Date: Mon, 13 Apr 2015 23:14:50 +0200 From: =?UTF-8?B?UGllcnJlLVl2ZXMgUMOpbmVhdQ==?= <Pierre-Yves.Peneau@lip6.fr> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: How FreeBSD manage more than 4GB on 32 bits architecture Message-ID: <552C31CA.4070300@asim.lip6.fr> In-Reply-To: <CAJ-Vmontec73iDwRBwrXGbDjW2JntLvWA75b_E4wzsvsbh%2BDTg@mail.gmail.com> References: <552794F7.60306@asim.lip6.fr> <20150410171240.770.qmail@ary.lan> <CAJ-Vmo=1E1TLQLsPR23zOV5gB3P-p0UwxDeQ0yPJzs_SA9h0eQ@mail.gmail.com> <552B9E81.9080005@asim.lip6.fr> <CAJ-Vmontec73iDwRBwrXGbDjW2JntLvWA75b_E4wzsvsbh%2BDTg@mail.gmail.com>
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This is a multi-part message in MIME format. --------------080302000501040704010305 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 04/13/2015 11:08 PM, Adrian Chadd wrote: > On 13 April 2015 at 03:46, Pierre-Yves Péneau > <Pierre-Yves.Peneau@lip6.fr> wrote: Thanks everyone for your > advices. > > If FreeBSD is chose for this work, I'll look at PAE and MIPS > support. > >> Hi! > >> If there's anything we can do to help you along with choosing >> FreeBSD then please don't hesitate to ask! > > > >> -adrian > > 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" >>>> > > >> >> _______________________________________________ >> 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" > Thanks Adrian. I can't change the operating system *now*. For my internship, I've to use an homemade OS specially designed for our architecture (TSAR). But I really think this OS should be changed, and I'll try to do that for my PhD. - -- +---------------------------------------------------------------+ | 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 iQIcBAEBCAAGBQJVLDHIAAoJEPy7VC2L9m/Ab0QQALK/ZBwV0ejpRwU5tmX62ZRw bYNPcOINy1E+K6AIm5CMD1sav794TCvs2pG+4UtWm1Pwa+QRxhKx6LYDk5xkDbyX 8USIHz+hPI7IuXDv7HAVsPB0mwVZzrW+B9Ooa+GUQP119E/WGydrkTe7oMt4OCwx WbjWGId1Jl0oZTmlcF1jFHKHTfjDnL1sq2ckDI3EwO47zaJVzAVmBNRi7f7qjBu0 6nG/BF3Zef/lwoMZOJd1dszd/jSGnyl9mXbVUZS3RHLug6cFh8RGtqjaf9nI4hdH OahWY5kX6nhiKFLn2KJn7nl/VEVPLaV1ZBy7gxZc9hGa7A41ScfMX5UC5oVnQwFO FtWAMrDDb8tKdmD7IjbA4Rs1DSPpmCmLCt5Wp7ydVnc3L1Utnxqx5953atrMIiUb 0SP+7prcc0sYe1/WSU06BaagDIg2PeyVda6lQkwO2BcUvtt8FkA7SQc8BfUPm4pA nufSEhGWq9T0GvyeehqV0K7g735ApxOKswJOYnNEo9zkHyuF62C68pdsBANTLVDC KfS2DvweAY+W6ymZGSJG3o0ZUQ/CQxL5Kc6S4CJlJ3Fbvm4QqivMx+ekpX6KiijY +Nsy7UZnGz7XsPAI6QmDE+jfMrabYl+Goq+IWOo8nYkGsgad2b052aiJ9wbISY/W lxEiCvxieZn9kXFIDvbb =fxAG -----END PGP SIGNATURE----- --------------080302000501040704010305 Content-Type: application/pgp-signature; name="0x8BF66FC0.asc.sig" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="0x8BF66FC0.asc.sig" iQIcBAABCAAGBQJVLDHIAAoJEPy7VC2L9m/AaHcP/0JllVJbI/Z9R45WuF1AoaeNjvpa2T0N YOQ/p7+zEQ02l6rVXSovq7kv9lu+r5L4ewI77nTO39Nt0FtEYNDBdFZhQJi2xSVxk6K0hYFZ LxbntyfvWnL96hqZIqFgh3DgjRjfbJmqKd9+TDAQ70wG5Z7B24tzOHWhpcsh7JYNu9nL0yPj NTLdKfg1GkzabrOPerRLK2YY4Ji/p30NNadhJPxwghe9tDQvqoNyfSMaoo7kErrxvXRvXlS1 37N5UmCyNppitf8cjDocmXkNxgfwFkfGy4LudXWS9k94bBq9sCSPAqTTd02NBMZ1QhpeilVQ XLrR9F8wF83z+GgkLEQt5An/GMExp13+BmjKkXCFTZ/uhX8mNLuN92pfpfRRddhpKt1gSmJ/ LTPk2DT6SfT9NhYBn2Jkwt9KGKpDuShgFUw8IO2GhzAJnCM1eMqxpWae+mjjcLRVFKXTCIZZ LOAGcjtEJw2zhznLX8JPsIdBu9/fR57u6EibGdlHaU7ZFwpv5Ezy+DBTdChRS37cenIsAoDY pl0SnqxlR9x1p9S7GZySxZ4hoFxNUHk362ZOJDV0CNvBAR2GDuBQQP5Z0mdBT6paL34AyGA/ iHXdQMJ4KdUJrcpzKmJAQYhlA9cifIqm3X7mR9Rwpa7Qzfr6UVGSmR7+0hEdfgCsH+X3Sn1U hvcq --------------080302000501040704010305--
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