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Date: Fri, 17 Jun 2011 02:34:42 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Huang Ying <ying.huang@intel.com>
Cc: Len Brown <lenb@kernel.org>,
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        Andi Kleen <andi@firstfloor.org>, "Luck, Tony" <tony.luck@intel.com>,
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Subject: Re: [PATCH] ACPI, APEI, Add APEI _OSC support
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On Fri, Jun 17, 2011 at 08:57:09AM +0800, Huang Ying wrote:
> On 06/16/2011 09:57 AM, Matthew Garrett wrote:
> > Yeah, this is going to be a problem. We have the HEST available at this 
> > point so we ought to be able to parse it, though. I'll take a look 
> > tomorrow.
> 
> We can check the HEST table before _OSC evaluating.  But it is much
> harder to check software part, because we have implemented GHES support
> (Generic Hardware Error Source, the handler of firmware first mode
> hardware error notification) as device driver and module.

If the kernel has been configured with support for the feature then I 
think we ought to be able to assume that the kernel will support it at 
runtime.

> So I think we can do that in 2 steps.  At first, we just enable WHEA
> UUID, because that is easier to do.  Then we find a way to implement
> "APEI bit" in generic _OSC call.  Do you think that is a good idea?

I'm fine with that, providing that GHES isn't disabled purely because 
the WHEA UUID call wasn't successful.

-- 
Matthew Garrett | mjg59@srcf.ucam.org
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