From: Guenter Roeck <guenter.roeck@ericsson.com>
To: David Daney <ddaney@caviumnetworks.com>
Cc: 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: Fri, 29 Jan 2010 14:19:08 -0800 [thread overview]
Message-ID: <20100129221908.GA16558@ericsson.com> (raw)
In-Reply-To: <4B6343B9.2010105@caviumnetworks.com>
On Fri, Jan 29, 2010 at 03:23:21PM -0500, David Daney wrote:
...
> > To follow up on this - does Octeon have a fixed VM size limit ?
>
> Yes. But it is larger than SB1's 44 bits. For Octeon it is 49 bits.
>
>
> > And when you run your tests with larger page sizes, do you have IPV6 enabled ?
>
> Yes.
>
> But at 16K pages the VM size is 47 bits, so it is under the limit.
>
> At 64K pages I am using 2-level page tables for 42 bits of VM space
> which is again under the limit.
>
> On SB1 and 3-level tables, you will always exceed the limit for both 16K
> (47 bits) and 64K (55 bits) page sizes.
>
Ok, based on this info I'll send out a proposed patch shortly.
Guenter
next prev parent reply other threads:[~2010-01-29 22:17 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
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 [this message]
2010-01-29 18:24 ` Guenter Roeck
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