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

[Cam Macdonell]

On Mon, Jul 26, 2010 at 7:48 AM, Anthony Liguori <address@hidden> wrote:
> 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).

It is against qemu-kvm.git.  Is qemu_ram_map() going into qemu.git?
Another function I use (and virtio in qemu-kvm uses as well) is
kvm_set_irqfd() that is not qemu.git either.  Do I need ifdef these
functions with CONFIG_KVM?

Please advise as to how to handle these two functions and then I can
rebase against qemu.git.

Thanks,
Cam

>
> 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
>>
>>
>>
>>
>
>