From owner-freebsd-stable@freebsd.org Tue Jan 30 12:42:54 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AC37BEC813B for ; Tue, 30 Jan 2018 12:42:54 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2DE7A6AF50 for ; Tue, 30 Jan 2018 12:42:53 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221] (may be forged)) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id w0UCgZfs076055 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 30 Jan 2018 13:42:36 +0100 (CET) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: Andre.Albsmeier@siemens.com Received: from eg.sd.rdtc.ru (eugen@localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTP id w0UCgSqQ022452; Tue, 30 Jan 2018 19:42:28 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: i386 with 4GB RAM: less than 2GB available on A2SAV (Intel Atom E3940) To: Andre Albsmeier References: <20180128145703.GA80724@bali> <5A6DF168.3010902@grosbein.net> <20180130065931.GA43711@bali> Cc: freebsd-stable@freebsd.org From: Eugene Grosbein X-Enigmail-Draft-Status: N1110 Message-ID: <5A706834.8030405@grosbein.net> Date: Tue, 30 Jan 2018 19:42:28 +0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: <20180130065931.GA43711@bali> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=2.2 required=5.0 tests=BAYES_00, LOCAL_FROM, RDNS_NONE, T_DATE_IN_FUTURE_96_Q autolearn=no autolearn_force=no version=3.4.1 X-Spam-Report: * 0.0 T_DATE_IN_FUTURE_96_Q Date: is 4 days to 4 months after Received: * date * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains * 1.9 RDNS_NONE Delivered to internal network by a host with no rDNS X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on hz.grosbein.net X-Spam-Level: ** X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Jan 2018 12:42:54 -0000 On 30.01.2018 13:59, Andre Albsmeier wrote: >> Also, I'd like to know reasons that made you stick to 32 bit OS >> as we have pretty good support for 32 bit applications running under 64 bit system. > > I (still) have 32 bit machines and don't want to maintain 2 userlands. > Each machine has its own kernel but userland (updated via nfs) must > remain 32 bit. > > Or is it possible to boot a 64 bit kernel and have everything else in > 32 bit? I have not tried "everything else in 32 bit", there may be some rough edges dealing with run-time linker but you can try. /sbin/init is statically linked and it should work with kernel having option COMPAT_FREEBSD32. /bin/sh may be OK too provided /libexec/ld-elf32.so.1 is in place. You should really consider switching to 64 bit kernel for such hardware.