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Re: [Qemu-devel] [PATCH v5 0/5] don't use NVDIMM for balooning


From: Igor Mammedov
Subject: Re: [Qemu-devel] [PATCH v5 0/5] don't use NVDIMM for balooning
Date: Thu, 4 Feb 2016 12:58:22 +0100

On Thu,  4 Feb 2016 14:37:18 +0300
Vladimir Sementsov-Ogievskiy <address@hidden> wrote:

CCing Luiz as he might be interested in balloon stuff.

> v5: do not use qapi
>  0002-0004: new patches
>  0005: white list instead of black list
> 
> v4:
>  0001: Reviewed-by: Eric Blake <address@hidden>
>  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.
> 
> CC: Vladimir Sementsov-Ogievskiy <address@hidden>
> CC: Denis V. Lunev <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> CC: Xiao Guangrong <address@hidden>
> CC: "Michael S. Tsirkin" <address@hidden>
> CC: Igor Mammedov <address@hidden>
> CC: Eric Blake <address@hidden>
> CC: Markus Armbruster <address@hidden>
> 
> Vladimir Sementsov-Ogievskiy (5):
>   move get_current_ram_size to virtio-balloon.c
>   pc-dimm: rename pc_dimm_built_list()
>   pc-dimm: add pc_dimm_build_list()
>   virtio-balloon: rewrite get_current_ram_size()
>   balloon: Use only 'pc-dimm' type dimm for ballooning
> 
>  hw/mem/pc-dimm.c                | 47 
> ++++++++++++++++-------------------------
>  hw/virtio/virtio-balloon.c      | 19 +++++++++++++++++
>  include/exec/cpu-common.h       |  1 -
>  include/hw/mem/pc-dimm.h        |  3 +++
>  stubs/qmp_pc_dimm_device_list.c |  5 -----
>  5 files changed, 40 insertions(+), 35 deletions(-)
> 




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