[PATCH v1] xSplice initial foundation patches.

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

Changelog (since the RFC and the Seattle Xen presentation)
 - Finished off some of the work around the build-id.
 - Settled on the preemption mechanism.
 - Cleaned the patches a lot up, broke them up to easy
   review for maintainers.

*What is xSplice?*

A mechanism to  binarily patch the running hypervisor with new
opcodes that have come about due to primarily security updates.

*What will this patchset do once I've it*

Nothing. No patching at all. But you will have the API and
hypercalls that will server as foundation for the rest of the
code to come.

*Why are you emailing me?*

Please please review the patches. They are the foundation of the
design and any further work to be done (further work is outlined
in http://wiki.xen.org/wiki?title=XSplice)

*OK, what do you have?*

They are located at a git tree:
  git://xenbits.xen.org/people/konradwilk/xen.git xsplice.v1

And here is a brief description of the patches:

 [PATCH v1 1/5] xsplice: Design document.
   If you like it as paper and have a red pen ready,
   please print out http://darnok.org/xsplice.html
 
Implementation of the design: 
 [PATCH v1 2/5] xen/xsplice: Hypervisor implementation of
 [PATCH v1 3/5] libxc: Implementation of XEN_XSPLICE_op in libxc.

And a tool to use the toolstack libxc commands:
 [PATCH v1 4/5] xen-xsplice: Tool to manipulate xsplice payloads.

And the implementation to provide the build-id:
 [PATCH v1 5/5] xsplice: Use ld-embedded build-ids

Thank you!

 docs/misc/xsplice.markdown          | 1370 +++++++++++++++++++++++++++++++++++
 tools/libxc/include/xenctrl.h       |   18 +
 tools/libxc/xc_misc.c               |  300 ++++++++
 tools/misc/Makefile                 |    4 +
 tools/misc/xen-xsplice.c            |  456 ++++++++++++
 xen/arch/x86/Makefile               |    4 +-
 xen/arch/x86/xen.lds.S              |    5 +
 xen/common/Makefile                 |    1 +
 xen/common/keyhandler.c             |    8 +-
 xen/common/sysctl.c                 |    6 +
 xen/common/xsplice.c                |  528 ++++++++++++++
 xen/include/public/sysctl.h         |  174 +++++
 xen/include/xen/version.h           |    1 +
 xen/include/xen/xsplice.h           |    9 +
 xen/xsm/flask/hooks.c               |    3 +
 xen/xsm/flask/policy/access_vectors |    2 +
 16 files changed, 2886 insertions(+), 3 deletions(-)

Konrad Rzeszutek Wilk (4):
      xsplice: Design document.
      xen/xsplice: Hypervisor implementation of XEN_XSPLICE_op
      libxc: Implementation of XEN_XSPLICE_op in libxc.
      xen-xsplice: Tool to manipulate xsplice payloads.

Martin Pohlack (1):
      xsplice: Use ld-embedded build-ids