[Xen-devel] [RFC PATCH V3] Implement 3-level event channel in Xen

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Hi all

This is another version of the patch series. Unfortunately the kernel side is
not available at the moment. :-(

Keir, Jan, Ian and David, are you happy with this design in general? I would
like to have explicit ACK / NACK on this if possible, as feature freeze for 4.3
is quite close now.

Changes since V2:
* new interface to register extended event channel ABI
* use vmap to simplify mapping
* replace MAX_EVTCHNS macro with inline function
* libxl: evtchn_l3 -> evtchn_extended

The most notable bit of this series is the interface change. In order to cope
with future ABIs, the interface is renamed to EVTCHNOP_register_extended. It
also provides supported ABI query, so that we can remove unused ABI in the
future.

The semantic meaning of EVTCHNOP_register_extended changes a bit. The `level'
in parameter now changes to `cmd', which means we should go down to specific
ABI routines. ABI-specific structures are still embedded in the union.

Changes since V1:
* move all evtchn related macros / struct definitions to event.h
* only allow 3-level evtchn for Dom0 and driver domains
* add evtchn_l3 flag in libxl


Wei.

Diffstat:
 tools/libxl/libxl_create.c         |    4 +
 tools/libxl/libxl_types.idl        |    1 +
 tools/libxl/xl_cmdimpl.c           |    2 +
 tools/libxl/xl_sxp.c               |    2 +
 xen/arch/arm/domain.c              |    1 +
 xen/arch/x86/domain.c              |    1 +
 xen/arch/x86/irq.c                 |    7 +-
 xen/common/domain.c                |    3 +
 xen/common/domctl.c                |    5 +-
 xen/common/event_channel.c         |  458 +++++++++++++++++++++++++++++++++---
 xen/common/keyhandler.c            |    6 +-
 xen/common/schedule.c              |    4 +-
 xen/include/asm-arm/types.h        |    7 +-
 xen/include/asm-x86/config.h       |    4 +-
 xen/include/public/domctl.h        |    3 +
 xen/include/public/event_channel.h |   44 ++++
 xen/include/public/xen.h           |   35 ++-
 xen/include/xen/event.h            |   85 ++++++-
 xen/include/xen/sched.h            |   65 ++---
 xen/xsm/flask/hooks.c              |    1 +
 20 files changed, 623 insertions(+), 115 deletions(-)


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel