linux-kernel - Re: [PATCH 2/2] MCE, AMD: MCE decoding support for AMD Family 16h

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Date:	Tue, 18 Dec 2012 12:09:45 -0600
From:	Jacob Shin <jacob.shin@....com>
To:	Borislav Petkov <bp@...en8.de>,
	Doug Thompson <dougthompson@...ssion.com>,
	<linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] MCE, AMD: MCE decoding support for AMD Family 16h

On Tue, Dec 18, 2012 at 11:30:24AM -0600, Jacob Shin wrote:
> On Tue, Dec 18, 2012 at 06:19:15PM +0100, Borislav Petkov wrote:
> > On Mon, Dec 17, 2012 at 01:39:48PM -0600, Jacob Shin wrote:

> > > +/* internal error type */
> > > +const char * const uu_msgs[] = { "RESV", "RESV", "HWA", "RESV" };
> > > +EXPORT_SYMBOL_GPL(uu_msgs);
> > 
> > Seems like those aren't used anywhere?

> > > @@ -634,6 +727,10 @@ static void decode_mc6_mce(struct mce *m)
> > >  
> > >  static inline void amd_decode_err_code(u16 ec)
> > >  {
> > > +	if (INT_ERROR(ec)) {
> > > +		pr_emerg(HW_ERR "internal: %s\n", LL_MSG(ec));
> > > +		return;
> > > +	}
> > 
> > Is this correct? I'm just confirming because I don't have the internal
> > info anymore.
> > 
> > Uuh, hold on, maybe those otherwise unused uu_msgs above were meant to
> > be used here instead of the LL_MSG? IOW,
> 
> > 
> > 		pr_emerg(HW_ERR "internal: %s\n", UU_MSG(ec));
> > 
> > Right?
> 
> Ah, yes thats right, sorry about the typo. It looks like:
> 
> Error Code           Error Code Type        Description
> 0000 01UU 0000 0000  Internal Unclassified  UU = Internal Error Type
> 
> And the UU encoding is as is in the mce_amd.h file

I think I meant to say as in uu_msgs[] above. HWA stands for
"Hardware Assertion" ..

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