From mboxrd@z Thu Jan 1 00:00:00 1970 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.gnu.org (lists.gnu.org [209.51.188.17]) (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 105F0C6FD1F for ; Thu, 16 Mar 2023 07:30:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pci2u-0007pF-Po; Thu, 16 Mar 2023 03:29:08 -0400 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 1pci2t-0007oh-A5 for qemu-devel@nongnu.org; Thu, 16 Mar 2023 03:29:07 -0400 Received: from mail-wr1-x431.google.com ([2a00:1450:4864:20::431]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pci2r-0003e2-If for qemu-devel@nongnu.org; Thu, 16 Mar 2023 03:29:07 -0400 Received: by mail-wr1-x431.google.com with SMTP id r18so611484wrx.1 for ; Thu, 16 Mar 2023 00:29:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678951743; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=mKaw5EhrwAJEFj3VLODR4NkkmHZYvsb9mFSG73gOPtk=; b=SJEPZDygSUDXRevz97q9uGKyorDoKJjjgX0wCWhPI1tIwfCSM3pEmVphfq4FFJazaq /5xgEu4fgyewKtMGKmEuyJaUMtMtjai5EA8mQ9Z1mVUEBnWgolJTcPTQyfW3DVm3fW9v Cvg34o/NQ7sfjmF4pzttvCP7wo9pjP4jCCnO7RGuH4zoXOHhfdQeX63LByYVc6XR+/3a hyi64Hgua9igeiSElUhgOK8ye5pEiwhqxRJuGomr1c832AK8d2YgXbbCVHhIUg1CJkQI Io6aB+jBUcLMrYtw9x4CEEg0BAz4DxWpiS/WyvawthTq9zwHTOE2qHWti1gdgQuPZnFL GbpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678951743; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mKaw5EhrwAJEFj3VLODR4NkkmHZYvsb9mFSG73gOPtk=; b=0GJ2nEiq07ZtPAB8SPC7ucSf/1widRsL8eNPsxeu1WtA7Q+1CVa5sd0V7b0Um3bQIz 1VeSJPeHtCzYbkB0fYmKhWpyRdaWVqQCjytlNDayVZrNBQmIe7xCpW8JeKMo90AaL3TP hiUwh5vD55EgwyA8+uNlyZQG6o7BrbsmRQqp8td7XR0P/wz0ZQgOHrP7E9xaI2HIRuvp CgKglw+I/2O+8q35AwSeqBuHbqcfhphy8ZQGme8gkaOdtto+BdYQwwJPfmuWLVKcXPBB +BM0ZxjsgYbaZImUc5KGW9icUDNcsfV8uUJr2HNAww8dc9pTNXGIQP6H0MdR+BOB8IOc wSaA== X-Gm-Message-State: AO0yUKU6YlLFD0H+5w4QXuGbZo/kTA9OT7M66M0wgXYCqWvLKk7EMMNn jZZJnowKWQNWJnHh1m5e3e3nyg== X-Google-Smtp-Source: AK7set9Mp6e2jpr1QIxG+1YV+QWy6Te/GoVmgQIeuIbj2RWdVB1UEeBlzl6Sta2U/ok7bG28/BEPkQ== X-Received: by 2002:a5d:6ace:0:b0:2c5:594b:10d5 with SMTP id u14-20020a5d6ace000000b002c5594b10d5mr4148804wrw.1.1678951743598; Thu, 16 Mar 2023 00:29:03 -0700 (PDT) Received: from [192.168.30.216] ([81.0.6.76]) by smtp.gmail.com with ESMTPSA id k18-20020a056000005200b002c71dd1109fsm6588749wrx.47.2023.03.16.00.29.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Mar 2023 00:29:03 -0700 (PDT) Message-ID: <35022ff8-bf4b-1f52-73f9-db25c776cec1@linaro.org> Date: Thu, 16 Mar 2023 08:29:02 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: dropping 32-bit host support Content-Language: en-US To: Liviu Ionescu , Andrew Randrianasulu Cc: qemu-discuss@nongnu.org, QEMU Developers , Thomas Huth References: <3DD8295F-4BE0-4262-8C68-4A85A56D63C7@livius.net> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= In-Reply-To: <3DD8295F-4BE0-4262-8C68-4A85A56D63C7@livius.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=philmd@linaro.org; helo=mail-wr1-x431.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi Liviu, On 16/3/23 07:19, Liviu Ionescu wrote: > > >> On 16 Mar 2023, at 02:57, Andrew Randrianasulu wrote: >> >> Looking at https://wiki.qemu.org/ChangeLog/8.0 >> >> === >> System emulation on 32-bit x86 and ARM hosts has been deprecated. The QEMU project no longer considers 32-bit x86 and ARM support for system emulation to be an effective use of its limited resources, and thus intends to discontinue. >> >> == >> >> well, I guess arguing from memory-consuption point on 32 bit x86 hosts (like my machine where I run 32 bit userspace on 64 bit kernel) is not going anywhere, but what about 32bit userspace on Android tablets, either via Limbo emulator or qemu itself in Termux? > > or the countless 32-bit Raspberry Pi? > > my xPack binary tools, which include qemu arm & qemu riscv, are also available for arm 32-bit, and the analytics show about the same number of downloads for 32-bit as for 64-bit. > > given the current chip shortages, I estimate that the 32-bit Arm binaries will still be useful for a few more years. IIUC xPack uses npm -- so work on any environment where npm works --, and fetch/install existing toolchains. Looking at ARM, all offered toolchains are 64-bit host [1] and the deprecated [2]. Toolchains for 32-bit hosts are still available but also listed as "deprecated" [3]. [1] https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads [2] https://developer.arm.com/downloads/-/gnu-a [3] https://developer.arm.com/downloads/-/gnu-rm If QEMU is useful to you for testing installing xPack on a 32-bit emulated guest, I strongly recommend you to do that on a 64-bit host rather than a limited performance 32-bit Raspberry Pi 2, it is a much more pleasant "user experience". IMHO Raspberry Pi 2 was designed for embedded setup and prototyping with other electronic devices, not really as a compute intensive build CPU. >> At least I hope it will be not *actively* (intentionally) broken, just ...unsupported (so users who know how to run git revert still will get their build for some more time). > > I concur, please do not intentionally break support for arm 32-bit, this will make a lot of unhappy users, who currently have no choice to upgrade. > > > thank you, > > Liviu Regards, Phil.