Hi Stephen, > -----Original Message----- > From: Stephen Hemminger <[email protected]> > Sent: Friday, June 30, 2023 12:10 AM > To: Thanos Makatos <[email protected]> > Cc: David Marchand <[email protected]>; Xia, Chenbo > <[email protected]>; dev <[email protected]>; Thomas Monjalon > <[email protected]>; Liang, Cunming <[email protected]>; Lu, > Xiuchun <[email protected]>; Li, Miao <[email protected]>; Wu, Jingjing > <[email protected]>; [email protected]; Stefan Hajnoczi > <[email protected]>; Marc-Andre Lureau <[email protected]>; > Maxime Coquelin <[email protected]>; Swapnil Ingle > <[email protected]>; John Levon <[email protected]>; Liu, > Changpeng <[email protected]>; Jagannathan Raman > <[email protected]>; Elena Ufimtseva <[email protected]> > Subject: Re: [dpdk-dev] [PATCH 0/9] Introduce vfio-user library > > On Fri, 18 Dec 2020 14:07:20 +0000 > Thanos Makatos <[email protected]> wrote: > > > > Hello, > > > > > > On Fri, Dec 18, 2020 at 8:54 AM Chenbo Xia <[email protected]> > wrote: > > > > *librte_vfio_user* library is an implementation of VFIO-over- > socket[1] > > > (also > > > > known as vfio-user) which is a protocol that allows a device to be > virtualized > > > > in a separate process outside of QEMU. > > > > > > What is the status of the specification on QEMU side? > > > Integrating an implementation in DPDK is premature until we have an > > > agreed specification. > > > > We're in the process of reviewing the specification, the latest version > (v7) is here: https://www.mail-archive.com/qemu- > [email protected]/msg763207.html. We haven't had any reviews yet for that > revision, IMO we're getting close. > > > > FYI John Johnson is implementing the relevant changes in multiprocess > QEMU. John Levon, Swapnil, and I are implementing the server part in > libvfio-user (formerly known as MUSER). We also have a mailing list now: > https://lists.nongnu.org/mailman/listinfo/libvfio-user-devel. We've been > working on integrating the two parts. > > > > Finally, Changpeng is implementing an NVMe controller in SPDK. We're > trying to make it work with multiprocess QEMU and libvfio-user, we're very > close. > > > > > > Any status update? It has been 3 years. > If not ready will change this patchset to state "awaiting upstream". > I.e not ready until QEMU is ready
There is already a vfio-user lib in open source: https://github.com/nutanix/libvfio-user So for this lib, we may just use this libvfio-user instead of introducing new one in DPDK, but we will still submit patches about emulating devices in DPDK. Thanks, Chenbo
