From nobody Fri May 10 20:29:26 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 170.10.129.124 as permitted sender) client-ip=170.10.129.124; envelope-from=libvir-list-bounces@redhat.com; helo=us-smtp-delivery-124.mimecast.com; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1677496289; cv=none; d=zohomail.com; s=zohoarc; b=EsUiY598vgEmbEIRjlvKlbO64wHDf9/gnzQn4Jle2AOPtCJ/J0nGmg7A22d7HjImNNBdc4KUYjJBJLysK536mxJaNYZAGk3/fUFWuwHjFXi4w+S4yVFKu3PuLwvsxSfPE01Al/r5iKNvVdaUU+AiHyKUEwXcMfif5djDa37wDlI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1677496289; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=wU7XSs59OHmkrBANt2Ig03ayelNixYK5a46ZpJhqPYA=; b=kZvbc8omIltiIDe7mF/VSYMpN0BRvwFBCNnNvHcKhJ5WzOv59j9gYdkpM0kLoYw1X44GPz748a0/a9qO1KTSe14ACN8/cnXSyAkIKUoQzAGEEj7vuCjolRxW7AK+cieAyZgCULVFqDOq6euenlJg7LTPO/n6qjycWKJksAMTTlg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mx.zohomail.com with SMTPS id 1677496289116434.0658694213198; Mon, 27 Feb 2023 03:11:29 -0800 (PST) Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-73-t89Rta3fOh-drbLmP9IcNA-1; Mon, 27 Feb 2023 06:11:26 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D56C885CBE5; Mon, 27 Feb 2023 11:11:22 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (unknown [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id F0B27140EBF6; Mon, 27 Feb 2023 11:11:21 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (localhost [IPv6:::1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id CE2391946589; Mon, 27 Feb 2023 11:11:21 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 773871946586 for ; Mon, 27 Feb 2023 11:10:57 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id E532F40C945A; Mon, 27 Feb 2023 11:10:57 +0000 (UTC) Received: from thuth.com (unknown [10.45.227.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7FFFB40C6EC4; Mon, 27 Feb 2023 11:10:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677496288; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=wU7XSs59OHmkrBANt2Ig03ayelNixYK5a46ZpJhqPYA=; b=ANVfU+Q74NPdoWAKLDyLi4UGfmhLNEa1hKI4CfzZU4nlT5K7VGzvZws9qE42+SghuHpSwa KFiX1VageElsXOaaJXgXs7SyRJqrFGmSKM0U/K1MoFwHUlrIPDH85WzIp2zZk2bJIryBPc bG5KdLZpoGL4ryUdZBEOnZwIwj3tC84= X-MC-Unique: t89Rta3fOh-drbLmP9IcNA-1 X-Original-To: libvir-list@listman.corp.redhat.com From: Thomas Huth To: qemu-devel@nongnu.org, Peter Maydell , Daniel Berrange , Paolo Bonzini Subject: [PATCH 1/2] docs/about: Deprecate 32-bit x86 hosts and qemu-system-i386 Date: Mon, 27 Feb 2023 12:10:49 +0100 Message-Id: <20230227111050.54083-2-thuth@redhat.com> In-Reply-To: <20230227111050.54083-1-thuth@redhat.com> References: <20230227111050.54083-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Michael S . Tsirkin" , libvir-list@redhat.com, Richard Henderson , Markus Armbruster , Maxim Levitsky , qemu-arm@nongnu.org, Reinoud Zandijk , Marcel Apfelbaum , xen-devel@lists.xenproject.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: libvir-list-bounces@redhat.com Sender: "libvir-list" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1677496289459100001 Content-Type: text/plain; charset="utf-8"; x-default="true" Hardly anybody still uses 32-bit x86 hosts today, so we should start deprecating them to finally have less test efforts. With regards to 32-bit KVM support in the x86 Linux kernel, the developers confirmed that they do not need a recent qemu-system-i386 binary here: https://lore.kernel.org/kvm/Y%2ffkTs5ajFy0hP1U@google.com/ Signed-off-by: Thomas Huth --- docs/about/deprecated.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 15084f7bea..98517f5187 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -196,6 +196,19 @@ CI coverage support may bitrot away before the depreca= tion process completes. The little endian variants of MIPS (both 32 and 64 bit) are still a supported host architecture. =20 +32-bit x86 hosts and ``qemu-system-i386`` (since 8.0) +''''''''''''''''''''''''''''''''''''''''''''''''''''' + +Testing 32-bit x86 host OS support takes a lot of precious time during the +QEMU contiguous integration tests, and considering that most OS vendors +stopped shipping 32-bit variants of their x86 OS distributions and most +x86 hardware from the past >10 years is capable of 64-bit, keeping the +32-bit support alive is an inadequate burden for the QEMU project. Thus +QEMU will soon drop the support for 32-bit x86 host systems and the +``qemu-system-i386`` binary. Use ``qemu-system-x86_64`` (which is a proper +superset of ``qemu-system-i386``) on a 64-bit host machine instead. + + QEMU API (QAPI) events ---------------------- =20 --=20 2.31.1 From nobody Fri May 10 20:29:26 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1677496277; cv=none; d=zohomail.com; s=zohoarc; b=k72IYyE2+cOxwtQ0o1qCDLsvuy0SU8vOkYZ3w0fu7WQ27EEdAlTGZdXNTXGE5Cb4CibzE77ZcbVl3iRTiBY4SarWYTnycsv7JJ/GP+E3TRoNNKdORV4aOWuUzWR/JwclPl+nnMj0NG5IhKfm0mz9hQLOY3lJ3oPQH4ZIpnZk5cU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1677496277; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=KioUJTM1KSsfU9iQtLnRn1SvfePLH+pSeG29+t/WJ4c=; b=D5cR6VAilvom3qHhjuUFCD09OElX5XC2PRlfpAYNu31hzbkmdWgRvr4o5Z10PNUpkUTX8ebls0ttcPjWQjJcIq3HT32rJBGBZmRJXPT/49cBLoTwLuVaujaRCDDw+znAI4sCyAE1iWeo06BKlLqLo5XLWLeOE0h/UNDwCJkL7wo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1677496277626577.7967572403381; Mon, 27 Feb 2023 03:11:17 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pWbPR-0001Wv-KD; Mon, 27 Feb 2023 06:11:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pWbPO-0001U7-Rp for qemu-devel@nongnu.org; Mon, 27 Feb 2023 06:11:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pWbPN-0000oO-5h for qemu-devel@nongnu.org; Mon, 27 Feb 2023 06:11:06 -0500 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-74-DJ-jRS76Mjy4jXphQxQ3Uw-1; Mon, 27 Feb 2023 06:11:01 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 996A7101A521; Mon, 27 Feb 2023 11:11:00 +0000 (UTC) Received: from thuth.com (unknown [10.45.227.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 348B440C6EC4; Mon, 27 Feb 2023 11:10:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677496264; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KioUJTM1KSsfU9iQtLnRn1SvfePLH+pSeG29+t/WJ4c=; b=foGPiIr6kX+diJGlxiVLlXqr+CVhEjSZywLo57EbubDu1CkSavZz034YU81YT9aiLEcuSm MoGg55Di95uZLtfIieoIPeLlvGe/5JumY1lych27hrvUcUdIZrx4yn/qxHTWTcTuRpDXY4 uVAwJQkgHhfvXU4JS4dUfREfdEMCraY= X-MC-Unique: DJ-jRS76Mjy4jXphQxQ3Uw-1 From: Thomas Huth To: qemu-devel@nongnu.org, Peter Maydell , Daniel Berrange , Paolo Bonzini Cc: Markus Armbruster , =?UTF-8?q?Alex=20Benn=C3=A9e?= , qemu-arm@nongnu.org, Maxim Levitsky , libvir-list@redhat.com, Richard Henderson , xen-devel@lists.xenproject.org, Reinoud Zandijk , "Michael S . Tsirkin" , Marcel Apfelbaum Subject: [PATCH 2/2] docs/about: Deprecate 32-bit arm hosts and qemu-system-arm Date: Mon, 27 Feb 2023 12:10:50 +0100 Message-Id: <20230227111050.54083-3-thuth@redhat.com> In-Reply-To: <20230227111050.54083-1-thuth@redhat.com> References: <20230227111050.54083-1-thuth@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1677496279655100006 Content-Type: text/plain; charset="utf-8" qemu-system-aarch64 is a proper superset of qemu-system-arm, and the latter was mainly still required for 32-bit KVM support. But this 32-bit KVM arm support has been dropped in the Linux kernel a couple of years ago already,so we don't really need qemu-system-arm anymore, thus deprecated it now. Additionally, it's quite unlikely that anybody is still running full system emulation on a 32-bit arm host nowadays. All recent strong arm host machines should support 64-bit now, so we also deprecate the 32-bit hosts here to finally save some precious minutes in our CI. Signed-off-by: Thomas Huth --- docs/about/deprecated.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 98517f5187..a52e45b570 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -208,6 +208,23 @@ QEMU will soon drop the support for 32-bit x86 host sy= stems and the ``qemu-system-i386`` binary. Use ``qemu-system-x86_64`` (which is a proper superset of ``qemu-system-i386``) on a 64-bit host machine instead. =20 +System emulation on 32-bit arm hosts and ``qemu-system-arm`` (since 8.0) +'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +``qemu-system-aarch64`` is a proper superset of ``qemu-system-arm``. The +latter was mainly a requirement for running KVM on 32-bit arm hosts, but +this 32-bit KVM support has been removed some years ago already (see: +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/= ?id=3D541ad0150ca4 +). Thus the QEMU project will drop the ``qemu-system-arm`` binary in a +future release -- use ``qemu-system-aarch64`` instead. + +Since you need a strong host machine for running full system emulation, +and all recent strong hosts support 64-bit anyway, the QEMU project +also deprecates the support for running any system emulation on 32-bit +arm hosts in general. Use 64-bit arm hosts for system emulation instead. +(Note: "user" mode emulation continuous to be supported on 32-bit arm +hosts, too) + =20 QEMU API (QAPI) events ---------------------- --=20 2.31.1