All of lore.kernel.org
 help / color / mirror / Atom feed
From: Thomas Huth <thuth@redhat.com>
To: "John Paul Adrian Glaubitz" <glaubitz@physik.fu-berlin.de>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	qemu-devel@nongnu.org, "Peter Maydell" <peter.maydell@linaro.org>,
	"Daniel Berrange" <berrange@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>
Cc: "Markus Armbruster" <armbru@redhat.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	qemu-arm@nongnu.org, "Maxim Levitsky" <mlevitsk@redhat.com>,
	libvir-list@redhat.com,
	"Richard Henderson" <richard.henderson@linaro.org>,
	xen-devel@lists.xenproject.org,
	"Reinoud Zandijk" <reinoud@netbsd.org>,
	"Michael Tokarev" <mjt@tls.msk.ru>,
	"Helge Deller" <deller@gmx.de>,
	"Laurent Vivier" <lvivier@redhat.com>
Subject: Re: [PATCH v2 0/6] Deprecate support for 32-bit x86 and arm hosts
Date: Fri, 3 Mar 2023 12:22:12 +0100	[thread overview]
Message-ID: <2c7f837f-c156-8525-005f-f47d50591a85@redhat.com> (raw)
In-Reply-To: <89fd1c916b6c8094ea1a7a52396b3f91025c75c1.camel@physik.fu-berlin.de>

On 03/03/2023 12.09, John Paul Adrian Glaubitz wrote:
> Hello!
> 
> On Fri, 2023-03-03 at 10:48 +0100, Thomas Huth wrote:
>> x86 ==> deprecate both, user and system emulation support on
>>           32-bit hosts
>> arm ==> deprecate only system emulation on 32-bit hosts.
> 
> I would recommend against dropping support for 32-bit hosts for qemu-user
> as there are some cases where the emulation of 32-bit user code on 64-bit
> hosts does not work properly [1].
> 
> Adrian
> 
>> [1] https://sourceware.org/bugzilla/show_bug.cgi?id=23960

The ticket is very long and hard to read, but ... oh my, does that mean you 
need to compile qemu-user in 32-bit mode on a 64-bit x86 host to properly 
run 32-bit binaries from other architectures? ... uh, that's ugly ... and 
sounds like bug in QEMU's user mode emulation ... and what if you're running 
a distro (or different 64-bit host architecutre) that does not support 
32-bit userspace libraries anymore? Then you're lost?

  Thomas



  reply	other threads:[~2023-03-03 11:22 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-02 16:31 [PATCH v2 0/6] Deprecate support for 32-bit x86 and arm hosts Thomas Huth
2023-03-02 16:31 ` [PATCH v2 1/6] docs/about/deprecated: Deprecate the qemu-system-i386 binary Thomas Huth
2023-03-02 18:05   ` Daniel P. Berrangé
2023-03-03  0:49     ` Wilfred Mallawa
2023-03-02 16:31 ` [PATCH v2 2/6] docs/about/deprecated: Deprecate 32-bit x86 hosts Thomas Huth
2023-03-02 18:05   ` Daniel P. Berrangé
2023-03-03  0:52   ` Wilfred Mallawa
2023-03-02 16:31 ` [PATCH v2 3/6] gitlab-ci.d/crossbuilds: Drop the i386 jobs Thomas Huth
2023-03-02 18:07   ` Daniel P. Berrangé
2023-03-03  0:53   ` Wilfred Mallawa
2023-03-02 16:31 ` [PATCH v2 4/6] docs/about/deprecated: Deprecate the qemu-system-arm binary Thomas Huth
2023-03-02 18:07   ` Daniel P. Berrangé
2023-03-02 22:16   ` Philippe Mathieu-Daudé
2023-03-03  7:36     ` Thomas Huth
2023-03-03  0:55   ` Wilfred Mallawa
2023-03-03 11:16   ` Peter Maydell
2023-03-03 11:31     ` Thomas Huth
2023-03-03 11:39       ` Daniel P. Berrangé
2023-03-02 16:31 ` [PATCH v2 5/6] docs/about/deprecated: Deprecate 32-bit arm hosts Thomas Huth
2023-03-02 18:09   ` Daniel P. Berrangé
2023-03-03  0:57   ` Wilfred Mallawa
2023-03-02 16:31 ` [PATCH v2 6/6] gitlab-ci.d/crossbuilds: Drop the 32-bit arm system emulation jobs Thomas Huth
2023-03-02 18:10   ` Daniel P. Berrangé
2023-03-02 21:58   ` Philippe Mathieu-Daudé
2023-03-03  0:57   ` Wilfred Mallawa
2023-03-02 22:07 ` [PATCH v2 0/6] Deprecate support for 32-bit x86 and arm hosts Philippe Mathieu-Daudé
2023-03-03  9:48   ` Thomas Huth
2023-03-03 11:09     ` John Paul Adrian Glaubitz
2023-03-03 11:22       ` Thomas Huth [this message]
2023-03-03 11:57         ` John Paul Adrian Glaubitz
2023-03-03 11:24       ` Peter Maydell

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2c7f837f-c156-8525-005f-f47d50591a85@redhat.com \
    --to=thuth@redhat.com \
    --cc=alex.bennee@linaro.org \
    --cc=armbru@redhat.com \
    --cc=berrange@redhat.com \
    --cc=deller@gmx.de \
    --cc=glaubitz@physik.fu-berlin.de \
    --cc=libvir-list@redhat.com \
    --cc=lvivier@redhat.com \
    --cc=mjt@tls.msk.ru \
    --cc=mlevitsk@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=peter.maydell@linaro.org \
    --cc=philmd@linaro.org \
    --cc=qemu-arm@nongnu.org \
    --cc=qemu-devel@nongnu.org \
    --cc=reinoud@netbsd.org \
    --cc=richard.henderson@linaro.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.