From: Ralf Baechle <ralf@linux-mips.org>
To: Sagar Borikar <Sagar_Borikar@pmc-sierra.com>
Cc: Steve Graham <stgraham2000@yahoo.com>, linux-mips@linux-mips.org
Subject: Re: O2 RM7000 Issues
Date: Fri, 21 Sep 2007 14:47:53 +0100 [thread overview]
Message-ID: <20070921134753.GA8090@linux-mips.org> (raw)
In-Reply-To: <340C71CD25A7EB49BFA81AE8C839266757076E@BBY1EXM10.pmc_nt.nt.pmc-sierra.bc.ca>
On Thu, Sep 20, 2007 at 11:27:18PM -0700, Sagar Borikar wrote:
> rm7k_wait_irqoff patch doesn't seem to improve the things for illegal instructions for E9k core.
> But many customers have reported that they do get illegal instruction when ICACHE_REFILLS_WORKAROUND_WAR is not enabled.
This is due to a very unfortunate design issue in the RM7000 / RM9000. So
it wasn't done by accident but with full intention but I call it a bug
anyway. So this also means all revs of these cores are affected and if
the issue is not being hit for a particular workload and where
ICACHE_REFILLS_WORKAROUND_WAR is disabled then that that's by coincidence
not engineering.
Ralf
next prev parent reply other threads:[~2007-09-21 13:47 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-01 16:57 O2 RM7000 Issues Kumba
2007-07-01 22:07 ` freshy98
2007-07-02 13:08 ` sknauert
2007-07-02 13:08 ` sknauert
2007-07-04 15:27 ` Ralf Baechle
2007-07-04 19:22 ` Ralf Baechle
2007-07-16 11:53 ` Sergey Rogozhkin
2007-07-16 12:33 ` Ralf Baechle
2007-07-16 17:38 ` Andrew Sharp
2007-07-17 14:01 ` Kumba
2007-07-19 18:58 ` Andrew Sharp
2007-07-19 22:26 ` Shane McDonald
2007-07-17 7:54 ` Gleb O. Raiko
2007-07-17 9:04 ` Sergey Rogozhkin
2007-07-17 10:14 ` Ralf Baechle
2007-07-17 12:27 ` Ralf Baechle
2007-09-17 23:04 ` Steve Graham
2007-09-18 8:52 ` Ralf Baechle
2007-09-17 23:20 ` David Daney
2007-09-18 8:47 ` Ralf Baechle
2007-07-02 14:34 ` Maciej W. Rozycki
2007-09-21 6:27 ` Sagar Borikar
2007-09-21 13:47 ` Ralf Baechle [this message]
2007-09-22 3:20 ` Steve Graham
2007-09-24 11:58 ` Ralf Baechle
2007-09-26 17:06 ` Steve Graham
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