{"id":2219007,"url":"http://patchwork.ozlabs.org/api/patches/2219007/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402095132.29245-11-thuth@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260402095132.29245-11-thuth@redhat.com>","list_archive_url":null,"date":"2026-04-02T09:51:32","name":"[10/10] docs/about/deprecated: Deprecate the qemu-system-i386 binary","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"7681abc487f3a1fbae4545c8c700c1b35ad2fff0","submitter":{"id":66152,"url":"http://patchwork.ozlabs.org/api/people/66152/?format=json","name":"Thomas Huth","email":"thuth@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402095132.29245-11-thuth@redhat.com/mbox/","series":[{"id":498459,"url":"http://patchwork.ozlabs.org/api/series/498459/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498459","date":"2026-04-02T09:51:22","name":"Deprecate the qemu-system-i386 binary","version":1,"mbox":"http://patchwork.ozlabs.org/series/498459/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219007/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219007/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=cNtWkpbM;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fmccM2Wd9z1yGJ\n\tfor ; Thu, 02 Apr 2026 20:53:23 +1100 (AEDT)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1w8Ej1-0007GD-5I; Thu, 02 Apr 2026 05:52:31 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from ) id 1w8Eiy-0007Dc-Ca\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 05:52:28 -0400","from us-smtp-delivery-124.mimecast.com ([170.10.133.124])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from ) id 1w8Eiw-0008Tg-Oq\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 05:52:28 -0400","from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com\n (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by\n relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n cipher=TLS_AES_256_GCM_SHA384) id us-mta-680-t3LmcyEeNnWluNdasNIvrQ-1; Thu,\n 02 Apr 2026 05:52:21 -0400","from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com\n (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS\n id B5B85180044D; Thu, 2 Apr 2026 09:52:20 +0000 (UTC)","from thuth-p1g4.redhat.com (unknown [10.44.34.44])\n by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP\n id 7C2F1196B088; Thu, 2 Apr 2026 09:52:16 +0000 (UTC)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1775123544;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=1XTWrPgq4sCwgSTOwpsTMMw/F62QUQmlEI3gOkYR/ZE=;\n b=cNtWkpbMxk3K45QhDHhC1ZtlohCsWYgVceKD8J2agfYqBvQtNPZGq+hK8sNn0/cw8Dg08U\n 09L8iTUHIeW7gautHFlctppnflRDvm7+XWyqWL4pILEyYHTEbTqPPBKyVgal0iCNjinTL7\n /yzaBCdPvvPulhtk0Tt/LhpSZ6miVt0=","X-MC-Unique":"t3LmcyEeNnWluNdasNIvrQ-1","X-Mimecast-MFC-AGG-ID":"t3LmcyEeNnWluNdasNIvrQ_1775123540","From":"Thomas Huth ","To":"Paolo Bonzini ,\n\tqemu-devel@nongnu.org","Cc":"Pierrick Bouvier ,\n \"Michael S. Tsirkin\" ,\n Richard Henderson , =?utf-8?q?Philippe_Mathie?=\n\t=?utf-8?q?u-Daud=C3=A9?= , Zhao Liu ,\n Thomas Huth ","Subject":"[PATCH 10/10] docs/about/deprecated: Deprecate the qemu-system-i386\n binary","Date":"Thu, 2 Apr 2026 11:51:32 +0200","Message-ID":"<20260402095132.29245-11-thuth@redhat.com>","In-Reply-To":"<20260402095132.29245-1-thuth@redhat.com>","References":"<20260402095132.29245-1-thuth@redhat.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","X-Scanned-By":"MIMEDefang 3.0 on 10.30.177.17","Received-SPF":"pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com","X-Spam_score_int":"-6","X-Spam_score":"-0.7","X-Spam_bar":"/","X-Spam_report":"(-0.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.01,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"From: Thomas Huth \n\nAside from not supporting KVM on 32-bit hosts, the qemu-system-x86_64\nbinary is a proper superset of the qemu-system-i386 binary. And with\nthe 32-bit x86 host support being removed now, it is possible to\ndeprecate the qemu-system-i386 binary now, too.\n\nWith regards to 32-bit KVM support in the x86 Linux kernel,\nthe developers confirmed that they do not need a recent\nqemu-system-i386 binary here:\n\n https://lore.kernel.org/kvm/Y%2ffkTs5ajFy0hP1U@google.com/\n\nReviewed-by: Philippe Mathieu-Daudé \nSigned-off-by: Thomas Huth \n---\n docs/about/deprecated.rst | 19 +++++++++++++++++++\n 1 file changed, 19 insertions(+)","diff":"diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst\nindex a6d6a713265..2de51337d75 100644\n--- a/docs/about/deprecated.rst\n+++ b/docs/about/deprecated.rst\n@@ -301,6 +301,25 @@ machine must ensure that they're setting the ``spike`` machine in the\n command line (``-M spike``).\n \n \n+System emulator binaries\n+------------------------\n+\n+``qemu-system-i386`` binary (since 11.1)\n+''''''''''''''''''''''''''''''''''''''''\n+\n+The ``qemu-system-i386`` binary was mainly useful for running with KVM\n+on 32-bit x86 hosts, but most Linux distributions already removed their\n+support for 32-bit x86 kernels, so hardly anybody still needs this. The\n+``qemu-system-x86_64`` binary is a proper superset and can be used to\n+run 32-bit guests by selecting a 32-bit CPU model, including KVM support\n+on x86_64 hosts. Thus users are recommended to reconfigure their systems\n+to use the ``qemu-system-x86_64`` binary instead. If a 32-bit CPU guest\n+environment should be enforced, you can switch off the \"long mode\" CPU\n+flag with ``-cpu max,lm=off``, or rename/symlink ``qemu-system-x86_64``\n+to ``qemu-system-i386`` -- QEMU will then run with the 64-bit extensions\n+disabled.\n+\n+\n Backend options\n ---------------\n \n","prefixes":["10/10"]}