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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Olof Johansson <olof@lixom.net>
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] [3/9] pasemi: Machine check handler
Date: Mon, 05 Feb 2007 10:49:57 +1100	[thread overview]
Message-ID: <1170632998.2620.50.camel@localhost.localdomain> (raw)
In-Reply-To: <20070202045508.119282000@lixom.net>>

On Thu, 2007-02-01 at 22:54 -0600, Olof Johansson wrote:
> plain text document attachment (pasemi-machine-check)
> Print out decoded machine check information on PA6T.
> 
> 
> Signed-off-by: Olof Johansson <olof@lixom.net>

Not specific to your patch, but in general, Machine Check might happen
while MSR:EE is off... which means the kernel might dislike printk being
called from the MC handler under some circumstances (for example,
re-entering printk itself in places it doesn't expect to be).

Might be worth, when the MC is recoverable, to try to "defer" the
printout to some real irq or timer irq 

Ben.

  reply	other threads:[~2007-02-04 23:50 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-02  4:54 [PATCH] [0/9] PA Semi patches Olof Johansson
2007-02-02  4:54 ` [PATCH] [1/9] pasemi: Default root device Olof Johansson
2007-02-02 22:28   ` Geoff Levand
2007-02-04 22:18     ` Olof Johansson
2007-02-04 22:37       ` Olof Johansson
2007-02-02  4:54 ` [PATCH] [2/9] pasemi: UART udbg support Olof Johansson
2007-02-02  4:54 ` [PATCH] [3/9] pasemi: Machine check handler Olof Johansson
2007-02-04 23:49   ` Benjamin Herrenschmidt [this message]
2007-02-05  4:19     ` Olof Johansson
2007-02-02  4:54 ` [PATCH] [4/9] pasemi: Idle loops Olof Johansson
2007-02-03  8:27   ` Arnd Bergmann
2007-02-04 22:25     ` Olof Johansson
2007-02-02  4:54 ` [PATCH] [5/9] pasemi: Implement restart Olof Johansson
2007-02-02  6:07   ` Kumar Gala
2007-02-02 18:46     ` Olof Johansson
2007-02-02  4:54 ` [PATCH] [6/9] pasemi: SMP timebase sync Olof Johansson
2007-02-02  4:54 ` [PATCH] [7/9] pasemi: Configure DMA controller interrupts Olof Johansson
2007-02-04 23:53   ` Benjamin Herrenschmidt
2007-02-05  4:52     ` Olof Johansson
2007-02-02  4:54 ` [PATCH] [8/9] pasemi: iommu support Olof Johansson
2007-02-02  4:54 ` [PATCH] [9/9] pasemi: defconfig Olof Johansson

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