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Re: [PATCH] mm/pg-r4k.c: Dump the generated code

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] mm/pg-r4k.c: Dump the generated code
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Thu, 4 Oct 2007 18:34:04 +0100 (BST)
Cc: Franck Bui-Huu <vagabon.xyz@gmail.com>, Thiemo Seufer <ths@networkno.de>, linux-mips@linux-mips.org
In-reply-to: <20071004154215.GA10682@linux-mips.org>
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References: <47038874.9050704@gmail.com> <20071003131158.GL16772@networkno.de> <4703F155.4000301@gmail.com> <20071003201800.GP16772@networkno.de> <47049734.6050802@gmail.com> <20071004121557.GA28928@linux-mips.org> <4705004C.5000705@gmail.com> <Pine.LNX.4.64N.0710041616570.10573@blysk.ds.pg.gda.pl> <20071004153008.GE6897@linux-mips.org> <Pine.LNX.4.64N.0710041631080.10573@blysk.ds.pg.gda.pl> <20071004154215.GA10682@linux-mips.org>
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On Thu, 4 Oct 2007, Ralf Baechle wrote:

> Anything in excessive amounts is toxic and that includes compatibility.
> A true MIPS generic kernel would be hard to do.  But we have kernels that
> can support all variants of the Malta even though Malta has more CPU options

 Have the issues been fixed?  I recall there was a problem with FPU 
context switching which would not let a MIPS IV Malta kernel (needed for 
all the old QED CPU core cards) run with a MIPS32r2 core.

> than any other system.  Or for your personal toy project, all DECs wouldn't
> be too hard either, or?

 The DECs should be reletively easy if we finally managed to get rid of 
all the 64-bit-isms in the 32-bit kernel even if built for MIPS III or 
above.  Which, given the recent commitment to 32-bit cores is what I would 
actually expect.

  Maciej

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