From: Ralf Baechle <ralf@linux-mips.org>
To: Nemanja Popov <Nemanja.Popov@micronasnit.com>
Cc: linux-mips@linux-mips.org
Subject: Re: Lexra' s MMU
Date: Mon, 3 Feb 2003 13:26:34 +0100 [thread overview]
Message-ID: <20030203132634.C18186@linux-mips.org> (raw)
In-Reply-To: <001701c2cb62$3eccd500$e000a8c0@micronasnit.com>; from Nemanja.Popov@micronasnit.com on Mon, Feb 03, 2003 at 09:57:02AM +0100
On Mon, Feb 03, 2003 at 09:57:02AM +0100, Nemanja Popov wrote:
> Does Lexra's CPU LX4280 has MMU. I've found from dateaheet LX4280 that
> there is only SMMU (S stands for Simple) which does not include TLB and
> exceptions related to that.
> I've noticed port for lexra (among others also for LX4280) on cvs. Is it
> possible to run linux on that kind of processor, and if so will it manage
> user space application as it should with mmu.
TLB-less processors aren't supported at all by Linux 2.4. Linux 2.5 has
the infrastructure in place to support TLB-less processors but we don't
support that on MIPS. I guess it's probably not interesting because
TLB-less CPUs tend to be part of systems that are too resource constrained
to be of interest for use with Linux but I certainly wouldn't refuse such
patches.
The CVS kernel does not support Lexra processors. There are a bit over one
year old Lexra patches for 2.4. Me and the author agreed to not merge those
patches into the CVS kernel because Lexra is a dead company.
Ralf
prev parent reply other threads:[~2003-02-03 12:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-03 8:57 Lexra' s MMU Nemanja Popov
2003-02-03 8:57 ` Nemanja Popov
2003-02-03 12:26 ` Ralf Baechle [this message]
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