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    Subject[PATCH 00/18] introduce the Xen PV Calls backend
    Hi all,

    this series introduces the backend for the newly introduced PV Calls
    procotol.

    PV Calls is a paravirtualized protocol that allows the implementation of
    a set of POSIX functions in a different domain. The PV Calls frontend
    sends POSIX function calls to the backend, which implements them and
    returns a value to the frontend and acts on the function call.

    For more information about PV Calls, please read:

    https://xenbits.xen.org/docs/unstable/misc/pvcalls.html

    I tried to split the source code into small pieces to make it easier to
    read and understand. Please review!


    Stefano Stabellini (18):
    xen: introduce the pvcalls interface header
    xen/pvcalls: introduce the pvcalls xenbus backend
    xen/pvcalls: initialize the module and register the xenbus backend
    xen/pvcalls: xenbus state handling
    xen/pvcalls: connect to a frontend
    xen/pvcalls: handle commands from the frontend
    xen/pvcalls: implement socket command
    xen/pvcalls: implement connect command
    xen/pvcalls: implement bind command
    xen/pvcalls: implement listen command
    xen/pvcalls: implement accept command
    xen/pvcalls: implement poll command
    xen/pvcalls: implement release command
    xen/pvcalls: disconnect and module_exit
    xen/pvcalls: introduce the ioworker
    xen/pvcalls: implement read
    xen/pvcalls: implement write
    xen: introduce a Kconfig option to enable the pvcalls backend

    drivers/xen/Kconfig | 12 +
    drivers/xen/Makefile | 1 +
    drivers/xen/pvcalls-back.c | 1317 ++++++++++++++++++++++++++++++++++++
    include/xen/interface/io/pvcalls.h | 117 ++++
    4 files changed, 1447 insertions(+)
    create mode 100644 drivers/xen/pvcalls-back.c
    create mode 100644 include/xen/interface/io/pvcalls.h

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