Date: Mon, 13 Apr 2015 12:46:25 +0200 From: =?windows-1252?Q?Pierre-Yves_P=E9neau?= <Pierre-Yves.Peneau@lip6.fr> To: freebsd-questions@freebsd.org Subject: Re: How FreeBSD manage more than 4GB on 32 bits architecture Message-ID: <552B9E81.9080005@asim.lip6.fr> In-Reply-To: <CAJ-Vmo=1E1TLQLsPR23zOV5gB3P-p0UwxDeQ0yPJzs_SA9h0eQ@mail.gmail.com> References: <552794F7.60306@asim.lip6.fr> <20150410171240.770.qmail@ary.lan> <CAJ-Vmo=1E1TLQLsPR23zOV5gB3P-p0UwxDeQ0yPJzs_SA9h0eQ@mail.gmail.com>
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[-- Attachment #1 --] -----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 Pneau (#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----- [-- Attachment #2 --] U+ T-o LI-:ADWLoj5![0*EԮD)xW ]9'!ϛ7ݖV{Q%/fN&/,c.*0L߭9=&|1:夔v_XJ:fYӺ@'qthEfAB 4- T!ϕg]K12%%m,IBOX> ԁ6!g%Qd<8w߫<W, ȴ)6 ~ZΧe۴OJlQQ裊 "߬,N5N1 A"Ȁ33 *8͕Ko]MmH=*(+d-˺7UG g#YQW }Գ_h֡.<!Pi:Y[+`fm X܅C~Bގ/kJky0!I7Jt.m/FP+d'rkɐ7help
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