Re: [RFC] KVM "fake DAX" device flushing

From: Pankaj Gupta
Date: Thu Oct 12 2017 - 06:39:57 EST



> 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
>