Re: [Qemu-devel] Maintainers, please tell us how to boot your machines! - Philippe Mathieu-Daudé

From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: Markus Armbruster <armbru@redhat.com>, qemu-devel@nongnu.org
Cc: "Paul Burton" <pburton@wavecomp.com>,
	"Chris Wulff" <crwulff@gmail.com>,
	"Sagar Karandikar" <sagark@eecs.berkeley.edu>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Andrew Jeffery" <andrew@aj.id.au>,
	"Anthony Green" <green@moxielogic.com>,
	"Palmer Dabbelt" <palmer@sifive.com>,
	"Mark Cave-Ayland" <mark.cave-ayland@ilande.co.uk>,
	"Max Filippov" <jcmvbkbc@gmail.com>,
	"Alistair Francis" <Alistair.Francis@wdc.com>,
	"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
	"Guan Xuetao" <gxt@mprc.pku.edu.cn>,
	"Marek Vasut" <marex@denx.de>, "Rob Herring" <robh@kernel.org>,
	"Stefano Stabellini" <sstabellini@kernel.org>,
	"Jia Liu" <proljc@gmail.com>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Helge Deller" <deller@gmx.de>,
	"David Hildenbrand" <david@redhat.com>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Halil Pasic" <pasic@linux.ibm.com>,
	"Christian Borntraeger" <borntraeger@de.ibm.com>,
	"Hervé Poussineau" <hpoussin@reactos.org>,
	"Antony Pavlov" <antonynpavlov@gmail.com>,
	"Anthony Perard" <anthony.perard@citrix.com>,
	"David Gibson" <david@gibson.dropbear.id.au>,
	"Artyom Tarasenko" <atar4qemu@gmail.com>,
	"Joel Stanley" <joel@jms.id.au>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Jean-Christophe Dubois" <jcd@tribudubois.net>,
	"Alistair Francis" <alistair@alistair23.me>,
	"Fabien Chouteau" <chouteau@adacore.com>,
	"Beniamino Galvani" <b.galvani@gmail.com>,
	"Paul Durrant" <paul.durrant@citrix.com>,
	"Peter Chubb" <peter.chubb@nicta.com.au>,
	"Cédric Le Goater" <clg@kaod.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Stafford Horne" <shorne@gmail.com>,
	"Andrey Smirnov" <andrew.smirnov@gmail.com>,
	"Richard Henderson" <rth@twiddle.net>,
	"Igor Mitsyanko" <i.mitsyanko@gmail.com>,
	"Bastian Koppelmann" <kbastian@mail.uni-paderborn.de>,
	"Cornelia Huck" <cohuck@redhat.com>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Andrew Baumann" <Andrew.Baumann@microsoft.com>,
	"Subbaraya Sundeep" <sundeep.lkml@gmail.com>,
	"Aleksandar Rikalo" <arikalo@wavecomp.com>,
	"Michael Walle" <michael@walle.cc>,
	"Thomas Huth" <huth@tuxfamily.org>,
	"Aleksandar Markovic" <amarkovic@wavecomp.com>,
	"Jan Kiszka" <jan.kiszka@web.de>,
	"Aurelien Jarno" <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] Maintainers, please tell us how to boot your machines!
Date: Thu, 16 May 2019 22:07:12 +0200	[thread overview]
Message-ID: <3c7c7980-bb0a-c6f5-1f7d-56054190bb25@redhat.com> (raw)
In-Reply-To: <87d0mwatbu.fsf@dusky.pond.sub.org>

Hi Markus,

On 3/12/19 6:36 PM, Markus Armbruster wrote:
> Dear board code maintainers,
> 
> This is a (rather late) follow-up to the last QEMU summit.  Minutes[*]:
> 
>  * Deprecating unmaintained features (devices, targets, backends) in QEMU
> 
>    QEMU has a mechanism to deprecate features but there remains a lot of
>    old unmaintained code.  Refactoring is hindered by untested legacy
>    code, so there is a desire to deprecate unmaintained features more
>    often.
> 
>    [...]
> 
>    We should require at least a minimal test for each board; if nobody
>    cares enough to come up with one, that board should be deprecated.
> 
>    [...]
> 
>    Also see the qemu-devel discussion about deprecating code:
>    https://lists.nongnu.org/archive/html/qemu-devel/2018-10/msg05828.html.
> 
> That's a link to "Minutes of KVM Forum BoF on deprecating stuff".
> Quote:
> 
>  * One obvious class of candidates for removal is machines we don't know
>    how to boot, or can't boot, say because we lack required firmware
>    and/or OS.
> 
>    Of course, "can boot" should be an automated test.  As a first step
>    towards that, we should at least document how to boot each machine.
>    We're going to ask machine maintainers to do that.
> 
> Let's get going on this.
> 
> I gathered the machine types, mapped them to source files, which I fed
> to get_maintainer.pl.  Results are appended.  If you're cc'ed,
> MAINTAINERS fingers you for at least one machine type's source file.
> Please tell us for all of them how to to a "meaningful" boot test.
> 
> For now, what's "meaningful" is entirely up to you.  Booting Linux
> certainly is.
> 
> Make sure to include a complete QEMU command line.  If your QEMU command
> line requires resources beyond the QEMU source tree and what we build
> from it, please detail them, and provide download URLs as far as
> possible.
> 
> Goals for this exercise:
> 
> * Gather information we need to cover more machines in our automated
>   testing.
> 
>   Related work:
>   [PATCH v4 00/19] Acceptance Tests: target architecture support
>   Message-Id: <20190312121150.8638-1-crosa@redhat.com>
>   https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg03881.html
> 
> * Maybe identify a few machines we don't know how to boot anymore.
> 
> Thanks in advance for your help!

How do you want to proceed with all the information provided in this
thread? I think a big table in the wiki collecting the answers is ideal.
What do you think?

Regards,

Phil.