[RFC PATCH 0/6] Add gnttab IOCTLs that allow sharing already existing memory

[Rafał Wojdyła <omeg@xxxxxxxxxxxxxxxxxxxxxx>]

This series of patches adds new GNTTAB IOCTLs that allow sharing memory
that the client has already prepared (existing IOCTLs share driver-allocated
memory). The new IOCTLs don't use RequestId numbers as input to simplify
client code. Xencontrol is updated to use the new IOCTLs.

Rafał Wojdyła (6):
  Fix minor xencontrol issues
  Fix parameter annotation for __FreeCapturedBuffer()
  __CaptureUserBuffer(): zero CapturedBuffer on failure in all cases
  Remove unused function declarations from ioctls.h
  Add gnttab IOCTLs that allow sharing already existing memory
  xencontrol: use IOCTL_XENIFACE_GNTTAB_*_V2 IOCTLs

 include/xencontrol.h                |  30 +-
 include/xeniface_ioctls.h           |  94 +++-
 src/xencontrol/xencontrol.c         | 186 +++-----
 src/xencontrol/xencontrol_private.h |  33 --
 src/xeniface/ioctl_gnttab.c         | 711 +++++++++++++++++-----------
 src/xeniface/ioctls.c               |  31 +-
 src/xeniface/ioctls.h               |  97 ++--
 src/xeniface/irp_queue.c            |  27 +-
 src/xeniface/irp_queue.h            |   2 +-
 9 files changed, 696 insertions(+), 515 deletions(-)

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2.40.1.windows.1