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From: Peter Maydell <peter.maydell@linaro.org>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: BALATON Zoltan <balaton@eik.bme.hu>,
	Martin Schrodt <martin@schrodt.org>,
	Thomas Huth <thuth@redhat.com>, Max Reitz <mreitz@redhat.com>,
	Markus Armbruster <armbru@redhat.com>,
	QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Drop support for 32bit hosts in qemu? (was: [PULL 1/6] audio/hda: create millisecond timers that handle IO)
Date: Wed, 27 Jun 2018 11:49:35 +0100	[thread overview]
Message-ID: <CAFEAcA-ZM-HS_BB4F3eS0VmPdXkaeDfTJ+R256BMujyt114mxw@mail.gmail.com> (raw)
In-Reply-To: <20180627085217.blrsx5lmu4sau4fd@sirius.home.kraxel.org>

On 27 June 2018 at 09:52, Gerd Hoffmann <kraxel@redhat.com> wrote:
>   Hi,
>
>> > Is QEMU still useful on 32-bit hosts?  Honest question!
>>
>> I guess it depends on what 32-bit hosts you consider. If you look at only
>> x86 vs. x86_64 then probably x86 is not that important any more but for some
>> embedded systems/SoCs 32bit might still be common and QEMU useful for those
>> (also as host not only emulated).

I would generally agree with this. For x86 32-bit is probably
droppable, but for non-x86 the situation is much less clear.

> Well.  I've used kvm with an 32bit arm soc (cubietruck).  It's very
> slow.  And all the arm architecture improvements to support kvm better
> are for aarch64 only.

Cubietruck (a Cortex-A7) is a pretty slow 32-bit Arm core.

Ask again in a couple of years :-)

thanks
-- PMM

  parent reply	other threads:[~2018-06-27 10:49 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 [this message]
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           ` [Qemu-devel] Drop support for 32bit hosts in qemu? Juan Quintela
2018-06-27 13:11             ` 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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