Re: [Qemu-devel] [PATCH v7 0/4] Inter-VM shared memory device

[Anthony Liguori]

On 06/15/2010 03:23 PM, Cam Macdonell wrote:
> Latest patch for PCI shared memory device that maps a host shared memory object
> to be shared between guests
>    

Is this against qemu.git or qemu-kvm.git?  It depends on functions like 
qemu_ram_map() which are not present in qemu.git (and are present in 
qemu-kvm.git).

Regards,

Anthony Liguori

> new in this series
>
>      - replace marking memory from v6 with marking device as unmigratable 
> indicating
>        that it should be unplugged before migration and re-added after.
>      - 'peer' case changed to require removal before migration, only 'master'
>        devices can be migrated while attached.
>
>      v6
>      - migration support with 'master' and 'peer' roles for guest to determine
>        who "owns" memory
>      - modified phys_ram_dirty array for marking memory as not to be migrated
>
>      v5:
>      - 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 ioeventfd setup function 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 (4):
>    Device specification for shared memory PCI device
>    Add function to assign ioeventfd to MMIO.
>    Support marking a device as non-migratable
>    Inter-VM shared memory PCI device
>
>   Makefile.target                    |    3 +
>   docs/specs/ivshmem_device_spec.txt |   96 +++++
>   hw/hw.h                            |    1 +
>   hw/ivshmem.c                       |  823 ++++++++++++++++++++++++++++++++++++
>   kvm-all.c                          |   32 ++
>   kvm.h                              |    1 +
>   qemu-char.c                        |    6 +
>   qemu-char.h                        |    3 +
>   qemu-doc.texi                      |   43 ++
>   savevm.c                           |   32 ++-
>   10 files changed, 1037 insertions(+), 3 deletions(-)
>   create mode 100644 docs/specs/ivshmem_device_spec.txt
>   create mode 100644 hw/ivshmem.c
>
>
>
>