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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BCFCC4360C for ; Fri, 27 Sep 2019 08:59:34 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 4D792217D7 for ; Fri, 27 Sep 2019 08:59:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4D792217D7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48118 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iDm69-0008Dg-Be for qemu-devel@archiver.kernel.org; Fri, 27 Sep 2019 04:59:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51334) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iDm2a-0005B4-3K for qemu-devel@nongnu.org; Fri, 27 Sep 2019 04:55:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iDm2Z-0005d1-5M for qemu-devel@nongnu.org; Fri, 27 Sep 2019 04:55:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59030) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iDm2X-0005RT-3f; Fri, 27 Sep 2019 04:55:49 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 37DF018CB8FB; Fri, 27 Sep 2019 08:55:47 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-47.ams2.redhat.com [10.36.116.47]) by smtp.corp.redhat.com (Postfix) with ESMTP id E3DF5600C6; Fri, 27 Sep 2019 08:55:46 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 234A017535; Fri, 27 Sep 2019 10:55:46 +0200 (CEST) Date: Fri, 27 Sep 2019 10:55:46 +0200 From: Gerd Hoffmann To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Subject: Re: [RFC PATCH] configure: deprecate 32 bit build hosts Message-ID: <20190927085546.2aemjmwudvgpek3y@sirius.home.kraxel.org> References: <20190925233013.6449-1-alex.bennee@linaro.org> <20190926125817.GB19660@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190926125817.GB19660@redhat.com> User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.63]); Fri, 27 Sep 2019 08:55:47 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , "open list:RISC-V" , Richard Henderson , QEMU Developers , qemu-discuss , qemu-s390x , qemu-arm , qemu-ppc@nongnu.org, Alex =?utf-8?Q?Benn=C3=A9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, > That leaves armv7 as the only 32-bit arch in Fedora that is somewhat > active & maintained. I don't have any real insight on whether any > armv7 (Fedora) users are making much use of QEMU/KVM though, either > system or user emulation. Played with system emulation a while back. I doubt this is used much in practice. It's very slow for various reasons (no gic, no armv8 arch updates to support kvm virt better, slow sdcard/usb I/O). TCG on a beefy x86 box is roughly the same speed. Also 1G of memory isn't that much even without considering virtual machines. The rpi4 with 4G (disclaimer: don't have one) probably works better. But note they are finally working on a 64bit kernel for raspbian, which I expect is only a first step for better 64bit support. cheers, Gerd