linux-kernel - Re: [PATCH v3 1/3] mce: acpi/apei: Honour Firmware First for MCA banks listed in APEI HEST CMC

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Message-ID: <20130701224555.GM23515@pd.tnic>
Date:	Tue, 2 Jul 2013 00:45:55 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:	tony.luck@...el.com, ananth@...ibm.com, masbock@...ux.vnet.ibm.com,
	lcm@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, ying.huang@...el.com
Subject: Re: [PATCH v3 1/3] mce: acpi/apei: Honour Firmware First for MCA
 banks listed in APEI HEST CMC

On Mon, Jul 01, 2013 at 09:08:47PM +0530, Naveen N. Rao wrote:
> The Corrected Machine Check structure (CMC) in HEST has a flag which can be
> set by the firmware to indicate to the OS that it prefers to process the
> corrected error events first. In this scenario, the OS is expected to not
> monitor for corrected errors (through CMCI/polling). Instead, the firmware
> notifies the OS on corrected error events through GHES.
> 
> Linux already has support for GHES. This patch adds support for parsing CMC
> structure and to disable CMCI/polling if the firmware first flag is set.
> 
> Further, the list of machine check bank structures at the end of CMC is used
> to determine which MCA banks function in FF mode, so that we continue to
> monitor error events on the other banks.
> 
> 
> Signed-off-by: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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