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From: Juan Quintela <quintela@redhat.com>
To: Markus Armbruster <armbru@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>,
	Martin Schrodt <martin@schrodt.org>,
	qemu-devel@nongnu.org, Gerd Hoffmann <kraxel@redhat.com>,
	Max Reitz <mreitz@redhat.com>
Subject: Re: [Qemu-devel] Drop support for 32bit hosts in qemu?
Date: Wed, 27 Jun 2018 15:02:48 +0200	[thread overview]
Message-ID: <87fu18jsav.fsf@secure.laptop> (raw)
In-Reply-To: <87fu18ach6.fsf_-_@dusky.pond.sub.org> (Markus Armbruster's message of "Wed, 27 Jun 2018 09:57:09 +0200")

Markus Armbruster <armbru@redhat.com> wrote:
> Thomas Huth <thuth@redhat.com> writes:
>
>> On 27.06.2018 08:51, Gerd Hoffmann wrote:
> [...]
>>> Drop support for 32bit hosts in qemu?
>>
>> I guess the only way to answer that question reliably is to send a patch
>> to mark 32-bit hosts as deprecated...
>>
>> Anyway, you still have got to fix that problem with -m32 now somehow
>> since we certainly can not drop 32-bit immediately.
>
> We certainly can if we want to.
>
> Our formal deprecation policy codifies our compromise between the need
> to evolve QEMU and the need of its users for stable external interfaces.
>
> "Compiles on host X" is also a need, but it's a different one.
> Evidence: "Supported build platforms" has its own appendix, separate
> from "Deprecated features".  It's mum on 32-bit hosts.
>
> I'm not saying we *should* drop 32-bit hosts immediately.  Only that the
> feature deprecation policy does not apply.
>
> Is QEMU still useful on 32-bit hosts?  Honest question!

At least require 32bits architectures/compilers able to use 64bit
atomics.  That leaves us with x86 (depending on compiler).  And there
haven't been 32bit x86 hosts since .....

Later, Juan.

  parent reply	other threads:[~2018-06-27 12:59 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-25 13:12 [Qemu-devel] [PULL 0/6] Audio 20180625 patches Gerd Hoffmann
2018-06-25 13:12 ` [Qemu-devel] [PULL 1/6] audio/hda: create millisecond timers that handle IO Gerd Hoffmann
2018-06-26 19:55   ` Max Reitz
2018-06-27  6:51     ` Gerd Hoffmann
2018-06-27  7:24       ` Thomas Huth
2018-06-27  7:57         ` [Qemu-devel] Drop support for 32bit hosts in qemu? (was: [PULL 1/6] audio/hda: create millisecond timers that handle IO) Markus Armbruster
2018-06-27  8:09           ` [Qemu-devel] Drop support for 32bit hosts in qemu? Thomas Huth
2018-06-27  8:56             ` Gerd Hoffmann
2018-06-27 11:08             ` Alex Bennée
2018-06-27 11:09               ` Thomas Huth
2018-06-27  8:15           ` [Qemu-devel] Drop support for 32bit hosts in qemu? (was: [PULL 1/6] audio/hda: create millisecond timers that handle IO) BALATON Zoltan
2018-06-27  8:52             ` Gerd Hoffmann
2018-06-27  9:09               ` Thomas Huth
2018-06-27 13:33                 ` Philippe Mathieu-Daudé
2018-06-27 15:41                   ` Laurent Vivier
2018-06-27 18:44                     ` Dr. David Alan Gilbert
2018-06-27 19:55                       ` Laurent Vivier
2018-06-27 10:49               ` Peter Maydell
2018-06-27 11:09                 ` Dr. David Alan Gilbert
2018-06-27 13:08                   ` Alex Bennée
2018-06-27 13:09                     ` Alex Bennée
2018-06-27 11:09           ` Daniel P. Berrangé
2018-06-27 13:03             ` Alex Bennée
2018-06-27 13:38               ` Philippe Mathieu-Daudé
2018-06-27 13:02           ` Juan Quintela [this message]
2018-06-27 13:11             ` [Qemu-devel] Drop support for 32bit hosts in qemu? Daniel P. Berrangé
2018-06-27 11:13       ` [Qemu-devel] [PULL 1/6] audio/hda: create millisecond timers that handle IO Gerd Hoffmann
2018-06-27 13:15         ` Paolo Bonzini
2018-06-27 12:21       ` Eric Blake
2018-06-29  8:19   ` Peter Maydell
2018-06-29 15:11     ` Eric Blake
2018-06-25 13:12 ` [Qemu-devel] [PULL 2/6] audio/hda: turn some dprintfs into trace points Gerd Hoffmann
2018-06-25 13:12 ` [Qemu-devel] [PULL 3/6] audio/hda: tweak timer adjust logic Gerd Hoffmann
2018-06-25 13:12 ` [Qemu-devel] [PULL 4/6] audio/hda: detect output buffer overruns Gerd Hoffmann
2018-06-25 13:12 ` [Qemu-devel] [PULL 5/6] audio/hda: enable new timer code by default Gerd Hoffmann
2018-06-25 13:12 ` [Qemu-devel] [PULL 6/6] audio: Convert use of atoi to qemu_strtoi Gerd Hoffmann
2018-06-25 15:37 ` [Qemu-devel] [PULL 0/6] Audio 20180625 patches Peter Maydell

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