[PATCH v2 0/6] gnttab: add per-domain controls

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Hello,

First patch on the series is a trivial change to xenconsoled in order to
use xenforeignmemory stable library in order to map the shared console
ring instead of the unstable libxc interface. It's reviewed and ready to
go in.

Patches 2 and 3 allow setting the host wide command line `gnttab` option
on a per domain basis. That means selecting the max allowed grant table
version and whether transitive grants are allowed.

The last 3 patches attempt to implement support for creating guests
without a grant table. This requires some changes to xenstored in order
to partially support guests without a valid ring interface, as the lack
of grant table will prevent C xenstored from mapping the shared ring.
Note this is not an issue for Ocaml xenstored, as it still uses the
foreign memory interface to map the shared ring, and thus won't notice
the lack of grant table support on the domain.

Thanks, Roger.

Roger Pau Monne (6):
  tools/console: use xenforeigmemory to map console ring
  gnttab: allow setting max version per-domain
  gnttab: allow per-domain control over transitive grants
  tools/xenstored: use atexit to close interfaces
  tools/xenstored: partially handle domains without a shared ring
  gnttab: allow disabling grant table per-domain

 docs/man/xl.cfg.5.pod.in             |  12 +++
 docs/man/xl.conf.5.pod.in            |  14 +++
 tools/console/Makefile               |   4 +-
 tools/console/daemon/io.c            |  25 ++++--
 tools/helpers/init-xenstore-domain.c |   1 +
 tools/include/libxl.h                |  14 +++
 tools/libs/light/libxl_create.c      |   6 ++
 tools/libs/light/libxl_dm.c          |   2 +
 tools/libs/light/libxl_dom.c         |   2 +-
 tools/libs/light/libxl_types.idl     |   2 +
 tools/ocaml/libs/xc/xenctrl.ml       |   2 +
 tools/ocaml/libs/xc/xenctrl.mli      |   2 +
 tools/ocaml/libs/xc/xenctrl_stubs.c  |  12 ++-
 tools/xenstore/xenstored_core.h      |   2 +-
 tools/xenstore/xenstored_domain.c    |  91 ++++++++++----------
 tools/xenstore/xenstored_minios.c    |   4 +-
 tools/xl/xl.c                        |  15 ++++
 tools/xl/xl.h                        |   2 +
 tools/xl/xl_parse.c                  |  13 +++
 xen/arch/arm/domain_build.c          |   4 +
 xen/arch/x86/setup.c                 |   2 +
 xen/common/domain.c                  |   3 +-
 xen/common/grant_table.c             | 122 ++++++++++++++++++++++++++-
 xen/include/public/domctl.h          |  15 +++-
 xen/include/xen/grant_table.h        |   5 +-
 25 files changed, 310 insertions(+), 66 deletions(-)

-- 
2.33.0