[Xen-devel] [RFC PATCH 0/4] Allow setting up shared memory areas between VMs from xl config files

[Zhongze Liu <blackskygg@xxxxxxxxx>]

This series implements the new xl config entry proposed in [1]. Users can use
the new config entry to statically setup shared memory areas among VMs so that
they could communicate with each other through the static shared memory areas. 

[1] Proposla to allow setting up shared memory areas between VMs from xl config 
files:
    https://lists.xenproject.org/archives/html/xen-devel/2017-07/msg03047.html

Cheers,

Zhongze Liu (4):
  libxl: introduce a new structure to represent static shared memory
    regions
  libxl:xl: add parsing code to parse "libxl_static_sshm" from xl config
    files
  x86/p2m : remove checks that forbid adding foreign pages between HVM
    guests
  libxl: support creation and destruction of static shared memory areas

 tools/libxl/Makefile         |   4 +-
 tools/libxl/libxl.h          |   4 +
 tools/libxl/libxl_create.c   |   7 +
 tools/libxl/libxl_dom.c      |   7 +
 tools/libxl/libxl_domain.c   |   6 +
 tools/libxl/libxl_internal.h |  14 ++
 tools/libxl/libxl_sshm.c     | 370 +++++++++++++++++++++++++++++++++++++++++++
 tools/libxl/libxl_types.idl  |  28 ++++
 tools/libxl/libxl_xshelp.c   |   8 +
 tools/libxl/libxlu_sshm.c    | 228 ++++++++++++++++++++++++++
 tools/libxl/libxlutil.h      |   6 +
 tools/xl/xl_parse.c          |  24 ++-
 xen/arch/x86/mm/p2m.c        |  20 ++-
 13 files changed, 718 insertions(+), 8 deletions(-)
 create mode 100644 tools/libxl/libxl_sshm.c
 create mode 100644 tools/libxl/libxlu_sshm.c

-- 
2.13.3


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