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Date: Thu, 12 Oct 2017 06:39:48 -0400 (EDT)
From: Pankaj Gupta <pagupta@redhat.com>
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Subject: Re: [Qemu-devel] [RFC] KVM "fake DAX" device flushing
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To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, linux-nvdimm@ml01.01.org, linux-mm@kvack.org, jack@suse.cz, dan j williams <dan.j.williams@intel.com>, riel@redhat.com, haozhong zhang <haozhong.zhang@intel.com>, nilal@redhat.com, kwolf@redhat.com, pbonzini@redhat.com, ross zwisler <ross.zwisler@intel.com>, david@redhat.com, xiaoguangrong eric <xiaoguangrong.eric@gmail.com>


> On Thu, Oct 12, 2017 at 12:21:46AM +0530, Pankaj Gupta wrote:
> > We are sharing the prototype version of 'fake DAX' flushing
> > interface for the initial feedback. This is still work in progress
> > and not yet ready for merging.
> > 
> > Protoype right now just implements basic functionality without advanced
> > features with two major parts:
> > 
> > - Qemu virtio-pmem device
> >   It exposes a persistent memory range to KVM guest which at host side is
> >   file
> >   backed memory and works as persistent memory device. In addition to this
> >   it
> >   provides a virtio flushing interface for KVM guest to do a Qemu side sync
> >   for
> >   guest DAX persistent memory range.
> 
> Please post a draft VIRTIO device specification.

Sure! will prepare and share.

Thanks,
Pankaj
 
> 
> The VIRTIO Technical Committee resources and mailing lists are here:
> 
> https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio#feedback
> 
> Stefan
>