linux-kernel - RE: [PATCH 4/4] perf/x86/cqm: Support cqm/mbm only for perf events

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Date:	Mon, 25 Apr 2016 16:23:58 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Vikas Shivappa <vikas.shivappa@...ux.intel.com>
CC:	"Shankar, Ravi V" <ravi.v.shankar@...el.com>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	"Shivappa, Vikas" <vikas.shivappa@...el.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"Anvin, H Peter" <h.peter.anvin@...el.com>
Subject: RE: [PATCH 4/4] perf/x86/cqm: Support cqm/mbm only for perf events

>> Hence removing support for the parts which are broken rather than
>> pretending to support it and giving incorrect data.
>
> Uh what, how about attempt to fix it?

No hope to do that by 4.6 release ... so I suggested to Vikas that it would be better to disable
the feature now so users wouldn't be confused by the random numbers that they'll see if
they try to do this.

-Tony