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Re: [MIPS] Use conditional traps for BUG_ON on MIPS II and better.

from [Ralf Baechle] [Permanent Link][Original]
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Subject: Re: [MIPS] Use conditional traps for BUG_ON on MIPS II and better.
From: Ralf Baechle <ralf@linux-mips.org>
Date: Sun, 3 Dec 2006 21:35:18 +0000
Cc: linux-mips@linux-mips.org
In-reply-to: <20061204.015327.36921579.anemo@mba.ocn.ne.jp>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <S20037651AbWK3BXW/20061130012322Z+10503@ftp.linux-mips.org> <20061204.015327.36921579.anemo@mba.ocn.ne.jp>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.4.2.2i 
On Mon, Dec 04, 2006 at 01:53:27AM +0900, Atsushi Nemoto wrote:

> > This shaves of around 4kB and a few cycles for the average kernel that
> > has CONFIG_BUG enabled.
> > 
> > Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
> 
> It seems this commit break QEMU kernel ...  or QEMU can not interpret
> the TNE instruction correctly?

Thiemo says that's indeed a possibility.  Probably that feature has not
been well tested in qemu.

  Ralf
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