Re: Xen 4.5 development update

[Wei Huang <w1.huang@samsung.com>]

Hi Konrad,

I would expect the following item to be added for Xen 4.5. The patch set 
has been reviewed for several rounds and shouldn't have any major 
technical challenge.

* Wei Huang Prognosis:   90 %
       ARM VM save/restore/live migration

Also, I don't see many ARM features, other than IOMMU and memory_map 
hypercall, in your list. There should be more. Maybe Stefano/IanC/Julien 
can gather a list for ARM?

Thanks,
-Wei

On 05/27/2014 01:06 PM, konrad.wilk@oracle.com wrote:
> Below is a summary of the projects / features being worked on for the 4.5
> time frame that I had been gathering.
>
> It is not complete! I would like folks input if I had missed something
> or screwed up. Will also talk at Xen Hackahon about this and take a look
> at  http://wiki.xen.org/wiki/Xen_Roadmap/4.4 to see which of the
> items there should move over.
>
> The tentative feature freeze is scheduled for September 10th,
> which is months away.  With that in mind, I think it's time to take
> stock of the development, so we know whether to ask for more help or divert
> resources.
>
> For items involving code hosted on the Xen.org site (including qemu-xen),
> that means a likelihood of having the feature code-complete and mostly
> working by the feature freeze.  (It's OK if there are still bugs to be
> worked out.)  For items in Linux, I think it would mean having items on track
> to make it into the kernel released just after the scheduled 4.5 time frame.
> Not sure what that means for libvirt. :-)
>
> For items involving code hosted on the Xen.org site (including qemu-xen),
> that means a likelihood of having the feature code-complete and mostly
> working by the feature freeze.  (It's OK if there are still bugs to be
> worked out.)  For items in Linux, I think it would mean having items on track
> to make it into the kernel released just after the scheduled 4.5 time frame.
> Not sure what that means for libvirt. :-)
>
> = Timeline =
>
> We are planning on a 9-month release cycle.  Based on that, below are
> our estimated dates:
> * Feature Freeze: 10th September 2014
> * First RC: 10th October
> * Release: 10th December 2014
>
> The RCs and release will of course depend on stability and bugs, and
> will therefore be fairly unpredictable.  The feature freeze may be
> slipped for especially important features which are near completion.
>
> = Prognosis =
>
> The prognosis is a numerical value of the likehood of the feature/code
> making it in the code-base.
>
> If folks prefer the fair, good, excellent marker I can switch over to
> that.
>
> = Open =
>
> * Andrew Cooper  Prognosis:   100 %
>      libx{c,l} error handling cleanup
>      New migration.
>      cpuid leveling
>
> * Andrew Benniest  Prognosis:   100 %
>      Netback multiqueue
>
> * Arianna Avanzini  Prognosis:   100 %
>      block multiqueue
>      XEN_DOMCTL_memory_mapping hypercall for ARM
>
> * Elena Ufimtseva  Prognosis:   0 %
>      vNUMA in Xen
>      vNUMA in Linux
>
> * Boris Ostrovsky  Prognosis:   100 %
>      VPMU - 'perf' support in Xen
>      VPMU - 'perf' support in Linux
>      vAPIC in PVHVM guests
>
> * Bob Liu  Prognosis:   100 %
>      tmem cleanups/fixes
>      1TB slow destruction
>
> * Dario Faggioli  Prognosis:   0 %
>      Soft affinity for vcpus (was NUMA affinity for vcpus)
>
> * Matt Wilson  Prognosis:   0 %
>      HVM guest NUMA
>
> * Don Slutz  Prognosis:   100 %
>      Bigger PCI hole in QEMU
>      Re-write of HPET
>
> * David Vrabel:  Prognosis:   100 %
>      New migration.
>
> * Daniel Kiper  Prognosis:   100 %
>      GRUB2 multiboot2
>      Xen multiboot2 support
>      Linux pvops of Xen EFI hypercall support
>      libxl/xl - xm compatibility mode for mem-max and mem-set;
>      Rearrange and cleanup installation destination directories (/var -> var/lib/xen)
>
> * George Dunlap:  Prognosis:   100 %
>      Default to credit2
>      >  cpu pinning, numa affinity and cpu reservation
>
> * Roger Pau Monn챕  Prognosis:   100 %
>      Xen PVH dom0
>      PVH FreeBSD dom0
>
> * Konrad Rzeszutek Wilk  Prognosis:   30 %
>      NUMA memory scrubbing
>      Performance fixes for PCI passthrough
>
> * Kelly Zytaruk  Prognosis:   100 %
>      AMD Radeon PCI GPU passthrough
>
> * Chen, Tiejun  Prognosis:   100 %
>      Intel IGD PCI GPU passthrough
>
> * Mukesh Rathor  Prognosis:   100 %
>      Xen PVH dom0
>      Linux PVH dom0
>
> * Wei Liu  Prognosis:   100 %
>      Adding missing 'xend' features in libxl
>      xl list -l on a dom0-only system
>      xl list -l doesn't contain tty console port
>      xl: passing more defaults in configuration in xl.conf
>      >  There are a number of options for which it might be useful to pass a default in xl.conf.  For example, if we could have a default "backend" parameter for vifs, then it would be easy to switch back and forth between a backend in a driver domain and a backend in dom0.
>
> * Ian Campbel  Prognosis:   100 %
>      OSSTest: libvirt
>      OSSTest: upstream QEMU
>
> * Ian Jackson  Prognosis:   100 %
>      xl does not handle migrate interruption gracefully
>      >  If you start a localhost migrate, and press "Ctrl-C" in the middle, you get two hung domains
>
> * Stefano Stabellini  Prognosis:   100 %
>      <NONE>
>
> * Julien Grall  Prognosis:   100 %
>      ARM IOMMU support
>
> * Malcolm Crossley  Prognosis:   100 %
>      IOMMU ABI for guests to map their DMA regions
>
> * Zoltan Kiss  Prognosis:   100 %
>      Netback grant table manipulations
>      "Short" grant copy (just header) of packets.
>
> * Feng Wu  Prognosis:   100 %
>      SMAP
>      alternative_asm in Xen
>
> * Zhang, Yang Z  Prognosis:   100 %
>      dirty vram / IOMMU bug
>
> * Paul Durrant  Prognosis:   100 %
>      ioreq-server, aka secondary emulators
>
> * Jan Beulich  Prognosis:   100 %
>      Stability
>
> * Olaf Hering  Prognosis:   100 %
>      libvirt and xl discard support, so that libvirt can start using it
>      pvscsi should be targeted for 4.5, a prototype exists
>      live migration knobs, there is no suitable code yet, just ideas
>
> * Joe Doe aka not assigned to anybody  Prognosis:   0 %
>      PoD fixes
>      TLB flushing without locks in Xen
>      xl does not support specifying virtual function for passthrough device
>      >  http://bugs.xenproject.org/xen/bug/22
>      PCI hole resize support hvmloader/qemu-traditional/qemu-upstream with PCI/GPU passthrough
>      >  http://bugs.xenproject.org/xen/bug/28
>
>
>
>
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