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Re: [PATCH] Add support for 4KS cpu.

To: Franck <vagabon.xyz@gmail.com>
Subject: Re: [PATCH] Add support for 4KS cpu.
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Tue, 4 Oct 2005 18:11:26 +0100 (BST)
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
In-reply-to: <cda58cb80510040810y286b06bcx@mail.gmail.com>
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References: <cda58cb80510040149p690397afo@mail.gmail.com> <Pine.LNX.4.61L.0510041219500.10696@blysk.ds.pg.gda.pl> <cda58cb80510040610k1a7f430fn@mail.gmail.com> <Pine.LNX.4.61L.0510041430120.10696@blysk.ds.pg.gda.pl> <cda58cb80510040810y286b06bcx@mail.gmail.com>
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On Tue, 4 Oct 2005, Franck wrote:

> >  See my other comment in this thread.  As to the SmartMIPS/crypto
> > instructions -- unless they are going to be emitted by GCC for the kernel
> > build (which I seriously doubt), there is no point in enabling them.
> 
> some assembly code could...

 In which case it has to be specific to the configuration used anyway and 
may just locally enable whatever instructions are needed (".set 
smartmips", etc.) and be enabled itself based on configuration, either at 
the run time, if possible and reasonable, or using a CONFIG_* option.

> hmm, I'm not an expert in MIPS cpu as you guys, so can you give me an
> example of others processors that have such TLB features ?

 Well, the extensions are a part of the SmartMIPS ASE, so they are 
certainly not bound to any particular CPU type.

  Maciej

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