linux-kernel - Re: [PATCH v2 2/2] mce: acpi/apei: Add a boot option to disable ff mode for corrected errors

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Message-ID: <20130621072725.GB22006@pd.tnic>
Date:	Fri, 21 Jun 2013 09:27:25 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
	"ananth@...ibm.com" <ananth@...ibm.com>,
	"masbock@...ux.vnet.ibm.com" <masbock@...ux.vnet.ibm.com>,
	"lcm@...ux.vnet.ibm.com" <lcm@...ux.vnet.ibm.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	Robert Richter <rric@...nel.org>
Subject: Re: [PATCH v2 2/2] mce: acpi/apei: Add a boot option to disable ff
 mode for corrected errors

On Thu, Jun 20, 2013 at 10:11:27PM +0000, Luck, Tony wrote:
> > - Two, the Generic Error Data Entry (aka UEFI Section Descriptor) has a 
> > flag which indicates 'Error Threshold Exceeded'. From the UEFI spec, it 
> > looks like we could consider this as an indication to offline the page; 
> > though I am not sure if/how this relates to the threshold value above.
> 
> This one sounds to make sense ... the flag description sounds exactly what
> we want - I won't feel embarrassed explaining to people why Linux takes
> action when it sees a record like this.

Yep, and firmware can set that flag when it wants to, so decision when
to offline a page is left to the platform.

-- 
Regards/Gruss,
    Boris.

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