From: Don Zickus <dzickus@redhat.com>
To: Huang Ying <ying.huang@intel.com>
Cc: Len Brown <lenb@kernel.org>,
linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>,
Tony Luck <tony.luck@intel.com>,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH] ACPI, APEI, Add APEI _OSC support
Date: Mon, 13 Jun 2011 10:50:12 -0400 [thread overview]
Message-ID: <20110613145012.GA1924@redhat.com> (raw)
In-Reply-To: <1306303538-30524-1-git-send-email-ying.huang@intel.com>
On Wed, May 25, 2011 at 02:05:38PM +0800, Huang Ying wrote:
> In APEI firmware first mode, hardware error is reported by hardware to
> firmware firstly, then firmware reports the error to Linux in a GHES
> error record via POLL/SCI/IRQ/NMI etc.
>
> This may result in some issues if OS has no full APEI support. So
> some firmware implementation will work in a back-compatible mode by
> default. Where firmware will only notify OS in old-fashion, without
> GHES record. For example, for a fatal hardware error, only NMI is
> signaled, no GHES record.
>
> To gain full APEI power on these machines, a special APEI _OSC needs
> to be evaluated to tell firmware that Linux has full APEI support.
> This patch add the APEI _OSC support.
Using an Intel box I have over at RedHat, I was able to use this patch to
get error injection (EINJ) to provide me a GHES record. Prior to this
patch I would just get unknown NMIs.
Talking with Matthew Garret, I guess it seems that uuids like this are
typical for ACPI.
I can't speak for all the ACPI parts, but the patch looks simple and
corret from my perspective.
Reviewed-and-Tested-by: Don Zickus <dzickus@redhat.com>
next prev parent reply other threads:[~2011-06-13 14:50 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-25 6:05 [PATCH] ACPI, APEI, Add APEI _OSC support Huang Ying
2011-06-13 14:50 ` Don Zickus [this message]
2011-06-14 6:33 ` Chen Gong
2011-06-14 12:11 ` Don Zickus
2011-06-14 14:52 ` Matthew Garrett
2011-06-15 3:53 ` Huang Ying
2011-06-15 12:17 ` Matthew Garrett
2011-06-16 0:40 ` Huang Ying
2011-06-16 1:38 ` Matthew Garrett
2011-06-16 1:55 ` Huang Ying
2011-06-16 1:57 ` Matthew Garrett
2011-06-17 0:57 ` Huang Ying
2011-06-17 1:34 ` Matthew Garrett
2011-06-17 1:40 ` Huang Ying
2011-06-17 1:42 ` Matthew Garrett
2011-06-17 1:53 ` Huang Ying
2011-06-16 9:00 ` Rafael J. Wysocki
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