From: Peter Krempa <pkrempa@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: "Elena Ufimtseva" <elena.ufimtseva@oracle.com>,
"John Johnson" <john.g.johnson@oracle.com>,
"thuth@redhat.com" <thuth@redhat.com>,
"Jag Raman" <jag.raman@oracle.com>,
"swapnil.ingle@nutanix.com" <swapnil.ingle@nutanix.com>,
"john.levon@nutanix.com" <john.levon@nutanix.com>,
"alex.bennee@linaro.org" <alex.bennee@linaro.org>,
"Markus Armbruster" <armbru@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@gmail.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"thanos.makatos@nutanix.com" <thanos.makatos@nutanix.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"philmd@redhat.com" <philmd@redhat.com>
Subject: Re: [PATCH v3 03/12] vfio-user: define vfio-user-server object
Date: Fri, 5 Nov 2021 14:54:15 +0100 [thread overview]
Message-ID: <YYU3h16iVbY+lAzH@angien.pipo.sk> (raw)
In-Reply-To: <YYUvZjg0lmaWE223@redhat.com>
On Fri, Nov 05, 2021 at 14:19:34 +0100, Kevin Wolf wrote:
> Am 05.11.2021 um 11:08 hat Markus Armbruster geschrieben:
> > Kevin Wolf <kwolf@redhat.com> writes:
> >
> > > Am 04.11.2021 um 13:13 hat Markus Armbruster geschrieben:
[...]
> We can deprecate on two different levels. I think it's useful to do
> both:
>
> 1. Broad deprecation: Stable non-JSON interfaces are degraded to
> a HMP-like compatibility promise. Obviously, this can only be done
> for options that support JSON. Peter Maydell also wants to do this
> only after a big user (read: libvirt) has implemented and is
> using JSON, basically as a proof that the alternative is working.
>
> So this can certainly be done for -object. I believe libvirt also
> uses JSON for -device now, so this should be fine now, too. Possibly
> -drive (in favour of -blockdev), though I'm not completely sure if we
> have gotten rid of the final users of -drive. (CCing Peter Krempa for
> details.)
Libvirt uses JSON exclusively with -object (starting from qemu-6.0) and
with -device (starting from qemu-6.2).
We could also easily do -netdev if JSON support will be added for the
option as internally we already create the JSON object (so that the code
is identical for QMP hotplug) and just convert it back to the
commandline syntax.
Libvirt also uses JSON with -blockdev since -blockdev support was
introduced (IIRC qemu-4.2 added all the necessary bits for us).
If -blockdev is used libvirt does not use -drive at all (except for SD
cards for ARM boards), but that is not tested very well.
next prev parent reply other threads:[~2021-11-05 13:57 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 5:31 [PATCH v3 00/12] vfio-user server in QEMU Jagannathan Raman
2021-10-11 5:31 ` [PATCH v3 01/12] configure, meson: override C compiler for cmake Jagannathan Raman
2021-10-12 10:44 ` Paolo Bonzini
2021-10-11 5:31 ` [PATCH v3 02/12] vfio-user: build library Jagannathan Raman
2021-10-27 15:17 ` Stefan Hajnoczi
2021-10-29 14:17 ` Jag Raman
2021-11-01 9:56 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 03/12] vfio-user: define vfio-user-server object Jagannathan Raman
2021-10-27 15:40 ` Stefan Hajnoczi
2021-10-29 14:42 ` Jag Raman
2021-11-01 10:34 ` Stefan Hajnoczi
2021-11-04 12:13 ` Markus Armbruster
2021-11-04 14:39 ` Kevin Wolf
2021-11-05 10:08 ` Markus Armbruster
2021-11-05 13:19 ` Kevin Wolf
2021-11-05 13:54 ` Peter Krempa [this message]
2021-11-06 6:34 ` Markus Armbruster
2021-11-08 12:05 ` Kevin Wolf
2021-11-08 12:54 ` Peter Krempa
2021-11-04 16:48 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 04/12] vfio-user: instantiate vfio-user context Jagannathan Raman
2021-10-27 15:59 ` Stefan Hajnoczi
2021-10-29 14:59 ` Jag Raman
2021-11-01 10:35 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 05/12] vfio-user: find and init PCI device Jagannathan Raman
2021-10-27 16:05 ` Stefan Hajnoczi
2021-10-29 15:58 ` Jag Raman
2021-11-01 10:38 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 06/12] vfio-user: run vfio-user context Jagannathan Raman
2021-10-27 16:21 ` Stefan Hajnoczi
2021-10-28 21:55 ` John Levon
2021-10-11 5:31 ` [PATCH v3 07/12] vfio-user: handle PCI config space accesses Jagannathan Raman
2021-10-27 16:35 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 08/12] vfio-user: handle DMA mappings Jagannathan Raman
2021-10-11 5:31 ` [PATCH v3 09/12] vfio-user: handle PCI BAR accesses Jagannathan Raman
2021-10-27 16:38 ` Stefan Hajnoczi
2021-10-11 5:31 ` [PATCH v3 10/12] vfio-user: handle device interrupts Jagannathan Raman
2021-10-11 5:31 ` [PATCH v3 11/12] vfio-user: register handlers to facilitate migration Jagannathan Raman
2021-10-27 18:30 ` Stefan Hajnoczi
2021-12-15 15:49 ` Jag Raman
2021-10-11 5:31 ` [PATCH v3 12/12] vfio-user: acceptance test Jagannathan Raman
2021-10-11 22:26 ` Philippe Mathieu-Daudé
2021-10-27 16:42 ` Stefan Hajnoczi
2021-10-27 18:33 ` [PATCH v3 00/12] vfio-user server in QEMU Stefan Hajnoczi
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