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: <51C482CB.9040700@linux.vnet.ibm.com>
Date:	Fri, 21 Jun 2013 22:13:55 +0530
From:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:	Borislav Petkov <bp@...en8.de>, "Luck, Tony" <tony.luck@...el.com>
CC:	"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 06/21/2013 12:57 PM, Borislav Petkov wrote:
> 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.
>

Ok, I will work towards a patch which does this.

Thanks,
Naveen

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