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Date: Fri, 4 Dec 2015 10:16:10 -0800
From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
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        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        Hannes Reinecke <hare@suse.de>, jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH] x86/rapl: Do not load in a guest
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On Fri, 4 Dec 2015 19:04:26 +0100
Borislav Petkov <bp@alien8.de> wrote:

> > This is good for the first level RAPL detection. The only way is to
> > base detection on known CPU models.  
> 
> ...and yet Hannes sees it on a minnowboard. CCed.
> 
> The CPU model-based detection is ugly and does not always work, as
> you see.
CPU model detection is the first level checking. The error is about no
valid domains (e.g. counters not working). So the error on minnowboard
board could be a real problem if you expect to use RAPL.

Jacob