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From: Ingo Molnar <mingo@elte.hu>
To: Don Zickus <dzickus@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>,
	Huang Ying <ying.huang@intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC 5/6] x86, NMI, Add support to notify hardware error with unknown NMI
Date: Tue, 14 Sep 2010 14:21:31 +0200	[thread overview]
Message-ID: <20100914122131.GF12425@elte.hu> (raw)
In-Reply-To: <20100913193655.GF26290@redhat.com>


* Don Zickus <dzickus@redhat.com> wrote:

> > > > At least on PCI-E it may be enough to simply dump all recent AER 
> > > > data.
> > > 
> > > This assumes AER is supported on the bridge?  Which for newer 
> > > chips is probably true, but I wasn't sure about older ones.
> > 
> > Today's servers should usually have AER at least.
> > 
> > For old systems you only can get the few bits in PCI space.
> > 
> > > How would I dump AER data from within the kernel?
> > 
> > Would need a buffer that is dumped for past events and reading the 
> > registers for not yet reported. Right now some infrastructure is 
> > needed.
> 
> Oh ok.

The proper approach would be not to add hacks to the NMI code but to 
implement southbridge drivers - which would also have NMI callbacks. 
These are unchartered waters, but variance in that space is reducing 
systematically so it would be worth a shot.

Thanks,

	Ingo

  parent reply	other threads:[~2010-09-14 12:21 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-10  2:51 [RFC 1/6] x86, NMI, Add symbol definition for NMI magic constants Huang Ying
2010-09-10  2:51 ` [RFC 2/6] x86, NMI, Add touch_nmi_watchdog to io_check_error delay Huang Ying
2010-09-10  2:51 ` [RFC 3/6] x86, NMI, Rename memory parity error to PCI SERR error Huang Ying
2010-09-13  1:02   ` Robert Richter
2010-09-13  2:02     ` Huang Ying
2010-09-16  8:18       ` Robert Richter
2010-09-17  0:08         ` Huang Ying
2010-09-17  9:14           ` Robert Richter
2010-09-19  0:20             ` Huang Ying
2010-09-20  8:00               ` Robert Richter
2010-09-20 12:59                 ` Borislav Petkov
2010-09-21  0:22                   ` Huang Ying
2010-09-21  6:37                     ` Borislav Petkov
2010-09-21 14:08                       ` Doug Thompson
2010-09-21 23:04   ` Maciej W. Rozycki
2010-09-23  5:37     ` huang ying
2010-09-29  0:26       ` Maciej W. Rozycki
2010-09-10  2:51 ` [RFC 4/6] x86, NMI, Rewrite NMI handler Huang Ying
2010-09-10 15:56   ` Don Zickus
2010-09-10 16:03     ` Andi Kleen
2010-09-10 18:29       ` Don Zickus
2010-09-13  2:09         ` Huang Ying
2010-09-13 14:04           ` Don Zickus
2010-09-14  5:12             ` Huang Ying
2010-09-14 13:37               ` Don Zickus
2010-09-13  1:16   ` Robert Richter
2010-09-10  2:51 ` [RFC 5/6] x86, NMI, Add support to notify hardware error with unknown NMI Huang Ying
2010-09-10 16:02   ` Don Zickus
2010-09-10 16:19     ` Andi Kleen
2010-09-10 18:40       ` Don Zickus
2010-09-13  2:19         ` Huang Ying
2010-09-13 14:11           ` Don Zickus
2010-09-13 15:24             ` Andi Kleen
2010-09-13 15:47               ` Don Zickus
2010-09-13 16:57                 ` Andi Kleen
2010-09-13 17:53                   ` Don Zickus
2010-09-13 18:07                     ` Andi Kleen
2010-09-13 18:23                       ` Don Zickus
2010-09-13 18:36                         ` Andi Kleen
2010-09-13 19:36                           ` Don Zickus
2010-09-13 20:49                             ` Andi Kleen
2010-09-13 21:25                               ` Valdis.Kletnieks
2010-09-14  7:48                                 ` Andi Kleen
2010-09-14 17:54                                   ` Valdis.Kletnieks
2010-09-14 12:21                             ` Ingo Molnar [this message]
2010-09-14 13:45                               ` Don Zickus
2010-09-14 19:34                               ` Cyrill Gorcunov
2010-09-15  9:29                                 ` Ingo Molnar
2010-09-10  2:51 ` [RFC 6/6] x86, NMI, Remove do_nmi_callback logic Huang Ying
2010-09-10 16:13   ` Don Zickus
2010-09-13  2:27     ` Huang Ying
2010-09-13  6:24       ` Ingo Molnar
2010-09-10 20:37 ` [RFC 1/6] x86, NMI, Add symbol definition for NMI magic constants Peter Zijlstra
2010-09-10 22:58   ` H. Peter Anvin
2010-09-11  8:50   ` Andi Kleen
2010-09-13  1:30     ` Robert Richter
2010-09-21 21:48 ` Don Zickus
2010-09-21 22:19   ` Andi Kleen
2010-09-22 16:07     ` Don Zickus
2010-09-23  9:29       ` huang ying
2010-09-23 14:16         ` Don Zickus
2010-09-24 11:50           ` huang ying
2010-09-24 14:29             ` Don Zickus
2010-09-23  9:51   ` huang ying
2010-09-14 14:31 [RFC 5/6] x86, NMI, Add support to notify hardware error with unknown NMI Andi Kleen
2010-09-14 15:17 ` Don Zickus
2010-09-14 17:40   ` Andi Kleen
2010-09-14 17:48 ` Ingo Molnar
2010-09-15  5:06   ` Huang Ying

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