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From: Markus Armbruster <armbru@redhat.com>
To: "Philippe Mathieu-Daudé" <philmd@redhat.com>
Cc: "Paul Burton" <pburton@wavecomp.com>,
	"Sagar Karandikar" <sagark@eecs.berkeley.edu>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Jason Wang" <jasowang@redhat.com>,
	"Mark Cave-Ayland" <mark.cave-ayland@ilande.co.uk>,
	qemu-devel@nongnu.org,
	"Alistair Francis" <Alistair.Francis@wdc.com>,
	"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Aleksandar Markovic" <aleksandar.qemu.devel@gmail.com>,
	qemu-ppc@nongnu.org,
	"Aleksandar Rikalo" <aleksandar.rikalo@rt-rk.com>,
	"Richard Henderson" <rth@twiddle.net>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Alistair Francis" <alistair@alistair23.me>,
	qemu-arm@nongnu.org, "David Gibson" <david@gibson.dropbear.id.au>,
	qemu-riscv@nongnu.org,
	"Bastian Koppelmann" <kbastian@mail.uni-paderborn.de>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Andrew Baumann" <Andrew.Baumann@microsoft.com>,
	"Jean-Christophe Dubois" <jcd@tribudubois.net>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Aurelien Jarno" <aurelien@aurel32.net>
Subject: Re: [PATCH-for-5.0 00/12] hw: Add missing error-propagation code
Date: Sat, 04 Apr 2020 07:55:54 +0200
Message-ID: <87mu7r23rp.fsf@dusky.pond.sub.org> (raw)
In-Reply-To: <dbee4e3d-afba-827d-4950-2ac9b99419ab@redhat.com> ("Philippe =?utf-8?Q?Mathieu-Daud=C3=A9=22's?= message of "Fri, 3 Apr 2020 19:53:01 +0200")

Philippe Mathieu-Daudé <philmd@redhat.com> writes:

> Hi Markus, Peter.
>
> On 3/31/20 3:23 PM, Markus Armbruster wrote:
>> Philippe Mathieu-Daudé <f4bug@amsat.org> writes:
>>
>>> This series is inspired of Peter fix:
>>> "hw/arm/xlnx-zynqmp.c: fix some error-handling code"
>>> https://www.mail-archive.com/qemu-devel@nongnu.org/msg691636.html
>>>
>>> Add a cocci script to fix the other places.
>>>
>>> Based-on: <20200324134947.15384-1-peter.maydell@linaro.org>
>>
>> I skimmed the code patches [PATCH 02-12/12], and they look like bug
>> fixes.  Other reviewers raised a few issues.
>>
>> I also skimmed the Coccinelle script [PATCH 01].  Peter pointed out a
>> few things it apparently missed (e.g. in review of PATCH 06+11).
>> Moreover, the bug pattern applies beyond object_property_set() &
>> friends.  Perhaps the script can be generalized.  No reason to hold
>> fixes.  We may want to add suitable notes to the scipt, though.
>>
>> Can you address the reviews in a v2, so we can get the fixes into -rc1,
>> due today?
>
> Status on this series (sorry I didn't update earlier).
>
> I addressed Peter's comments, improved/simplified/documented the cocci
> script (which I split in smaller ones).
>
> Peter suggested other functions can be checked too, not only the
> "^object_property_set_.*" matches. Indeed, more patches added. Some
> are big.
>
> Another suggestion is replace in init() 'NULL' Error* final argument
> by &error_abort. This can be another series on top.
> However I noticed we can reduce the error_propagate() generated calls
> in many places, when both init()/realize() exist and the property set
> is not dependent of parent operation, by moving these calls from
> realize() to init(). Another cocci script. But to make sense it has to
> be run previous the "add missing error_propagate" one.
>
> While writing the cocci patches, I had 3 different Coccinelle failures.
> Failures not due to a spatch bug, but timeout because C source hard to
> process. Indeed the C source code was dubious, could get some
> simplification rewrite. Then spatch could transform them. More patches
> in the middle.
>
> Now I'm at 47 patches, the reviewed patches at the end of the series.
> Too much for RC2. Since I don't think these are critical bugs, but
> improvements, are you OK to postpone this series to 5.1?

Punting bug fixes to a later release is always kind of sad, but getting
that many patches reviewed properly in time for -rc2 feels hopeless, and
the bugs old and unthreatending on first glance.

> If you think a patch deserves to be in 5.0, point me at it and I can
> send it ASAP with comments addressed. Else I'll post my series as
> -for-5.1 soon.

I'm okay with punting the whole series to 5.1.

We have quite some Error work pending for 5.1.  Beware of conflicts.

In particular, I now plan to make object_property_set() & friends return
a useful value.  This should make your patches a bit smaller.



      reply index

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25 19:18 Philippe Mathieu-Daudé
2020-03-25 19:18 ` [PATCH-for-5.0 01/12] scripts/coccinelle: Add script to catch missing error_propagate() calls Philippe Mathieu-Daudé
2020-03-26 21:32   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 02/12] hw/arm/bcm2835_peripherals: Add missing error-propagation code Philippe Mathieu-Daudé
2020-03-26 21:34   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 03/12] hw/arm/fsl-imx: " Philippe Mathieu-Daudé
2020-03-26 21:35   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 04/12] hw/arm/stm32fx05_soc: " Philippe Mathieu-Daudé
2020-03-25 20:51   ` Alistair Francis
2020-03-26 21:45   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 05/12] hw/i386/x86: " Philippe Mathieu-Daudé
2020-03-26 21:38   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 06/12] hw/dma/xilinx_axidma: " Philippe Mathieu-Daudé
2020-03-25 20:52   ` Alistair Francis
2020-03-26 21:46   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 07/12] hw/mips/cps: " Philippe Mathieu-Daudé
2020-03-26 21:43   ` Peter Maydell
2020-03-26 22:48   ` Aleksandar Markovic
2020-03-25 19:18 ` [PATCH-for-5.0 08/12] hw/mips/boston: " Philippe Mathieu-Daudé
2020-03-26 21:47   ` Peter Maydell
2020-03-26 22:50   ` Aleksandar Markovic
2020-03-25 19:18 ` [PATCH-for-5.0 09/12] hw/mips/mips_malta: " Philippe Mathieu-Daudé
2020-03-26 21:49   ` Peter Maydell
2020-03-26 22:49   ` Aleksandar Markovic
2020-03-25 19:18 ` [PATCH-for-5.0 10/12] hw/misc/macio/macio: " Philippe Mathieu-Daudé
2020-03-25 23:55   ` David Gibson
2020-03-26 21:50   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 11/12] hw/net/xilinx_axienet: " Philippe Mathieu-Daudé
2020-03-25 20:52   ` Alistair Francis
2020-03-26 21:51   ` Peter Maydell
2020-03-25 19:18 ` [PATCH-for-5.0 12/12] hw/riscv/sifive_u: " Philippe Mathieu-Daudé
2020-03-25 20:52   ` Alistair Francis
2020-03-26 21:55   ` Peter Maydell
2020-03-31 17:02     ` Philippe Mathieu-Daudé
2020-03-31 17:03       ` Peter Maydell
2020-03-25 19:20 ` [PATCH-for-5.0 00/12] hw: " Philippe Mathieu-Daudé
2020-03-30  9:21   ` Stefan Hajnoczi
2020-04-06 17:47     ` Philippe Mathieu-Daudé
2020-03-31 13:23 ` Markus Armbruster
2020-04-03 17:53   ` Philippe Mathieu-Daudé
2020-04-04  5:55     ` Markus Armbruster [this message]

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