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From: "Pandruvada, Srinivas" <srinivas.pandruvada@intel.com>
To: "Raj, Ashok" <ashok.raj@intel.com>, "bp@suse.de" <bp@suse.de>
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Subject: Re: Dell XPS13: MCE (Hardware Error) reported
Thread-Topic: Dell XPS13: MCE (Hardware Error) reported
Thread-Index: AQHSZ5SNxL87/kvtWkm650Kdf2tNWaEq5S4A
Date: Thu, 5 Jan 2017 21:03:10 +0000
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On Thu, 2017-01-05 at 12:43 -0800, Raj, Ashok wrote:
> Hi Boris
> 
> 
> On Thu, Jan 05, 2017 at 09:31:47PM +0100, Borislav Petkov wrote:
> > 
> > On Thu, Jan 05, 2017 at 09:10:34PM +0100, Alexander Alemayhu wrote:
> > > 
> > > Not sure if it is related, but I am also seeing those messages on
> > > my
> > > MacBookPro11,3:
> > 
> > Yours look to me like thermal throttling MCEs. And TBH we whould
> > not issue those as actual MCEs because they are not - they *signal*
> > overheating condition only and should be handled differently.
> 
> That's right.. the thermal interrupts are being reported, that should
> have
> started running cpu's at lower frequencies via some thermald. 
> If that's not handled and the PCU starts enforcing trying to keep the
> temps 
> under control system starts logging MCE's. 
> 
> Ccing Srinivas who might be able to give a better pointer to check
> why 
> that's not happening.
I suggest trying with the following kernel command line, if your
getting notification to throttle from SMM before:

	intel_pstate=support_acpi_ppc

opensuse doesn't start thermald by default.

Thanks,
Srinivas