How FreeBSD manage more than 4GB on 32 bits architecture
Pierre-Yves Péneau
Pierre-Yves.Peneau at lip6.fr
Mon Apr 13 21:14:51 UTC 2015
-----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 at 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 at freebsd.org mailing list
>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>>>> To unsubscribe, send any mail to
>>>> "freebsd-questions-unsubscribe at freebsd.org"
>>>>
>
>
>>
>> _______________________________________________
>> freebsd-questions at freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions To
>> unsubscribe, send any mail to
>> "freebsd-questions-unsubscribe at 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 at lip6.fr |
| 4 place Jussieu 75252 Paris Cedex 05 | +33 1 44 27 54 15 |
+---------------------------------------------------------------+
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=fxAG
-----END PGP SIGNATURE-----
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0x8BF66FC0.asc.sig
Type: application/pgp-signature
Size: 543 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-questions/attachments/20150413/59077210/attachment.sig>
More information about the freebsd-questions
mailing list