From: Tony Mantler <nicoya@ubb.ca>
To: Andrew Morton <akpm@osdl.org>
Cc: Adrian Bunk <bunk@stusta.de>, linux-kernel@vger.kernel.org
Subject: Re: CONFIG_MK6 = lsof hangs unkillable
Date: Fri, 20 Jan 2006 16:47:15 -0600 [thread overview]
Message-ID: <8BD55BB2-E4C4-4E73-970B-0C4FD4EDD19B@ubb.ca> (raw)
In-Reply-To: <20060120144114.08f0c340.akpm@osdl.org>
On 20-Jan-06, at 4:41 PM, Andrew Morton wrote:
> Adrian Bunk <bunk@stusta.de> wrote:
>>
>> On Fri, Jan 20, 2006 at 04:44:07AM -0800, Andrew Morton wrote:
>>> Tony Mantler <nicoya@ubb.ca> wrote:
>>>>
>>>> I'm having trouble running lsof on 2.6.15.1 when the kernel is
>>>> compiled with CONFIG_MK6. When run as root, lsof will segfault, and
>>>> when run as a user lsof will hang unkillable.
>>>>
>>>> The same kernel, same machine, but compiled with CONFIG_MK7 runs
>>>> just
>>>> lsof just fine.
>>>
>>> That's creepy. CONFIG_MK6 hardly does anything. The main thing
>>> it does is
>>> feed `-march=k6' into the compiler. MK7 uses `-march=athlon'.
>>> ...
>>
>> CONFIG_MK7 results in a bigger L1_CACHE_SHIFT than CONFIG_MK6.
>>
>> AFAIR it wouldn't be the first time that changing L1_CACHE_SHIFT
>> would
>> hide a real bug visible with a different L1_CACHE_SHIFT.
>>
>
> hm, OK. Well that's something we can ask Tony to eliminate, by
> patching
> his Kconfig.cpu to make CONFIG_MK6 have the larger L1_CACHE_SHIFT
> (and/or
> vice versa).
Just tested that a few seconds ago, actually.
CONFIG_MK6 with CONFIG_L1_CACHE_SHIFT=6 results in the same crash.
I'm going to twiddle the configs again and see if I can make a
CONFIG_MK7 kernel with -march=k6
Cheers - Tony 'Nicoya' Mantler :)
--
Tony 'Nicoya' Mantler -- Master of Code-fu -- nicoya@ubb.ca
-- http://nicoya.feline.pp.se/ -- http://www.ubb.ca/ --
next prev parent reply other threads:[~2006-01-20 22:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-16 4:43 CONFIG_MK6 = lsof hangs unkillable Tony Mantler
2006-01-16 22:58 ` Tony Mantler
2006-02-17 1:45 ` Brandon Low
2006-01-20 12:44 ` Andrew Morton
2006-01-20 20:31 ` Adrian Bunk
2006-01-20 22:41 ` Andrew Morton
2006-01-20 22:47 ` Tony Mantler [this message]
2006-01-20 23:39 ` Tony Mantler
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