Re: [Qemu-devel] [PATCH v2 0/8] nvdimm: hotplug support

[Dan Williams]

[ adding Vishal who implemented the kernel side of nvdimm hotplug support ]

On Thu, Aug 11, 2016 at 11:54 PM, Xiao Guangrong
<address@hidden> wrote:
> This patchset is against commit c597dc90fbcd6 (virtio-net: allow increasing
> rx queue siz) on pci branch of Michael's git tree and can be found at:
>       https://github.com/xiaogr/qemu.git nvdimm-hotplug-v2
>
> Changelog in v2:
>    Fixed signed integer overflow pointed out by Stefan Hajnoczi
>
> This patchset enables nvdimm hotplug support, it is used as pc-dimm hotplug,
> for example, a new nvdimm device can be plugged as follows:
> object_add memory-backend-file,id=mem3,size=10G,mem-path=/home/eric/nvdimm3
> device_add nvdimm,id=nvdimm3,memdev=mem3
>
> and unplug it as follows:
> device_del nvdimm3
> object_del mem3

Did you test this against the Linux NFIT hotplug support?  We just
found that the Linux driver is not properly registering for ACPI0012
event notification.  Is a notification sent on a 'device_add' event?