linux-kernel - Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Reported regressions from 2.6.24)

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Date:	Tue, 25 Mar 2008 19:32:55 +0100
From:	Thomas Meyer <thomas@...3r.de>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Stefan Richter <stefanr@...6.in-berlin.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Natalie Protasevich <protasnb@...il.com>
Subject: Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Reported
 regressions from 2.6.24)

Ingo Molnar schrieb:
> * Ingo Molnar <mingo@...e.hu> wrote:
>
>   
>> 64-bit ioremaps never worked on 32-bit, so we are in totally 
>> unchartered waters now - but due to the unification we have a 
>> realistic chance to make them work. At minimum we need the fix below 
>> in addition to Linus' patch - does it make any difference?
>>     
>
> could you please try x86.git/latest:
>
>   http://people.redhat.com/mingo/x86.git/README
>
> which has all the fixes and debug patches integrated (no extra patching 
> should be needed). If it still doesnt work then please send the new 
> dmesg and /sys/kernel/debug/kernel_page_tables dump.
>
> head 0fef904c33841be92f or later.
>
> 	Ingo
>
>   
The kernel boots, but hangs at "populating dev tree with devices usings 
uevents". After removing both firewire drivers (ohci1394 and 
firewire_ohci) the system comes up correctly.

See attached file.

Modprobing either ohci1394 or firewire_ohci seems to lock up the system.

mfg
thomas


View attachment "cfs-debug-info-2008.03.25-19.12.25" of type "text/plain" (254266 bytes)