From: olof@lixom.net (Olof Johansson)
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] [3/9] pasemi: Machine check handler
Date: Sun, 4 Feb 2007 22:19:19 -0600 [thread overview]
Message-ID: <20070205041919.GA4719@lixom.net> (raw)
In-Reply-To: <1170632998.2620.50.camel@localhost.localdomain>
On Mon, Feb 05, 2007 at 10:49:57AM +1100, Benjamin Herrenschmidt wrote:
> 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
Right. There are some other fixups to be done too that I will look at
later, for example all machine checks are still passed through a 32-bit
decoder after the ppc_md one. It can be quite confusing and should
probably be moved out to ppc_machdep handlers on all platforms instead.
I'll try to have some cleanup of the generic code for 2.6.22. Meanwhile
I think this can go in.
-Olof
next prev parent reply other threads:[~2007-02-05 4:11 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
2007-02-05 4:19 ` Olof Johansson [this message]
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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