Hi Stephen, > -----Original Message----- > From: Stephen Hemminger <step...@networkplumber.org> > Sent: Friday, June 30, 2023 12:10 AM > To: Thanos Makatos <thanos.maka...@nutanix.com> > Cc: David Marchand <david.march...@redhat.com>; Xia, Chenbo > <chenbo....@intel.com>; dev <dev@dpdk.org>; Thomas Monjalon > <tho...@monjalon.net>; Liang, Cunming <cunming.li...@intel.com>; Lu, > Xiuchun <xiuchun...@intel.com>; Li, Miao <miao...@intel.com>; Wu, Jingjing > <jingjing...@intel.com>; john.g.john...@oracle.com; Stefan Hajnoczi > <stefa...@redhat.com>; Marc-Andre Lureau <marcandre.lur...@redhat.com>; > Maxime Coquelin <maxime.coque...@redhat.com>; Swapnil Ingle > <swapnil.in...@nutanix.com>; John Levon <john.le...@nutanix.com>; Liu, > Changpeng <changpeng....@intel.com>; Jagannathan Raman > <jag.ra...@oracle.com>; Elena Ufimtseva <elena.ufimts...@oracle.com> > Subject: Re: [dpdk-dev] [PATCH 0/9] Introduce vfio-user library > > On Fri, 18 Dec 2020 14:07:20 +0000 > Thanos Makatos <thanos.maka...@nutanix.com> wrote: > > > > Hello, > > > > > > On Fri, Dec 18, 2020 at 8:54 AM Chenbo Xia <chenbo....@intel.com> > 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- > de...@nongnu.org/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
