From: Randy Dunlap <randy.dunlap@oracle.com>
To: tanaka <tanaka_hideo@yahoo.co.jp>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Please teach me X86 I/O port 0x61
Date: Thu, 15 Jul 2010 09:07:46 -0700 [thread overview]
Message-ID: <20100715090746.fdfce533.randy.dunlap@oracle.com> (raw)
In-Reply-To: <20100715150036.22283.qmail@web100113.mail.kks.yahoo.co.jp>
On Fri, 16 Jul 2010 00:00:36 +0900 (JST) tanaka wrote:
> Dear all.
>
> I investigate about NMI kernel messages.
> Linux kernel read 0x61 address using inb(61h).
>
> I search a amd opteron cpu following manuals.
> but I do not find explanation of 0x61 address.
>
> http://support.amd.com/us/psearch/Pages/psearch.aspx?type=2.1&product=2.1.4&contentType=Tech+Doc+Processor&ostype=&keywords=&items=20
>
> Could you teach me a 0x61 address of X86 arch >
Hi,
IO port 0x61 (NMI Status & Control register) is not CPU-specific on x86.
It's more of a platform thing.
Intel describes it in ICH (chipset) specs, e.g., ICH7 spec,
section 10.7.1. Please try that and see if it answers your questions.
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
next prev parent reply other threads:[~2010-07-15 16:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-15 15:00 Please teach me X86 I/O port 0x61 tanaka
2010-07-15 16:07 ` Randy Dunlap [this message]
2010-07-22 17:57 ` tanaka
2010-07-22 18:21 ` Randy Dunlap
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