From: Markus Armbruster <armbru@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>,
Peter Maydell <peter.maydell@linaro.org>,
"Daniel P. Berrange" <berrange@redhat.com>,
Laurent Vivier <laurent@vivier.eu>,
Eduardo Habkost <ehabkost@redhat.com>
Subject: Re: [PATCH 09/24] macio: Fix to realize "mos6522-cuda" and "mos6522-pmu" devices
Date: Thu, 28 May 2020 08:57:28 +0200 [thread overview]
Message-ID: <87367kwnqf.fsf@dusky.pond.sub.org> (raw)
In-Reply-To: <d42145a1-2af7-a342-aaa7-d4f472c80e0b@redhat.com> (Paolo Bonzini's message of "Wed, 27 May 2020 17:12:15 +0200")
Paolo Bonzini <pbonzini@redhat.com> writes:
> On 27/05/20 17:05, Peter Maydell wrote:
>> I disagree with these. We're in a realize function, the API
>> says "on errors, report them via the Error* you got passed",
>> so we should do that, not blow up. &error_abort only makes
>> sense if (a) we have no better way to report errors than
>> to abort (which isn't the case here) or (b) if we can guarantee
>> that in fact the thing we're doing won't ever fail
>> (which we can't here without knowing more about the internal
>> implementation details of the MOS6522 device than we
>> really ought to).
>
> Note however that before replacing &error_abort with error propagation
> you need to make sure that you are "un-realizing" yourself properly. So
> it may be better to have inferior (but clearly visible) error
> propagation behavior, than untested (and perhaps untestable) buggy code
> that looks great on the surface.
This is exactly why I have to stop at &error_abort in this series. It's
24 patches of fixes to enable 50+ patches of refactoring, with more in
the pipeline. If I stray even deeper into the weeds, my pipeline is
going to explode %-}
next prev parent reply other threads:[~2020-05-28 6:58 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 5:03 [PATCH 00/24] Fixes around device realization Markus Armbruster
2020-05-18 5:03 ` [PATCH 01/24] arm/stm32f405: Fix realization of "stm32f2xx-adc" devices Markus Armbruster
2020-05-18 16:48 ` Alistair Francis
2020-05-19 5:08 ` Markus Armbruster
2020-05-19 22:20 ` Alistair Francis
2020-05-27 9:27 ` Markus Armbruster
2020-05-27 11:24 ` Philippe Mathieu-Daudé
2020-05-18 5:03 ` [PATCH 02/24] display/xlnx_dp: Fix to realize "i2c-ddc" and "aux-to-i2c-bridge" Markus Armbruster
2020-05-18 8:19 ` Fred Konrad
2020-05-19 5:09 ` Markus Armbruster
2020-05-19 9:48 ` Peter Maydell
2020-05-19 12:07 ` Markus Armbruster
2020-05-18 9:59 ` Edgar E. Iglesias
2020-05-18 10:30 ` Peter Maydell
2020-05-18 11:13 ` Philippe Mathieu-Daudé
2020-05-19 5:13 ` Markus Armbruster
2020-05-18 16:56 ` Alistair Francis
2020-05-18 5:03 ` [PATCH 03/24] sd/pxa2xx_mmci: Fix to realize "pxa2xx-mmci" device Markus Armbruster
2020-05-21 16:20 ` Peter Maydell
2020-05-18 5:03 ` [PATCH 04/24] aspeed: Don't create unwanted "ftgmac100", "aspeed-mmi" devices Markus Armbruster
2020-05-18 12:19 ` Cédric Le Goater
2020-05-19 0:20 ` Andrew Jeffery
2020-05-19 5:45 ` Markus Armbruster
2020-05-19 11:42 ` Philippe Mathieu-Daudé
2020-05-19 12:44 ` Cédric Le Goater
2020-05-19 0:38 ` Joel Stanley
2020-05-19 5:35 ` Markus Armbruster
2020-05-18 5:03 ` [PATCH 05/24] aspeed: Don't create unwanted "cortex-a7-arm-cpu" devices Markus Armbruster
2020-05-18 12:24 ` Cédric Le Goater
2020-05-19 0:40 ` Joel Stanley
2020-05-19 5:46 ` Markus Armbruster
2020-05-19 9:35 ` Cédric Le Goater
2020-05-18 5:03 ` [PATCH 06/24] armv7m: Bury unwanted "ARM,bitband-memory" devices Markus Armbruster
2020-05-21 16:17 ` Peter Maydell
2020-05-25 5:50 ` Markus Armbruster
2020-05-25 12:32 ` Paolo Bonzini
2020-05-25 12:49 ` Peter Maydell
2020-05-26 5:19 ` Markus Armbruster
2020-05-18 5:03 ` [PATCH 07/24] auxbus: Fix aux-to-i2c-bridge to be a subtype of aux-slave Markus Armbruster
2020-05-18 8:53 ` Philippe Mathieu-Daudé
2020-05-18 5:03 ` [PATCH 08/24] mac_via: Fix to realize "mos6522-q800-via*" devices Markus Armbruster
2020-05-18 20:25 ` Mark Cave-Ayland
2020-05-18 5:03 ` [PATCH 09/24] macio: Fix to realize "mos6522-cuda" and "mos6522-pmu" devices Markus Armbruster
2020-05-21 16:26 ` Peter Maydell
2020-05-25 6:25 ` Markus Armbruster
2020-05-27 14:12 ` Markus Armbruster
2020-05-27 15:05 ` Peter Maydell
2020-05-27 15:12 ` Paolo Bonzini
2020-05-28 6:57 ` Markus Armbruster [this message]
2020-05-27 16:08 ` Markus Armbruster
2020-05-18 5:03 ` [PATCH 10/24] macio: Bury unwanted "macio-gpio" devices Markus Armbruster
2020-05-18 20:35 ` Mark Cave-Ayland
2020-05-19 6:06 ` Markus Armbruster
2020-05-18 5:03 ` [PATCH 11/24] pnv/phb4: Bury unwanted "pnv-phb4-pec-stack" devices Markus Armbruster
2020-05-18 8:49 ` Greg Kurz
2020-05-18 13:24 ` Cédric Le Goater
2020-05-19 8:16 ` Cédric Le Goater
2020-05-19 11:50 ` Markus Armbruster
2020-05-18 5:03 ` [PATCH 12/24] MAINTAINERS: Make section PowerNV cover pci-host/pnv* as well Markus Armbruster
2020-05-18 6:41 ` David Gibson
2020-05-18 5:03 ` [PATCH 13/24] ppc4xx: Drop redundant device realization Markus Armbruster
2020-05-18 8:54 ` Philippe Mathieu-Daudé
2020-05-18 10:27 ` BALATON Zoltan
2020-05-19 6:07 ` Markus Armbruster
2020-05-18 16:41 ` Thomas Huth
2020-05-18 5:03 ` [PATCH 14/24] macio: Put "macio-nvram" device on the macio bus Markus Armbruster
2020-05-18 20:37 ` Mark Cave-Ayland
2020-05-18 5:03 ` [PATCH 15/24] macio: Fix macio-bus to be a subtype of System bus Markus Armbruster
2020-05-18 8:55 ` Philippe Mathieu-Daudé
2020-05-18 20:39 ` Mark Cave-Ayland
2020-05-19 6:09 ` Markus Armbruster
2020-05-18 5:04 ` [PATCH 16/24] ppc/pnv: Put "*-pnv-chip" and "pnv-xive" on the main system bus Markus Armbruster
2020-05-18 16:34 ` Cédric Le Goater
2020-05-19 6:28 ` Markus Armbruster
2020-05-19 13:05 ` Cédric Le Goater
2020-05-18 5:04 ` [PATCH 17/24] pnv/psi: Correct the pnv-psi* devices not to be sysbus devices Markus Armbruster
2020-05-18 16:27 ` Cédric Le Goater
2020-05-19 6:30 ` Markus Armbruster
2020-05-19 13:04 ` Cédric Le Goater
2020-05-18 5:04 ` [PATCH 18/24] display/sm501 display/ati: Fix to realize "i2c-ddc" Markus Armbruster
2020-05-18 10:32 ` BALATON Zoltan
2020-05-19 6:30 ` Markus Armbruster
2020-05-18 10:39 ` BALATON Zoltan
2020-05-18 10:45 ` Philippe Mathieu-Daudé
2020-05-19 6:35 ` Markus Armbruster
2020-05-18 5:04 ` [PATCH 19/24] riscv: Fix to put "riscv.hart_array" devices on sysbus Markus Armbruster
2020-05-18 17:03 ` Alistair Francis
2020-05-18 5:04 ` [PATCH 20/24] riscv: Fix type of SiFive[EU]SocState, member parent_obj Markus Armbruster
2020-05-18 8:58 ` Philippe Mathieu-Daudé
2020-05-18 16:57 ` Alistair Francis
2020-05-18 5:04 ` [PATCH 21/24] sparc/leon3: Fix to put grlib,* devices on sysbus Markus Armbruster
2020-05-18 8:09 ` Fred Konrad
2020-05-18 8:59 ` Philippe Mathieu-Daudé
2020-05-18 5:04 ` [PATCH 22/24] qdev: Assert devices are plugged into a bus that can take them Markus Armbruster
2020-05-18 15:03 ` Markus Armbruster
2020-05-18 20:42 ` Mark Cave-Ayland
2020-05-18 5:04 ` [PATCH 23/24] sd: Hide the qdev-but-not-quite thing created by sd_init() Markus Armbruster
2020-05-18 5:04 ` [PATCH 24/24] qdev: Assert onboard devices all get realized properly Markus Armbruster
2020-05-18 9:10 ` Philippe Mathieu-Daudé
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