linux-kernel - Re: [PATCH v2] perf/x86: Fix HO/GO counting with SVM disabled

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Message-ID: <1330536271.11248.160.camel@twins>
Date:	Wed, 29 Feb 2012 18:24:31 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Joerg Roedel <joerg.roedel@....com>
Cc:	Avi Kivity <avi@...hat.com>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, joro@...tes.org, Ingo Molnar <mingo@...e.hu>,
	Stephane Eranian <eranian@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Gleb Natapov <gleb@...hat.com>,
	Robert Richter <robert.richter@....com>
Subject: Re: [PATCH v2] perf/x86: Fix HO/GO counting with SVM disabled

On Wed, 2012-02-29 at 18:05 +0100, Joerg Roedel wrote:
> Once northbridge counters are implemented for Fam15h this check can go
> away again. 

Nope, northbridge on fam15 is completely disjoint from the regular pmu
and should thus be a separate driver.

The only reason the old amd driver has them both is because how they
shared the registers so there is a shared resource to manage.
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