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Re: [Oops] Indy R4600 Oops(es) w/ 2.4.19-rc1

To: linux-mips@oss.sgi.com
Subject: Re: [Oops] Indy R4600 Oops(es) w/ 2.4.19-rc1
From: Jan-Benedict Glaw <jbglaw@lug-owl.de>
Date: Mon, 1 Jul 2002 11:13:22 +0200
Cc: Ralf Baechle <ralf@oss.sgi.com>
In-reply-to: <20020630174717.GI17216@lug-owl.de>
Mail-followup-to: linux-mips@oss.sgi.com, Ralf Baechle <ralf@oss.sgi.com>
References: <20020629220513.GC17216@lug-owl.de> <20020630174717.GI17216@lug-owl.de>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.4i
On Sun, 2002-06-30 19:47:17 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de>
wrote in message <20020630174717.GI17216@lug-owl.de>:
> On Sun, 2002-06-30 00:05:13 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de>
> wrote in message <20020629220513.GC17216@lug-owl.de>:
> [...]
> >   10:   bc600060  0xbc600060
> > Code;  88016ce0 <r4k_flush_cache_range_d32i32+e4/16c>
> >   14:   bc600080  0xbc600080
> 
> Well, I've bulid the same kernel with CONFIG_MIPS_UNCACHED and the box
> is running^Wsnailing fine with it. I'm experiencing a little peformance
> drop (100 BogoMips -> 2.79 BogoMips), but it comes up in finite time:-)

I've got some mail that support for my early R4600 (well, the bug fixes
for it...) got removed some time ago. I've looked at the diff of r1.3
(2.4.16) and r1.3.2.3 (2.4.19-rc1) and it seems that mostly calls to
__save_and_cli() and __restore_flags() got removed. Reading <asm/war.h>,
it really seems that this is causing my problem.

Ralf, would you accept a patch adding these lines again surrounded by
#ifdef CONFIG_CPU_R4X00 ... #endif /* CONFIG_CPU_R4X00 */? The current
state however isn't that fine: running uncached is no fun:-(

MfG, JBG

-- 
Jan-Benedict Glaw   .   jbglaw@lug-owl.de   .   +49-172-7608481
         -- New APT-Proxy written in shell script --
           http://lug-owl.de/~jbglaw/software/ap2/

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