From: Guenter Roeck <guenter.roeck@ericsson.com>
To: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: David Daney <ddaney@caviumnetworks.com>,
Ralf Baechle <ralf@linux-mips.org>,
"linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
Subject: Re: Kernel crash in 2.6.32.6 / bcm1480 with 16k page size
Date: Sun, 31 Jan 2010 08:55:03 -0800 [thread overview]
Message-ID: <20100131165503.GA18523@ericsson.com> (raw)
In-Reply-To: <alpine.LFD.2.00.1001310907320.31764@eddie.linux-mips.org>
On Sun, Jan 31, 2010 at 04:10:10AM -0500, Maciej W. Rozycki wrote:
> On Fri, 29 Jan 2010, Guenter Roeck wrote:
>
> > > I suspect you are hitting a maximum valid address bits limit and getting
> > > the Address Exception. Limiting VMALLOC_END so that you don't hit the
> > > limit seems to be the solution. I don't have the manual for the sibyte,
> > > so I don't know what the limit is. The architecture specification
> > > doesn't state a fixed limit, although it tells what should happen when
> > > the limit is reached.
> > >
> > You mean there might be a CPU-specific limit ? I hope not - that would be quite messy.
>
> The size of the address space can be probed via CP0 registers (for MIPS
> architecture processors that is). No need to add any CPU dependencies
> (except from legacy 64-bit MIPS processors perhaps).
>
That would help. Do you happen to know which CP0 register(s) to look for ?
I browsed through the MIPS 5K and 20Kc manuals, but didn't find it.
Guenter
next prev parent reply other threads:[~2010-01-31 16:53 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-28 15:55 Kernel crash in 2.6.32.6 / bcm1480 with 16k page size Guenter Roeck
2010-01-29 13:24 ` Ralf Baechle
2010-01-29 15:12 ` Guenter Roeck
2010-01-29 17:11 ` David Daney
2010-01-29 18:06 ` Ralf Baechle
2010-01-29 18:21 ` Guenter Roeck
2010-01-30 2:05 ` Ralf Baechle
2010-01-30 21:34 ` Guenter Roeck
2010-01-31 3:19 ` Guenter Roeck
2010-01-29 18:39 ` Guenter Roeck
2010-01-29 18:56 ` David Daney
2010-01-29 19:25 ` Guenter Roeck
2010-01-29 19:28 ` David Daney
2010-01-29 19:58 ` Guenter Roeck
2010-01-31 9:10 ` Maciej W. Rozycki
2010-01-31 16:55 ` Guenter Roeck [this message]
2010-02-01 2:18 ` Ralf Baechle
2010-02-01 14:50 ` Maciej W. Rozycki
2010-02-01 15:26 ` Ralf Baechle
2010-02-01 23:11 ` Maciej W. Rozycki
2010-02-01 15:04 ` Guenter Roeck
2010-02-01 20:21 ` Guenter Roeck
2010-02-01 20:49 ` Ralf Baechle
2010-02-01 21:12 ` Guenter Roeck
2010-01-29 20:00 ` Guenter Roeck
2010-01-29 20:23 ` David Daney
2010-01-29 22:19 ` Guenter Roeck
2010-01-29 18:24 ` Guenter Roeck
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