[Qemu-devel] [PATCH v5 0/5] PCI Shared Memory device

[Cam Macdonell <cam@cs.ualberta.ca>]

Latest patch for PCI shared memory device that maps a host shared memory object
to be shared between guests.

new in this series
    - fixed segfault for non-server case
    - code style fixes
    - removed limit on the number of guests
    - shared memory server is now in qemu.git/contrib
    - made irqfd/ioeventfd setup functions generic
    - removed interrupts when guest joined (let application handle it)

    v4:
    - moved to single Doorbell register and use datamatch to trigger different
      VMs rather than one register per eventfd
    - remove writing arbitrary values to eventfds.  Only values of 1 are now
      written to ensure correct usage

Cam Macdonell (5):
  Device specification for shared memory PCI device
  Support adding a file to qemu's ram allocation
  Adds two new functions for assigning ioeventfd and irqfds.
  Inter-VM shared memory PCI device
  the stand-alone shared memory server for inter-VM shared memory

 Makefile.target                         |    3 +
 contrib/ivshmem-server/Makefile         |   16 +
 contrib/ivshmem-server/README           |   30 ++
 contrib/ivshmem-server/ivshmem_server.c |  339 ++++++++++++++
 contrib/ivshmem-server/send_scm.c       |  208 +++++++++
 contrib/ivshmem-server/send_scm.h       |   19 +
 cpu-common.h                            |    2 +
 docs/specs/ivshmem_device_spec.txt      |   91 ++++
 exec.c                                  |   36 ++
 hw/ivshmem.c                            |  728 +++++++++++++++++++++++++++++++
 kvm-all.c                               |   44 ++
 kvm.h                                   |   14 +
 qemu-char.c                             |    6 +
 qemu-char.h                             |    3 +
 qemu-doc.texi                           |   25 +
 15 files changed, 1564 insertions(+), 0 deletions(-)
 create mode 100644 contrib/ivshmem-server/Makefile
 create mode 100644 contrib/ivshmem-server/README
 create mode 100644 contrib/ivshmem-server/ivshmem_server.c
 create mode 100644 contrib/ivshmem-server/send_scm.c
 create mode 100644 contrib/ivshmem-server/send_scm.h
 create mode 100644 docs/specs/ivshmem_device_spec.txt
 create mode 100644 hw/ivshmem.c