Re: [Qemu-devel] [PATCH v4 0/3] don't use NVDIMM for balooning

["Denis V. Lunev" <den@openvz.org>]

On 01/28/2016 09:51 AM, Vladimir Sementsov-Ogievskiy wrote:
> v4:
>   0001: Reviewed-by: Eric Blake <eblake@redhat.com>
>   second patch is splitted to 0002 and 0003
>   0002: Add 'type' field instead of 'balloonable' to PCDIMMDeviceInfo
>   0003: chec 'type' instead of 'balloonable'
>
> v3:
>      - do not use additional class variable
>
> NVDIMM for now is planned to use as a backing store for DAX filesystem
> in the guest and thus this memory is excluded from guest memory
> management and LRUs.
>
> In this case libvirt running QEMU along with configured balloon almost
> immediately inflates balloon and effectively kill the guest as
> qemu counts nvdimm as part of the ram.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> CC: Stefan Hajnoczi <stefanha@redhat.com>
> CC: Xiao Guangrong <guangrong.xiao@linux.intel.com>
> CC: "Michael S. Tsirkin" <mst@redhat.com>
> CC: Igor Mammedov <imammedo@redhat.com>
> CC: Eric Blake <eblake@redhat.com>
> CC: Markus Armbruster <armbru@redhat.com>
>
> Vladimir Sementsov-Ogievskiy (3):
>    move get_current_ram_size to virtio-balloon.c
>    pcdimm: add 'type' field to PCDIMMDeviceInfo
>    balloon: don't use NVDIMM for ballooning
>
>   hw/mem/pc-dimm.c                | 27 +--------------------------
>   hw/virtio/virtio-balloon.c      | 29 +++++++++++++++++++++++++++++
>   include/exec/cpu-common.h       |  1 -
>   qapi-schema.json                |  5 ++++-
>   stubs/qmp_pc_dimm_device_list.c |  5 -----
>   5 files changed, 34 insertions(+), 33 deletions(-)
>
ping