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[209.132.180.67]) by mx.google.com with ESMTP id j7si16067688plb.91.2018.12.12.05.27.49; Wed, 12 Dec 2018 05:28:28 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@snewbury.org.uk header.s=eater header.b="AWRkn/gE"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727471AbeLLN0s (ORCPT + 99 others); Wed, 12 Dec 2018 08:26:48 -0500 Received: from know-smtprelay-omc-11.server.virginmedia.net ([80.0.253.75]:42513 "EHLO know-smtprelay-omc-11.server.virginmedia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726232AbeLLN0s (ORCPT ); Wed, 12 Dec 2018 08:26:48 -0500 Received: from mail.snewbury.org.uk ([77.243.189.247]) by cmsmtp with ESMTPA id X4XEgQUF7htC0X4XEgNQ7w; Wed, 12 Dec 2018 13:26:45 +0000 X-Originating-IP: [77.243.189.247] X-Authenticated-User: sjnewbury@virginmedia.com X-Spam: 0 X-Authority: v=2.3 cv=KJXu82No c=1 sm=1 tr=0 a=7eWGW6afXjFjJVQJLTi0Pg==:117 a=7eWGW6afXjFjJVQJLTi0Pg==:17 a=IkcTkHD0fZMA:10 a=2ur7OfE09M0A:10 a=q4uHb2JfoHBGn-mcJ-AA:9 a=QEXdDO2ut3YA:10 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=snewbury.org.uk; h=content-transfer-encoding:mime-version:x-mailer:content-type :content-type:references:in-reply-to:date:date:from:from:subject :subject:message-id; s=eater; t=1544621203; x=1546435604; bh=kWj mIltsq6B/tjEvq+fx2ux6POJfkYpJ2n2A55mvA1U=; b=AWRkn/gEoFLk/aI5XmA 6vGmyfnOITwlEtmcfmaF1125xDgrkNNCBTvQrly2Gxtqv8AuJd4pZ2HrF+nFBHe3 qHvcG5BkEFhHpDU1ogHN/ebVd7KfISJ6nlziZgjUkKrW3u02YXlHNygChKMP3iXv PZb32SDzSo1kwtIoQs24fzyo= X-Virus-Scanned: amavisd-new at snewbury.org.uk Received: from android-a9f8fd57ba190b44.media.snewbury.org.uk (android-a9f8fd57ba190b44.media.snewbury.org.uk [192.168.75.105] (may be forged)) (authenticated bits=0) by mail.snewbury.org.uk (8.14.9/8.14.9) with ESMTP id wBCDQfTJ019409 (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Wed, 12 Dec 2018 13:26:42 GMT Message-ID: <1544621233.117529.33.camel@snewbury.org.uk> Subject: Re: Can we drop upstream Linux x32 support? From: Steven Newbury To: Thorsten Glaser Cc: "linux-kernel@vger.kernel.org" , Linus Torvalds , macro@linux-mips.org, luto@kernel.org, arnd@arndb.de, dalias@libc.org, s@ecloud.org, catalin.marinas@arm.com, fweimer@redhat.com, glaubitz@physik.fu-berlin.de, christian.brauner@canonical.com, hjl.tools@gmail.com, hpa@zytor.com Date: Wed, 12 Dec 2018 13:27:13 +0000 In-Reply-To: References: <1544605954.117529.27.camel@snewbury.org.uk> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfJaXkC1sApP7rfLdV/Ed/puU08beWbbcBzwBd2/kmrK/MpN7DuyOB2lfItvQs/AWPxNLDc0zZAimfFgt0s27GhEExWlfH8zN88Hm5C8DVahxCU80zdqt 42eELp/sBkG6SdTlET1J5YCQAX8KdRqkbpwhDg0079l2DAcr/Bh30gTzPDmsz0ef7XfQXZkc+qTFDwzwHYwTMoaENvdq9by6eD8oYgnVUPIKJWZqsabwoUlh xuikYtxFmdCs3fgwB/abrS9ub7JkFYUeqry8fKMV+FUZ3CN63Ri/ZAjbranCrnFeAPju5nJFKEsFImHtncUFxT4OynnJLHmky5nH2Xz6tVukToJAwx+8Yn3E vKDO8HZ02jR1Y1w6X7s4GTvI/09PXCJ76X9IXKMjbZMDIPEep4WV7P88DhJuEmLTeOdCCYKyYsa4VqLemCotCtmou4d4idC+yswFiw7fEqkLjDVE9P6dpawK AjeRxENXjzK0HIhf2kS5VO3lHBHwvpsM68NTEw== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Wed, 2018-12-12 at 10:48 +0000, Thorsten Glaser wrote: > Steven Newbury dixit: > > >I can't help but wonder if it wouldn't make more sense to drop x86 > >support from long mode than x32. AMD64 x86 support was always > intended > > Do you mean i386? > > x86 = { i386, x32, amd64 } > Yes, sorry to be unclear. I mean the "IA32 ISA". > No, please don’t. I use i386 as “companion architecture” to x32, > only the kernel and actually memory-hungry things (qemu) are > amd64 binaries on my system, and this works very well. > Well, if you have amd64 qemu anyway, why can't you use binfmt_misc with qemu-user to simulate i386? I'm just saying that makes more sense to me than dropping x32. -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEWa1B4K0Hk12RDstE+lAa6BzrmeAFAlwRDLIACgkQ+lAa6Bzr meB2FQgAxF85pmFK90op1tY/lPKFqnQZdbx1zq1gPQVS1N30Kqt+FTJYSi0HNfPd Q0l1TVx7BCF2VFzqQkLWPwtjeK8OP8SY9D8ShbYo2/Ul0e0tfc2L9+YJpa3QCzvE p3G6SE92+wZZZlPoT+bVGj4heRUrCzUi77/bTIRO4JkSelJFDSZEVoZqTabYuveh lBtbDZ6WvFxAGZg3fSjpZwq31C0cV/W7S0FJhutb+rAhIpoL4jHmddnhUSq+mM0+ lHNQ3O8WmbzR8FY6lezhhmBir29iW/2gJ/+Z5kSSdBV3buk6O8LB2WbFORhpGSYb pWb2drFGVZeQhuOrboG95ZQ1d+4YnQ== =skLP -----END PGP SIGNATURE-----