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


From: Vishal Verma
Subject: Re: [Qemu-devel] [PATCH v2 0/8] nvdimm: hotplug support
Date: Thu, 18 Aug 2016 12:54:39 -0600
User-agent: Mutt/1.5.24 (2015-08-30)

On 08/18, Dan Williams wrote:
> [ 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?

I've just sent out a patch that should fix this:
https://lists.01.org/pipermail/linux-nvdimm/2016-August/006637.html



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