vm_events,
>    Support hybernating guests
>    Support for VMCALL-based vm_events
>   -  Razvan Cojocaru
> 
> === Hypervisor X86 ===
> 
> *  Intel Cache Allocation Technology (good)
>   -  Chao Peng
> 
> *  Intel GVT-g (none)
>    requires refactoring ioreq-server, fixing 16-byte MMIO emulation
>    and optional PV IOMMU support
>   -  Yu, Zhang
> 
> *  Porting Intel P-state driver to Xen (fair)
>   -  Wang, Wei
> 
> *  VT-d Posted-interrupt (PI) (good)
>    v2 posted
>   -  Wu, Feng

This one is pending on review for some time, any comments are welcome!

Thanks,
Feng

> 
> *  Support controlling the max C-state sub-state (fair)
>    v3 posted
>    Hadn't see the patch reposted.
>   -  Ross Lagerwall
> 
> *  IOMMU ABI for guests to map their DMA regions (fair)
>   -  Malcolm Crossley
> 
> *  RMRR fix (fair)
>    RFC posted
>   -  Tiejun Chen
> 
> *  VPMU - 'perf' support in Xen (good)
>    v21 posted
>    Need reviews/final ack.
>   -  Boris Ostrovsky
> 
> *  PVH domU (fair)
>    RFC posted
>   -  Elena Ufimtseva
> 
> === Hypervisor ARM ===
> 
> *  ITS support (fair )
>   -  Vijaya Kumar K
> 
> *  Add ACPI support for arm64 on Xen (fair)
>    RFC posted
>   -  Parth Dixit
> 
> *  ARM remote processor iommu module (GPUs + IPUs) (fair)
>    v3 posted
>   -  Andrii Tseglytskyi
> 
> *  ARM VM save/restore/live migration (none)
>    Need to rebased against migrationv2 - no code posted.
>   -  None
> 
> *  ARM GICv2m support (none)
>   -  Suravee Suthikulanit
> 
> *  ARM  PCI passthrough (fair)
>   -  Manish Jaggi
> 
> *  ARM GICv2 on GICv3 support (none)
>   -  Julien Grall
>   -  Vijay Kilari
> 
> == Xen toolstack ==
> 
> *  Split libxc into multiple libraries (none)
>   -  Ian Campbell
> 
> *  Remus using migration-v2 (good)
>    RFC posted - depends on v6 of 'New Migration'
>   -  Yang Hongyang
> 
> *  Migration v2 (libxl) (none)
>   -  Andrew Cooper
> 
> *  toolstack-based approach to pvhvm guest kexec (fair)
>    also contains hypervisor side change, v6
>   -  Vitaly Kuznetsov
> 
> *  libxl: cancelling asynchronous operations (fair)
>    RFC posted
>   -  Ian Jackson
> 
> *  VMware tools support (ok)
>   -  Don Slutz
> 
> *  PV USB support in libxl (fair)
>   -  Chunyan Liu
> 
> *  HVM USB support in libxl (fair)
>    depend on PV USB support
>   -  George Dunlap
> 
> *  Blktap2 support (fair)
>   -  George Dunlap
> 
> *  pvscsi in libxl (fair)
>   -  Juergen Gross and Olaf
> 
> *  COarse-grain LOck-stepping Virtual Machines in Xen (fair)
>    RFC v5 posted
>   -  Wen Congyang
>   -  Gui Jianfeng
>   -  Yang Hongyang
>   -  Dong, Eddie
> 
> *  tmem migrationv2 patches. (none)
>   -  Bob Liu & Andrew Cooper & David Vrabel
> 
> *  snapshot API extension (checkpointing disk) (fair)
>    v10
>   -  Chunyan Liu
> 
> *  PVH - Migration of PVH DomUs. (none)
>    Depends on migration2 code
>    v1 posted
>   -  Roger Pau Monné
> 
> *  PVH - Migration of guests from a PVH dom0  (fair)
>    Depends on migration2 code
>   -  Roger Pau Monné
> 
> == QEMU ==
> 
> *  Restrict QEMU
>   -  Stefano Stabellini
> 
> *  Linux-based QEMU upstream stub domain (fair)
>    RFC posted
>   -  Eric Shelton
> 
> *  Using qemu-upstream in a stubdomain (none)
>    Will use rump kernels.
>   -  Wei Liu
> 
> *  Intel IGD PCI GPU passthrough (ok)
>    v5 posted
>   -  Chen, Tiejun
> 
> == Linux ==
> 
> *  VPMU - 'perf' support in Linux (ok)
>    Depends on Xen patches
>    Acked by David Vrabel
>   -  Boris Ostrovsky
> 
> *  vNUMA in Linux (ok)
>    v6 posted
>   -  Wei Liu
> 
> *  COLO Agent in Linux (fair)
>   -  Gui Jianfeng
>   -  Yang Hongyang
>   -  Dong, Eddie
> 
> *  ARM64 - support 64K guest (none)
>   -  Julien Grall
> 
> == OpenStack ==
> 
> == FreeBSD ==
> 
> *  PVH FreeBSD dom0 (ok)
>    FreeBSD 11 goal. Toolstack side done in Xen 4.5
>   -  Roger Pau Monné
> 
> == Other OSes (MiniOS, QNX) ==
> 
> *  ARM - MiniOS (fair)
>    v7 posted
>   -  Thomas Leonard
> 
> *  PV drivers for automotive kernels (fair)
>   -  Artem Mygaiev
> 
> == OSSTEST ==
> 
> *  OSSTest: stubdom test case (fair)
>   -  Wei Liu
> 
> *  OSSTest: libvirt migration (fair)
>   -  Wei Liu
> 
> *  OSSTest: upgrade to Debian Jessie (none)
>   -  Wei Liu
> 
> *  OSSTest: performance test (fair)
>   -  Dario Faggioli
> 
> *  CPU pool test case (fair)
>   -  Dario Faggioli
> 
> *  Add a FreeBSD host (fair)
>   -  Roger Pau Monné
> 
> *  Nested virt test case
> 
> *  v8 posted (fair)
>   -  Robert Hu
> 
> == Deferred ==
> 
> *  HT enabled with credit has 7.9 per perf drop. (none)
>    kernbench demonstrated it
>    http://www.gossamer-threads.com/lists/xen/devel/339409
>    This has existed since credit1 introduction.
>   -  Dario Faggioli
> 
> *  ucode=scan also scan compressed initramfs (none)
>   -  Konrad Rzeszutek Wilk
> 
> *  adjust log buffer based on memmap size (none)
>   -  Konrad Rzeszutek Wilk
> 
> *  Further tmem cleanups/fixes (fair)
>   -  Bob Liu
> 
> *  1TB slow destruction (ok)
>   -  Bob Liu
> 
> *  cpuid leveling (none)
> 
> http://xenbits.xen.org/people/andrewcoop/feature-levelling/feature-levelling-
> D.pdf
>   -  Andrew Cooper
> 
> *  IO-NUMA - hwloc and xl (none)
>    Andrew Cooper had an RFC patch for hwloc
>    add restrictions  as to which devices cannot safely/functionally be split
> apart.
>   -  Boris Ostrovsky
> 
> *  Convert tasklet to per-cpu tasklets (fair)
>    RFC posted
>   -  Konrad Rzeszutek Wilk
> 
> *  Xen Boot Information (xbi) (ok)
>    Dependency for GRUB2 + EFI work
>    http://lists.xen.org/archives/html/xen-devel/2014-10/msg02068.html
>    v4, No go for full patchset. Only some of the patches.
>    No ARM EFI hardware (yet) available to test them.
>   -  Daniel Kiper
> 
> *  Linux ARM - Device assigment usage in Linux code (arch/arm) non-PCI (none)
>    Depends on Xen pieces which are on the Xen 4.6 list.
>   -  Julien Grall
> 
> == Completed ==
> 
> *  setup CI loop for OpenStack (fair)
>   -  Anthony Perard
> 
> *  Display IO topology when PXM data is available (good)
>    v7 posted
>   -  Boris Ostrovsky
> 
> *  ARM: reenable support 32-bit userspace running in 64-bit guest (good)
>    v2 posted
>   -  Ian Campbell
> 
> *  Mem_access for ARM (good)
>    v15 posted
>   -  Tamas K Lengyel
> 
> *  Clean-up of mem-event subsystem (good)
>    v9 posted
>   -  Tamas K Lengyel
> 
> *  New Migration (v2). (good)
>    v9 (libxc)
>    git://xenbits.xen.org/people/andrewcoop/xen.git
>    Seems that it might need to slip or we run v1 alongside v2.
>   -  Andrew Cooper & David Vrabel
> 
> *  libxl: add qxl vga interface support for upstream qemu (fair)
>   -  Fabio Fantoni
> 
> *  ARM - passthrough of non-PCI (ok)
>   -  Julien Grall
> 
> *  Intel PML (Page Modification Logging) for Xen (good)
>    v1 posted
>   -  Kai Huang
> 
> *  Regression in PCI passthrough of INTx legacy devices can trigger list
> corruption (good)
>    Sander reported it. Two different types of patches available.
>   -  Konrad Rzeszutek Wilk
> 
> *  HVM guest NUMA (SRAT) (good)
>    See vNUMA in Xen toolstack
>   -  Wei Liu
> 
> *  vNUMA in Xen toolstack (good)
>    v8 posted
>   -  Wei Liu
> 
> *  Intel memory bandwidth monitoring for VMs (fair)
>    v9 posted
>   -  Chao Peng
> 
> *  ARM - SMMU resync of Linux's one (ok)
>   -  Julien Grall
> 
> *  Add support for Xilinx ZynqMP SoC (fair)
>   -  Edgar E. Iglesias
> 
> *  Add support for Huawei hip04-d01 platform (ok)
>   -  Frediano Ziglio
> 
> *  Thunder X platform support (ok)
>   -  Vijay Kilari
> 
> *  Splitting off mini-os (done)
>   -  Wei Liu
> 
> *  OVMF on ARM (done)
>    v4 posted
>   -  Ard Biesheuvel
> 
> *  Update Xen tree to use upstream OVMF (done)
>   -  Anthony PERARD
> 
> *  Enable vTPM subsystem on TPM 2.0 (done)
>   -  Xu, Quan
> 
> *  SPICE support improvement (done)
>   -  Fabio Fantoni
> 
> *  arm: introduce basic Renesas R-Car Gen2 platform support (done)
>    v5 posted
>   -  Oleksandr Tyshchenko


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