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s=mimecast20190719; t=1678092433; 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=sHwLHNH3FPXXpeNzRTV2uFlinD5O4VAUvDUShaonn/I=; b=ZfY2z3tPQDDvagTe3l0rMb9kuyzoNotU2j+ouBM8vZk3Yc1X289fjuynJQlOPr2Jf+u1b1 bTiZgzuHuJITI7Hp6KakZI3R79gA3BWILBbWpibdqwE+7r382OP9uVB8MZrlKXs4JA2vbi Jrexi/e8De5aJagGjN3RJ2nzcJLQI4U= X-MC-Unique: oNa827YsNu2Wk8Y-6k0icg-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 v4 1/5] docs/about/deprecated: Deprecate 32-bit x86 hosts for system emulation Date: Mon, 6 Mar 2023 09:46:54 +0100 Message-Id: <20230306084658.29709-2-thuth@redhat.com> In-Reply-To: <20230306084658.29709-1-thuth@redhat.com> References: <20230306084658.29709-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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: libvir-list@redhat.com, Richard Henderson , Markus Armbruster , Maxim Levitsky , Wilfred Mallawa , qemu-arm@nongnu.org, Reinoud Zandijk , John Paul Adrian Glaubitz , 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 10.11.54.2 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678092436224100004 Hardly anybody still uses 32-bit x86 hosts today, so we should start deprecating them to stop wasting our time and CI minutes here. For example, there are also still some unresolved problems with these: When emulating 64-bit binaries in user mode, TCG does not honor atomicity for 64-bit accesses, which is "perhaps worse than not working at all" (quoting Richard). Let's simply make it clear that people should use 64-bit x86 hosts nowadays and we do not intend to fix/maintain the old 32-bit stuff. Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Wilfred Mallawa Signed-off-by: Thomas Huth --- docs/about/deprecated.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 15084f7bea..1ca9dc33d6 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -196,6 +196,17 @@ 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 +System emulation on 32-bit x86 hosts (since 8.0) +'''''''''''''''''''''''''''''''''''''''''''''''' + +Support for 32-bit x86 host deployments is increasingly uncommon in mainst= ream +OS distributions given the widespread availability of 64-bit x86 hardware. +The QEMU project no longer considers 32-bit x86 support for system emulati= on to +be an effective use of its limited resources, and thus intends to disconti= nue +it. Since all recent x86 hardware from the past >10 years is capable of the +64-bit x86 extensions, a corresponding 64-bit OS should be used instead. + + QEMU API (QAPI) events ---------------------- =20 --=20 2.31.1 From nobody Tue Apr 30 05:57:39 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=1678092435; cv=none; d=zohomail.com; s=zohoarc; b=ZA/WrBig4VhjKxiKTRlivYne2JcUuGkBcMjjwgR57U6zBf6wFsWlumbGtwLLbLq4oZrUC1EZ+d3l7uTvOh06/Yxpgg1TRiQgutNyrd+B/k82/PsRjaoI1jK1lPP5tERgiLTNo72P2vQXI7gB6STthq/WdtGB881bB2fUBPxTl3g= ARC-Message-Signature: i=1; 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Mon, 6 Mar 2023 08:47:08 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id AC35A175AD; Mon, 6 Mar 2023 08:47:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678092434; 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=37MyqIGrJ8NDqQYDY+IFgkqLJhkh+Oz/+/sGdhCxVu4=; b=eAA6po5VprUJaRkXp8hn9SsJ1ru7FQST0qBQDJJ1te4Zfdb4hXSdqTHo9dXKa/uRjRZQMV v2n4UyAB9QuovCBUYLXBCyScIHZLG45crnPskwm+uLMjEgpNwc8L+khF+ZbfXupcKIT7P2 V/fsDPjMSLzwbxNxCzRRyebjlUuxNgo= X-MC-Unique: j3bZMeawNLmNLsiTr4bWeA-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 v4 2/5] docs/about/deprecated: Deprecate the qemu-system-i386 binary Date: Mon, 6 Mar 2023 09:46:55 +0100 Message-Id: <20230306084658.29709-3-thuth@redhat.com> In-Reply-To: <20230306084658.29709-1-thuth@redhat.com> References: <20230306084658.29709-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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: libvir-list@redhat.com, Richard Henderson , Markus Armbruster , Maxim Levitsky , Wilfred Mallawa , qemu-arm@nongnu.org, Reinoud Zandijk , John Paul Adrian Glaubitz , 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678092436223100003 Aside from not supporting KVM on 32-bit hosts, the qemu-system-x86_64 binary is a proper superset of the qemu-system-i386 binary. With the 32-bit host support being deprecated, it is now also possible to deprecate the qemu-system-i386 binary. 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/ Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Wilfred Mallawa Signed-off-by: Thomas Huth --- docs/about/deprecated.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 1ca9dc33d6..c4fcc6b33c 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -34,6 +34,20 @@ deprecating the build option and no longer defend it in = CI. The ``--enable-gcov`` build option remains for analysis test case coverage. =20 +``qemu-system-i386`` binary (since 8.0) +''''''''''''''''''''''''''''''''''''''' + +The ``qemu-system-i386`` binary was mainly useful for running with KVM +on 32-bit x86 hosts, but most Linux distributions already removed their +support for 32-bit x86 kernels, so hardly anybody still needs this. The +``qemu-system-x86_64`` binary is a proper superset and can be used to +run 32-bit guests by selecting a 32-bit CPU model, including KVM support +on x86_64 hosts. Thus users are recommended to reconfigure their systems +to use the ``qemu-system-x86_64`` binary instead. If a 32-bit CPU guest +environment should be enforced, you can switch off the "long mode" CPU +flag, e.g. with ``-cpu max,lm=3Doff``. + + System emulator command line arguments -------------------------------------- =20 --=20 2.31.1 From nobody Tue Apr 30 05:57:39 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) client-ip=170.10.133.124; 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 170.10.133.124 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=1678092440; cv=none; d=zohomail.com; s=zohoarc; b=XCDo9DLsoQ1L4lCJKXrniJp5hHOKTbwkq7Cj12ClmLAIgm9zR+yLfARDTvNTSdanUCp3D8ocNHXPUkZ/d3BshGq49XYTaY3MytVFQMSLF0WLI6KJ/blv5n5GfsD5oUckZ7jKp4JJOYoPmkLfL7pyLC6WH/uqT/x6Q5UCdNefU74= ARC-Message-Signature: i=1; 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Mon, 6 Mar 2023 08:47:10 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id 46752175AD; Mon, 6 Mar 2023 08:47:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678092439; 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=oOdHjT9I3a98EaTtzARQkAnvMgS9UeiFJMCcEWuHsDg=; b=fZtDMLwRwCNzidmPZvAHe1GMxya/8K0yxWAvlx5WxFUgMAGvb15+8U7nxZ0n0OOq2B2aXm AnbbyXkAg62zIAHqyMSEmXmwiRfk7RJ32g4SxzT0v0l9gkkOddBCuNLyyZ4cv9ew6gsfBQ ngociX+X2ykmDZJPO1U/gYEnuExzkis= X-MC-Unique: IobY0-32OqG-qT4VZa_qFg-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 v4 3/5] gitlab-ci.d/crossbuilds: Drop the i386 system emulation job Date: Mon, 6 Mar 2023 09:46:56 +0100 Message-Id: <20230306084658.29709-4-thuth@redhat.com> In-Reply-To: <20230306084658.29709-1-thuth@redhat.com> References: <20230306084658.29709-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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: libvir-list@redhat.com, Richard Henderson , Markus Armbruster , Maxim Levitsky , Wilfred Mallawa , qemu-arm@nongnu.org, Reinoud Zandijk , John Paul Adrian Glaubitz , 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 10.11.54.2 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678092442282100001 Hardly anybody still uses 32-bit x86 environments for running QEMU with full system emulation, so let's stop wasting our scarce CI minutes with this job. (There are still the 32-bit MinGW and TCI jobs around for having some compile test coverage on 32-bit) Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Wilfred Mallawa Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- .gitlab-ci.d/crossbuilds.yml | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/.gitlab-ci.d/crossbuilds.yml b/.gitlab-ci.d/crossbuilds.yml index d3a31a2112..a25cb87ae4 100644 --- a/.gitlab-ci.d/crossbuilds.yml +++ b/.gitlab-ci.d/crossbuilds.yml @@ -43,16 +43,6 @@ cross-arm64-user: variables: IMAGE: debian-arm64-cross =20 -cross-i386-system: - extends: - - .cross_system_build_job - - .cross_test_artifacts - needs: - job: i386-fedora-cross-container - variables: - IMAGE: fedora-i386-cross - MAKE_CHECK_ARGS: check-qtest - cross-i386-user: extends: - .cross_user_build_job --=20 2.31.1 From nobody Tue Apr 30 05:57:39 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) client-ip=170.10.133.124; envelope-from=libvir-list-bounces@redhat.com; helo=us-smtp-delivery-124.mimecast.com; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678092487315100001 For running QEMU in system emulation mode, the user needs a rather strong host system, i.e. not only an embedded low-frequency controller. All recent beefy arm host machines should support 64-bit now, it's unlikely that anybody is still seriously using QEMU on a 32-bit arm CPU, so we deprecate the 32-bit arm hosts here to finally save use some time and precious CI minutes. Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Wilfred Mallawa Signed-off-by: Thomas Huth Acked-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- docs/about/deprecated.rst | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index c4fcc6b33c..f0de517dc2 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -220,6 +220,15 @@ be an effective use of its limited resources, and thus= intends to discontinue it. Since all recent x86 hardware from the past >10 years is capable of the 64-bit x86 extensions, a corresponding 64-bit OS should be used instead. =20 +System emulation on 32-bit arm hosts (since 8.0) +'''''''''''''''''''''''''''''''''''''''''''''''' + +Since QEMU needs a strong host machine for running full system emulation, = and +all recent powerful arm hosts support 64-bit, the QEMU project deprecates = the +support for running any system emulation on 32-bit arm hosts in general. U= se +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 From nobody Tue Apr 30 05:57:39 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) client-ip=170.10.133.124; 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 170.10.133.124 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=1678092442; cv=none; d=zohomail.com; s=zohoarc; b=knq8baL9Qe6mEe4zNJchGloY8f7LSsr8jxCiScCgu/4VVb/mFTq0IDf8LppyZ9lhH5xVbv+VfBva7tS7o74N7/P1zthmO4zNrJzcEl0x03pku+cNuG7jfeOlW7G7ovyw9B4OwH7chTEcQe764Xpx/+rBKEhnDLWWXDs+48+7OUc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; 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Mon, 6 Mar 2023 08:47:16 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id 92FC3175AD; Mon, 6 Mar 2023 08:47:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678092441; 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=4T9cplH6CcELavmnQDL+WvQDU+eNL+kdMeEtlFvM8H4=; b=DkRogZl/JdJwfIwP6LhGN2oxIFuU0/tO3dSKrYWwkFXkuoUJUC8acaKLTJ6tqVMvnxhfgI 6rae8SkAkgczDJHTqo7uiESNRZkONVVeIEFphv0eAd/bTPBwVHwsF55ksN0fmFWAsZNgV0 qnUJl95i872/EYY1VrbXsCqjTIveMYI= X-MC-Unique: 78YQwoIxMnOTbm5uKc4vZA-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 v4 5/5] gitlab-ci.d/crossbuilds: Drop the 32-bit arm system emulation jobs Date: Mon, 6 Mar 2023 09:46:58 +0100 Message-Id: <20230306084658.29709-6-thuth@redhat.com> In-Reply-To: <20230306084658.29709-1-thuth@redhat.com> References: <20230306084658.29709-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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: libvir-list@redhat.com, Richard Henderson , Markus Armbruster , Maxim Levitsky , Wilfred Mallawa , qemu-arm@nongnu.org, Reinoud Zandijk , John Paul Adrian Glaubitz , 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 10.11.54.8 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678092444231100003 Hardly anybody still uses 32-bit arm environments for running QEMU, so let's stop wasting our scarce CI minutes with these jobs. Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Wilfred Mallawa Signed-off-by: Thomas Huth --- .gitlab-ci.d/crossbuilds.yml | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/.gitlab-ci.d/crossbuilds.yml b/.gitlab-ci.d/crossbuilds.yml index a25cb87ae4..61b8ac86ee 100644 --- a/.gitlab-ci.d/crossbuilds.yml +++ b/.gitlab-ci.d/crossbuilds.yml @@ -1,13 +1,6 @@ include: - local: '/.gitlab-ci.d/crossbuild-template.yml' =20 -cross-armel-system: - extends: .cross_system_build_job - needs: - job: armel-debian-cross-container - variables: - IMAGE: debian-armel-cross - cross-armel-user: extends: .cross_user_build_job needs: @@ -15,13 +8,6 @@ cross-armel-user: variables: IMAGE: debian-armel-cross =20 -cross-armhf-system: - extends: .cross_system_build_job - needs: - job: armhf-debian-cross-container - variables: - IMAGE: debian-armhf-cross - cross-armhf-user: extends: .cross_user_build_job needs: --=20 2.31.1