Re: [Xen-devel] Xen 4.2 TODO List Update

[Roger Pau Monnà <roger.pau@xxxxxxxxxxxxx>]

2012/1/23 Ian Campbell <Ian.Campbell@xxxxxxxxxx>:
> Newly updated list follows. Please send me corrections (especially
> "done"). I've stopped CCing everyone, since I guess it is mostly spam to
> the majority.
>
> hypervisor, blockers:
>
> Â Â Â* round-up of the closing of the security hole in MSI-X
> Â Â Â Âpassthrough (uniformly - i.e. even for Dom0 - disallowing write
> Â Â Â Âaccess to MSI-X table pages). (Jan Beulich -- more fixes
> Â Â Â Ârequired than first thought, patches posted)
> Â Â Â* domctls / sysctls set up to modify scheduler parameters, like
> Â Â Â Âthe credit1 timeslice and schedule rate. (George Dunlap)
> Â Â Â* get the interface changes for sharing/paging/mem-events done and
> Â Â Â Âdusted so that 4.2 is a stable API that we hold to. (Tim Deegan,
> Â Â Â ÂAndres Lagar-Cavilla et al)
> Â Â Â Â Â Â Â* mem event ring management posted, seems close to going
> Â Â Â Â Â Â Â Âin.
> Â Â Â Â Â Â Â* sharing patches posted
>
> tools, blockers:
>
> Â Â Â* libxl stable API -- we would like 4.2 to define a stable API
> Â Â Â Âwhich downstream's can start to rely on not changing. Aspects of
> Â Â Â Âthis are:
> Â Â Â Â Â Â Â* event handling (Ian Jackson, posted several rounds,
> Â Â Â Â Â Â Â Ânearing completion?)
> Â Â Â Â Â Â Â* drop libxl_device_model_info (move bits to build_info or
> Â Â Â Â Â Â Â Âelsewhere as appropriate) (Ian Campbell, first RFC sent)
> Â Â Â Â Â Â Â* add libxl_defbool and generally try and arrange that
> Â Â Â Â Â Â Â Âmemset(foo,0,...) requests the defaults (Ian Campbell,
> Â Â Â Â Â Â Â Âfirst RFC sent)
> Â Â Â Â Â Â Â* topologyinfo datastructure should be a list of tuples,
> Â Â Â Â Â Â Â Ânot a tuple of lists. (nobody currently looking at this,
> Â Â Â Â Â Â Â Ânot 100% sure this makes sense, could possibly defer and
> Â Â Â Â Â Â Â Âchange after 4.2 in a compatible way)
> Â Â Â* xl to use json for machine readable output instead of sexp by
> Â Â Â Âdefault (Ian Campbell to revisit existing patch)
> Â Â Â* xl support for vcpu pinning (Dario Faggioli)
> Â Â Â* xl feature parity with xend wrt driver domain support (George
> Â Â Â ÂDunlap)
> Â Â Â* Integrate qemu+seabios upstream into the build (patches
> Â Â Â Âreposted, pending). No change in default qemu for 4.2.
> Â Â Â* More formally deprecate xm/xend. Manpage patches already in
> Â Â Â Âtree. Needs release noting and communication around -rc1 to
> Â Â Â Âremind people to test xl.
>
> hypervisor, nice to have:
>
> Â Â Â* solid implementation of sharing/paging/mem-events (using work
> Â Â Â Âqueues) (Tim Deegan, Olaf Herring et al)
> Â Â Â* A long standing issue is a fully synchronized p2m (locking
> Â Â Â Âlookups) (Andres Lagar-Cavilla)
> Â Â Â* NUMA improvement: domain affinity consistent with cpupool
> Â Â Â Âmembership (Dario Faggioli, Jeurgen Gross -- patch posted)
>
> tools, nice to have:
>
> Â Â Â* Hotplug script stuff -- internal to libxl (I think, therefore I
> Â Â Â Âdidn't put this under stable API above) but still good to have
> Â Â Â Âfor 4.2? Roger Pau Monet was looking at this but its looking
> Â Â Â Âlike a big can-o-worms. (discussion on-going)
> Â Â Â* Block script support -- follows on from hotplug script (Roger
> Â Â Â ÂPau Monet)
> Â Â Â* libyajl v2 support (patch posted by Roger Pau Monet, blocked on
> Â Â Â Âautoconf?)
> Â Â Â* Configure/control paging via xl/libxl (Olaf Herring)
> Â Â Â* Upstream qemu feature patches:
> Â Â Â Â Â Â Â* Upstream qemu PCI passthrough support (Anthony Perard)
> Â Â Â Â Â Â Â* Upstream qemu save restore (Anthony Perard)
> Â Â Â* Nested-virtualisation (currently should be marked
> Â Â Â Âexperimental,likely to release that way? Consider nested-svm
> Â Â Â Âseparate to nested-vmx. Nested-svm is in better shape)


Just a random thought, but I find it quite annoying to need latex to
compile the documentation. I think it will be wise to create a new
Makefile target, like man-pages and install-man-pages to allow the
user to build and install man pages only (or don't abort docs build if
latex is not found). Personally I don't have latex on my server, and I
don't want to install it, but I would like to have the man pages when
building Xen from source.

> Tools, need to decide if pre- or post-4.2 feature:
>
> Â Â Â* Autoconf (Roger Pau Monet posted a patch)
>
>
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