From owner-freebsd-questions@FreeBSD.ORG Mon Apr 13 10:46:27 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4D292C21 for ; Mon, 13 Apr 2015 10:46:27 +0000 (UTC) Received: from isis.lip6.fr (isis.lip6.fr [132.227.60.2]) by mx1.freebsd.org (Postfix) with ESMTP id 73C4B3B6 for ; Mon, 13 Apr 2015 10:46:25 +0000 (UTC) Received: from asim.lip6.fr (asim.lip6.fr [132.227.86.2]) by isis.lip6.fr (8.15.1/lip6) with ESMTP id t3DAkIlH020469 for ; Mon, 13 Apr 2015 12:46:18 +0200 (CEST) X-pt: isis.lip6.fr Received: from [0.0.0.0] (exit1.telostor.ca [62.210.254.239]) (authenticated bits=0) by asim.lip6.fr (8.15.1/8.14.4) with ESMTPSA id t3DAkHvI020621 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 13 Apr 2015 12:46:17 +0200 (MEST) Message-ID: <552B9E81.9080005@asim.lip6.fr> Date: Mon, 13 Apr 2015 12:46:25 +0200 From: =?windows-1252?Q?Pierre-Yves_P=E9neau?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.6.0 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: How FreeBSD manage more than 4GB on 32 bits architecture References: <552794F7.60306@asim.lip6.fr> <20150410171240.770.qmail@ary.lan> In-Reply-To: Content-Type: multipart/mixed; boundary="------------040807020005030308040200" X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (isis.lip6.fr [132.227.60.2]); Mon, 13 Apr 2015 12:46:18 +0200 (CEST) X-Scanned-By: MIMEDefang 2.75 on 132.227.60.2 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Apr 2015 10:46:27 -0000 This is a multi-part message in MIME format. --------------040807020005030308040200 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Thanks everyone for your advices. If FreeBSD is chose for this work, I'll look at PAE and MIPS support. On 04/10/2015 09:16 PM, Adrian Chadd wrote: > Hi! > > Everyone - this is a research project. If they want to hack around > with FreeBSD on a PAE style 32 bit system but massively parallel, > please let them. If they hit the same walls as others have hit, > hey, great. But they may come up with something novel. > > Pierre - thanks for looking into it. Yes, there's PAE support in > FreeBSD. Yes, there's some NUMA domain awareness in FreeBSD. > You're definitely not starting from scratch. I don't know of any > PAE style awareness in the MIPS32 code; that would be a good place > to start investigating. > > So please take a look at what PAE / i386 is doing and see if you > can map that to vm and pmap management for MIPS32. It'd likely > overlap a lot with how we would support > 256MB of RAM on MIPS32 - > right now we just use the direct map setup for everything, and > that's limited to the KSEG sizes of 256MB. > > > > -adrian _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions To > unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > - -- +---------------------------------------------------------------+ | Pierre-Yves Péneau (#3361856) | SoC - LIP6 - UPMC | | Couloir 24-25 Bureau 417 | first.last@lip6.fr | | 4 place Jussieu 75252 Paris Cedex 05 | +33 1 44 27 54 15 | +---------------------------------------------------------------+ -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJVK56AAAoJEPy7VC2L9m/A7YcP/3cDIl1hnTu3iZ9XLiHFY+aN 4FPE+s1dqsSBZJ8QWpQe8EN2psi59J8DPNHgsrskk5C0Y9XJbcq/uuQkDDSZTYR9 D5K/FV+nctY2V75AXS2IEaMn6JvfI1/xuLf2M561wCla8LmqUPdOZ5sKj6kFTexc CBZzQ6LtIQmGPiRgYoYJlrF9SSVF/lgUZougK03AhJped7UgAM0YH7cgcJ1FwOPX h306mv5yJyprSfKfV8XlFRZIhmr4bMv4LHZB0AKG5iFf5T40CiwRLnawQ6blfHFq /0pmQ3GC7Pv814+kFUm0L6RjXWdDITM/Qs7TqkeIP586lBwof6CpVwNQnuU03Bl3 TwIWOcNglTfqt/BxgNfe7CfuXGNnMxVpGLYn3wjBhtUhn7gFy+YWdrcxnSpBAfL9 HvBG2FN9WFh1O4+15Q7Cre+fYl94gxo3/+/5P97cNKit//r+vkxJSDXbjGgFU7ij zZbSaiUmpMzj+zfd/Yr97Aa4Mhb4UPQl0Dtf96SUXpdRLfOz2jBQ/OcoJNiXHwMP 6LHS64l3+kQgwdPUHnOyVhEdU0BlrScDO8VaOh2SiKIbbMT1j3/CMkXRISMnBN5y nDt2PTp/8C/kzLiLWx43Hw12q9cVGvSBlgTMRMPy2TCWS01FLb3S1KxmtfBkvKj9 lS4hP3Q3mKV5kAirnAaA =IyI1 -----END PGP SIGNATURE----- --------------040807020005030308040200 Content-Type: application/pgp-signature; name="0x8BF66FC0.asc.sig" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="0x8BF66FC0.asc.sig" iQIcBAABCAAGBQJVK56AAAoJEPy7VC2L9m/A+AEQAMrhF7BM3uFJLew6qZlBRFes8cEETNNv ajXOGyG/vOZbozDhKkXUrsBEKXj1AYasVwnr+OhdORqqJyEQtITPm4A3m7HdlhlWe1G4lt4I 7yXz1S/nZk4RJi+xBpr/mSysF2P9AhWELuoqMLLITN+tOeoF+j3gJoR8sDE65aSUdl+7WK9K OueTZhqQWdO6j0DKJ3G9mNjVdP2qaEVmr0FCAJbRFDQVLYqVzSBU7SGMz5VnXa8QFkuc9DGj lw4yJZMl/aptGKIsSUIP30/Alw8IBf+WFpXrWD4e76HUgTaiqiHmAWeSJbbmUZWJZDw4lrrS d/QU36uTPI+Z+ZtXliwJyLQpNh3s7OB+mFqZzqcXwP+Rv95ly9u0T0ps4FHpkVHoo4oFqv4E H723IsGH36yF1uwDgf8sToPhwDVOMSBBuiLIgAbbM9eInuUztqmJECDXKjjNlUtv+IHtXZdN j4JtrwLJSD2NKijXK77S3vlkzC3LutYT+eY3o1WQqEfYyB6kuh2nZyPeAgWAvIbbxdTAWVGn 8FcJfdjK1LOBvV9orNahuC4OPJQhUBpph+r/OllbK7v7nfxgZqLrhfCEbbgNWNyFQ//VA+Sr z35Ch96OL8Fr7tVK+muHeTAh0AbY+kk3GEp06QYuE62+bf7lL0YOUA+MnCuSZPqIJ3LZa8mQ N6DM --------------040807020005030308040200--