On Mon, Jun 17, 2019 at 11:14:50AM -0700, elena.ufimts...@oracle.com wrote: > From: Elena Ufimtseva <elena.ufimts...@oracle.com> > > Initial support of multi-process qemu > > Started with the presentation in October 2017 made by > Marc-Andre (Red Hat) and Konrad Wilk (Oracle) > (http://events17.linuxfoundation.org/sites/events/files/slides/KVM%20FORUM%20multi-process.pdf, > https://www.youtube.com/watch?v=Kq1-coHh7lg) and > continued in the BoF session at the KVM forum in 2018 with Jag leading > the discussion, the multi-process project is now in the prototype version > and presented by this patchset. > > The proof of the concept patches were posted on the qemu-devel mailing > list before the BoF session at the KVM forum and can be found here: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg566538.html > > This series presents the initial support for QEMU that can > launch some of the devices in the remote processes. > > Thanks to a v1 review and some of the question Stefan and Daniel asked, we > were able to incorporate your ideas into our goals. > > We would like to present version 2 of the patchset. > This version has addressed comments made during the review of v1 and includes: > > - support for libvirt fork/exec of remote processes; > QEMU is still capable of fork/execing the remote processes unless its > disabled > by seccomp. > When using libvirt, the daemon will spawn remote processes and pass the > communication > file descriptors to main QEMU process and the remote processes. > The libvirt patches are in the making and will be sent out shortly; > - using existing -device/-drive command line options to specify remote > devices with > additional suboptons; > - refractor message sending code; > - remove specific HMP/QMP commands and use the one that exist now; > - extend existing QMP commands; > - added timeout to communication channel; > > Following people contributed to this patchset: > > John G Johnson <john.g.john...@oracle.com> > Jagannathan Raman <jag.ra...@oracle.com> > Elena Ufimtseva <elena.ufimts...@oracle.com> > Kanth Ghatraju <kanth.ghatr...@oracle.com> > > For full concept writeup about QEMU disaggregation refer to > docs/devel/qemu-multiprocess.txt. > > This series has a limited scope and allows QEMU to launch > LSI SCSI controller emulation in the separate process and > execute HMP commands to manipulate the devices. > This series with appropriate libvirt patches allows to > launch a guest with remote processes using libvirt. > (libvirt patches will be posted and will be reflected in the reply to > this patch). > > Please refer to the docs/qemu-multiprocess.txt for usage > information. > > his series is based on qemu upstream commit > 3284aa128153750f14a61e8a96fd085e6f2999b6. > > TODO items: > - bus support for remote process (non-default); > - live migration; > - performance improvements; > - support for more devices; > - support for seccomp for remote processes; > - support for CPU disaggregated emulation; > > We would like to welcome all your ideas, concerns and questions > for this patchset.
For future versions please make sure the mails sent a fully threaded, so that all the patches are in-reply-to the cover letter mail, rather than each scattered as a standalone mail. The best way todo this is to use the excellent "git-publish" tool. The added benefit of git-publish is that it will CC all the subsystem maintainers whose code is touched https://github.com/stefanha/git-publish It is packaged in Debian, Ubuntu, Fedora & EPEL Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
