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From: Francois Wellenreiter <Francois.Wellenreiter@Ext.Bull.Net>
To: linux-ia64@vger.kernel.org
Subject: Re: Abnormal behaviour towards "INIT" interrupt management
Date: Wed, 31 Mar 2004 06:43:01 +0000	[thread overview]
Message-ID: <406A6875.7030500@Ext.Bull.Net> (raw)
In-Reply-To: <40691B80.9070309@Ext.Bull.Net>

>>>What I've noticed using traces (and further an ITP tool) is that for 
>>>each processor the "ia64_monarch_init_handler" is ever called. :-(
>>
>>Are you saying that more than one processor calls
>>ia64_monarch_init_handler()?  If so, I think something
>>is broken.
> 
> 
> Or are you saying that NO processor gets to ia64_monarch_init_handler?

All the processors call the "ia64_monarch_init_handler",
the result is that the same trace appears many times (1 per CPU in fact)
and a kernel oops occurs (I think it is due to a concurrent access
to the same stack without any lock mechanism).

> Just a sanity check ... when you set the ITP breakpoint to catch
> the entry ... you did set it at the *physical* address of this function?

Yes, using Hardware breakpoints. When managing INIT interrupt, SAL calls
the physical address of my function.



  parent reply	other threads:[~2004-03-31  6:43 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-03-30  7:02 Abnormal behaviour towards "INIT" interrupt management Francois Wellenreiter
2004-03-30 15:19 ` Bjorn Helgaas
2004-03-30 18:52 ` Luck, Tony
2004-03-31  6:37 ` Francois Wellenreiter
2004-03-31  6:43 ` Francois Wellenreiter [this message]
2004-03-31 19:44 ` Bjorn Helgaas
2004-04-01  3:23 ` Jim Garlick
2004-04-01  6:26 ` Francois Wellenreiter

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