From: Ralf Baechle <ralf@linux-mips.org>
To: Kumba <kumba@gentoo.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Florian Lohoff <flo@rfc822.org>,
linux-mips@linux-mips.org, debian-mips@lists.debian.org
Subject: Re: Tester with IP27/IP30 needed
Date: Tue, 22 Jan 2008 15:49:58 +0000 [thread overview]
Message-ID: <20080122154958.GA29108@linux-mips.org> (raw)
In-Reply-To: <479609A6.2020204@gentoo.org>
On Tue, Jan 22, 2008 at 10:20:06AM -0500, Kumba wrote:
> No effect on Octane R14000A, as far as lockups. Spikes the CPU usage in 'ps
> aux', but that's about it.
So far it seems R12000 and R14000 are unaffected.
> If I can get my plucky IP32 R10K to boot again soon, I may try it there for
> kicks and giggles. Maybe we're also seeing a side effect of the R10K's spec
> exec knocking the non-cache-coherent machines out?
>
> Also, tried building the code with the R10K cache barrier on to see if anything
> else changes? Generally reserved for kernel stuff, but Peter once speculated
> userland might have a use for it.
It's a cache instruction so priviledged which means userspace can't execute
it. It's also entirely unclear if a cache barrier instruction would make a
difference at all.
Ralf
next prev parent reply other threads:[~2008-01-22 15:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-15 11:24 Tester with IP27/IP30 needed Thomas Bogendoerfer
2008-01-15 11:27 ` Florian Lohoff
2008-01-17 0:40 ` Thomas Bogendoerfer
2008-01-17 8:27 ` Florian Lohoff
2008-01-17 10:00 ` Thomas Bogendoerfer
2008-01-17 15:10 ` Ralf Baechle
2008-01-19 19:12 ` Thomas Bogendoerfer
2008-01-17 11:59 ` Ralf Baechle
2008-01-22 15:20 ` Kumba
2008-01-22 15:49 ` Ralf Baechle [this message]
2008-01-26 3:12 ` Kumba
2008-01-26 14:39 ` Thomas Bogendoerfer
2008-02-02 22:08 ` Kumba
2008-02-03 2:16 ` Ralf Baechle
2008-02-03 6:27 ` Florian Lohoff
2008-02-05 7:11 ` Kumba
2008-02-05 12:22 ` Thiemo Seufer
2008-02-06 3:25 ` Kumba
2008-02-06 8:56 ` Florian Lohoff
2008-02-06 14:22 ` Ralf Baechle
2008-02-08 17:23 ` Florian Lohoff
2008-02-08 19:05 ` Thiemo Seufer
2008-02-08 19:29 ` Ralf Baechle
2008-02-07 5:30 ` Kumba
2008-02-05 15:23 ` Ralf Baechle
2008-01-23 8:47 ` peter fuerst
2008-01-15 13:11 ` Ralf Baechle
2008-01-15 13:53 ` Ralf Baechle
2008-01-15 18:18 ` Ralf Baechle
2008-01-16 16:03 ` Ralf Baechle
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