From: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Subject: Re: Does HIGHMEM work on 32-bit MIPS ports?
Date: Wed, 20 Feb 2008 11:20:33 -0800 [thread overview]
Message-ID: <47BC7D81.8030309@cisco.com> (raw)
> I've written MIPS highmem support in late 2002 for a customer who
> back then wasn't interested in being the first through the 64-bit
> minefield. Which back then certainly was justified - but there are
> now fairly stable 64-bit Linux kernels available so if you happen to
> be running on 64-bit hardware don't even spend a nanosecond on
> thinking about 32-bit highmem kernels. Highmem fundamentally sucks
> rocks through a straw.
>
> Coming back to your question. Highmem was only ever tested to work
> on SB1 and somewhat later PMC-Sierra RM9000 cores, both being 64-bit.
> With the increasing maturity of 64-bit Linux interest in these went
> away and as the result the highmem code started a slow bitrot -
> unnoticed for many moons.
Hmm, this is not good. I've got a MIPS 24Kc processor with a very
awkward memory layout. Any hints?
> Ralf
--
David VomLehn, dvomlehn@cisco.com
The opinions expressed herein are likely mine, but might not be my
employer's...
next reply other threads:[~2008-02-20 19:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-20 19:20 David VomLehn [this message]
2008-02-21 10:55 ` Does HIGHMEM work on 32-bit MIPS ports? Maciej W. Rozycki
-- strict thread matches above, loose matches on Subject: below --
2008-03-07 5:02 David VomLehn
2008-03-05 22:55 David VomLehn
2008-03-06 15:44 ` Ralf Baechle
2008-02-26 21:06 David VomLehn
2008-02-20 4:09 David VomLehn
2008-02-20 16:18 ` Ralf Baechle
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