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Re: MIPS32/MIPS4K kernel compilation settings

To: Colin.Helliwell@Zarlink.Com
Subject: Re: MIPS32/MIPS4K kernel compilation settings
From: Ralf Baechle <ralf@linux-mips.org>
Date: Mon, 7 Oct 2002 14:18:44 +0200
Cc: linux-mips@linux-mips.org
In-reply-to: <OFFFD113F8.B40CC667-ON80256C4B.0028865D@zarlink.com>; from Colin.Helliwell@Zarlink.Com on Mon, Oct 07, 2002 at 08:48:26AM +0100
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <OFFFD113F8.B40CC667-ON80256C4B.0028865D@zarlink.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.2.5.1i
On Mon, Oct 07, 2002 at 08:48:26AM +0100, Colin.Helliwell@Zarlink.Com wrote:

> Was just wondering why the (2.4.19) kernel compilation for MIPS4K systems
> appears to be using the "-mips2" compiler setting - shouldn't it be using
> -mips4 or -mips32 to get the full instruction set?

Because we want MIPS II only ;-)

There are serious problems with the use of 64-bit stuff in the 32-bit
kernel, so we can't use mips3, mips4 or mips64.  -mips32 works but is not
supported by all toolchains.  Anyway, mips32 doesn't deliver much that isn't
already part of MIPS II.

  Ralf

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