From patchwork Mon Mar 6 08:46:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 13160709 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E80CC6FD19 for ; Mon, 6 Mar 2023 08:47:25 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.506780.779935 (Exim 4.92) (envelope-from ) id 1pZ6V1-0000e3-Ax; Mon, 06 Mar 2023 08:47:15 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 506780.779935; Mon, 06 Mar 2023 08:47:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pZ6V1-0000dw-77; Mon, 06 Mar 2023 08:47:15 +0000 Received: by outflank-mailman (input) for mailman id 506780; Mon, 06 Mar 2023 08:47:13 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pZ6Uz-0000dk-8P for xen-devel@lists.xenproject.org; Mon, 06 Mar 2023 08:47:13 +0000 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 7a8ddc30-bbfb-11ed-96b4-2f268f93b82a; Mon, 06 Mar 2023 09:47:11 +0100 (CET) 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-141-iFMUPCcmN3aMIcATWsDMhw-1; Mon, 06 Mar 2023 03:47:03 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D705D85C6F4; Mon, 6 Mar 2023 08:47:02 +0000 (UTC) Received: from thuth.com (unknown [10.39.193.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id 664C3175AD; Mon, 6 Mar 2023 08:47:00 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 7a8ddc30-bbfb-11ed-96b4-2f268f93b82a DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678092428; h=from:from: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; bh=tCsKG0wad2kO1KKnqRl1WoTNl9pW94eSqEiurkcIzhg=; b=WsiT/FQuS/inI7Y+rWJgid3sdapcChrttwN9U3XS6qF+qBcFVpe5Q5+lqAgqPPHD+fLHPI lWluwP+2VlR4NaIBihv0bHhVTwK1yIY7HN9ahppr3UHRZ9+OKxCUZBiAEVkM3wPkeQ3VPy +14RHBgiAF3QYoR2aLB6KqVaED2VA+0= X-MC-Unique: iFMUPCcmN3aMIcATWsDMhw-1 From: Thomas Huth To: qemu-devel@nongnu.org, Peter Maydell , Daniel Berrange , Paolo Bonzini Cc: Markus Armbruster , =?utf-8?q?Alex_Benn=C3=A9e?= , qemu-arm@nongnu.org, Maxim Levitsky , libvir-list@redhat.com, Richard Henderson , xen-devel@lists.xenproject.org, Reinoud Zandijk , Wilfred Mallawa , John Paul Adrian Glaubitz Subject: [PATCH v4 0/5] Deprecate system emulation support for 32-bit x86 and arm hosts Date: Mon, 6 Mar 2023 09:46:53 +0100 Message-Id: <20230306084658.29709-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 We're struggling quite badly with our CI minutes on the shared gitlab runners, so we urgently need to think of ways to cut down our supported build and target environments. Hardly anybody uses QEMU system emulation on 32-bit x86 and arm hosts anymore, so it's time to deprecate these environments now. This is a follow-up patch series from the previous discussion here: https://lore.kernel.org/qemu-devel/20230130114428.1297295-1-thuth@redhat.com/ where people still mentioned that there is still interest in certain support for 32-bit host hardware. But as far as I could see, there is no real need for system emulation on 32-bit x86 host and 32-bit arm hosts anymore, so it should be fine if we drop these host environments soon (these are also the two architectures that contribute the most to the long test times in our CI, so we would benefit a lot by dropping those). v4: - Drop the patch that deprecated qemu-system-arm since it still might be required to enforce 32-bit guests with TCG - Only deprecate system emulation on 32-bit x86 hosts since user-mode emulation might still be useful in certain scenarios - Add a sentence how to enforce 32-bit mode with qemu-system-x86_64 v3: - Update some commit descriptions according to the suggestions in v2 - Added the Reviewed-bys from v2 v2: - Split binary and host deprecation into separate patches - Added patches to immediately drop the jobs from the CI Thomas Huth (5): docs/about/deprecated: Deprecate 32-bit x86 hosts for system emulation docs/about/deprecated: Deprecate the qemu-system-i386 binary gitlab-ci.d/crossbuilds: Drop the i386 system emulation job docs/about/deprecated: Deprecate 32-bit arm hosts for system emulation gitlab-ci.d/crossbuilds: Drop the 32-bit arm system emulation jobs docs/about/deprecated.rst | 34 ++++++++++++++++++++++++++++++++++ .gitlab-ci.d/crossbuilds.yml | 24 ------------------------ 2 files changed, 34 insertions(+), 24 deletions(-)