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From: Peter Maydell <peter.maydell@linaro.org>
To: Markus Armbruster <armbru@redhat.com>
Cc: "Eduardo Habkost" <ehabkost@redhat.com>,
	"Sergio Lopez" <slp@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"QEMU Developers" <qemu-devel@nongnu.org>,
	"Gerd Hoffmann" <kraxel@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: Re: [PATCH v2 2/3] hw/usb/hcd-xhci-pci: Abort if setting link property failed
Date: Tue, 24 Aug 2021 13:16:40 +0100	[thread overview]
Message-ID: <CAFEAcA9_HGCVYX8smuAWhUDJ8NbfQ76XgJjOLd2EoyiS2gKC0A@mail.gmail.com> (raw)
In-Reply-To: <87tujfdp4c.fsf@dusky.pond.sub.org>

On Tue, 24 Aug 2021 at 13:05, Markus Armbruster <armbru@redhat.com> wrote:
> When you know that all callers handle errors like &error_fatal does, use
> of &error_fatal doesn't produce wrong behavior.  It's still kind of
> wrong, because relying on such a non-local argument without a genuine
> need is.

Not using error_fatal results in quite a bit of extra boilerplate
for all those extra explicit "check for failure, print the error
message and exit" points. If the MachineState init function took
an Error** that might be a mild encouragement to "pass an Error
upward rather than exiting"; but it doesn't.

Right now we have nearly a thousand instances of error_fatal
in the codebase, incidentally.

-- PMM


  reply	other threads:[~2021-08-24 12:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19 17:15 [PATCH v2 0/3] hw/usb: Always expect 'dma' link property to be set to simplify Philippe Mathieu-Daudé
2021-08-19 17:15 ` [PATCH v2 1/3] hw/pci: Introduce pci_dma_memory_region() helper Philippe Mathieu-Daudé
2021-08-19 17:15 ` [PATCH v2 2/3] hw/usb/hcd-xhci-pci: Abort if setting link property failed Philippe Mathieu-Daudé
2021-08-23 18:34   ` Eduardo Habkost
2021-08-24  8:13     ` Markus Armbruster
2021-08-24  8:35       ` Philippe Mathieu-Daudé
2021-08-24  8:46         ` Philippe Mathieu-Daudé
2021-08-24  9:19       ` Peter Maydell
2021-08-24 12:05         ` Markus Armbruster
2021-08-24 12:16           ` Peter Maydell [this message]
2021-08-24 13:57             ` Eduardo Habkost
2021-08-24 14:24               ` Peter Maydell
2021-08-24 14:29               ` Markus Armbruster
2021-08-24 14:27             ` Markus Armbruster
2021-08-24 14:30               ` Peter Maydell
2021-08-24 15:15                 ` Markus Armbruster
2021-08-24 15:19                   ` Peter Maydell
2021-08-25  7:48                     ` Markus Armbruster
2021-08-19 17:15 ` [PATCH v2 3/3] hw/usb/xhci: Always expect 'dma' link property to be set Philippe Mathieu-Daudé

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