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[170.10.129.124]) by mx.google.com with ESMTPS id t18-20020a0cde12000000b00572008ee0a1si6649267qvk.558.2023.02.27.10.38.48 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Feb 2023 10:38:49 -0800 (PST) Received-SPF: pass (google.com: domain of berrange@redhat.com designates 170.10.129.124 as permitted sender) client-ip=170.10.129.124; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=XrN6BQFh; spf=pass (google.com: domain of berrange@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=berrange@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677523128; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=SWMomstYXFyZNSPGsc1edKoA4SVgbmaaZjlg916u2cs=; b=XrN6BQFh5BuTy8DO4dCwSWuYL7/mCWC6gmEw7tpA9rLX5TqE2MrZSji/USw7iq/RTpA+yG hexdHKjQ0VC+PbhewM3H8Etf7vpeBRpYi15dabvRKRgXsj+YfOhbm57TMIVlLOhWEImhJc qx6sAvQXLX1+KFUy/lqFo0Tz30pucvE= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-179-ZBZqiBNHN0mYplCPChLFgg-1; Mon, 27 Feb 2023 13:38:45 -0500 X-MC-Unique: ZBZqiBNHN0mYplCPChLFgg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BF4533823A02; Mon, 27 Feb 2023 18:38:44 +0000 (UTC) Received: from redhat.com (unknown [10.33.36.71]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 464B5C15BAD; Mon, 27 Feb 2023 18:38:42 +0000 (UTC) Date: Mon, 27 Feb 2023 18:38:39 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Thomas Huth Cc: qemu-devel@nongnu.org, Peter Maydell , Paolo Bonzini , Markus Armbruster , Alex =?utf-8?Q?Benn=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: Re: [PATCH 0/2] Deprecate support for 32-bit x86 and arm hosts Message-ID: Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= References: <20230227111050.54083-1-thuth@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230227111050.54083-1-thuth@redhat.com> User-Agent: Mutt/2.2.9 (2022-11-12) X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-TUID: ZFP4QNjIv7Aj On Mon, Feb 27, 2023 at 12:10:48PM +0100, Thomas Huth wrote: > 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. qemu-system-i386 and > qemu-system-arm are not really required anymore, since nobody uses > KVM on the corresponding systems for production anymore, and the > -x86_64 and -arch64 variants are a proper superset of those binaries. > So it's time to deprecate them and the corresponding 32-bit host > 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 32-bit host support for system emulation on x86 and > arm anymore, so it should be fine if we drop these host environments > now (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). Your description here is a little ambiguous about what's being proposed. When you say dropping 32-bit host support do you mean just for the system emulator binaries, or for QEMU entirely ? And when the deprecation period is passed, are you proposing to actively prevent 32-bit builds, or merely stopping CI testing and leave 32-bit builds still working if people want them ? With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|