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Re: SB1250 locking up in init on current 2.6.16 kernel

To: Larry Stefani <lstefani@yahoo.com>
Subject: Re: SB1250 locking up in init on current 2.6.16 kernel
From: Thiemo Seufer <ths@networkno.de>
Date: Fri, 28 Mar 2008 13:43:17 +0000
Cc: linux-mips@linux-mips.org
In-reply-to: <926775.30590.qm@web38810.mail.mud.yahoo.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20080324203311.GB15294@linux-mips.org> <926775.30590.qm@web38810.mail.mud.yahoo.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.17+20080114 (2008-01-14)
Larry Stefani wrote:
> Hi Ralf,
> 
> I used git bisect and narrowed the lockup to the
> "[MIPS] Retire flush_icache_page from mm use." patch
> (see git results below).  This is consistent with my
> earlier testing and what Thiemo reported March 3 on
> the linux.debian.kernel list.  I tried his patch (mark
> pages tainted by PIO IDE as dirty) on 2.6.16.60, but
> it didn't prevent the lockup.

ISTR I got 2.6.16.60 to work by always enabling the cache flush in
ide.h (it is currently only run to clean out aliases). Keep in mind
that this is a crude workaround on top of other cache code hacks for
the SB-1.


Thiemo

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