linux-kernel - Re: [PATCH 9/9] perf/x86: add syfs entry to disable HT bug workaround

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Message-ID: <20140605232949.GF16855@tassilo.jf.intel.com>
Date:	Thu, 5 Jun 2014 16:29:49 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Maria Dimakopoulou <maria.n.dimakopoulou@...il.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	Stephane Eranian <eranian@...gle.com>,
	Matt Fleming <matt@...sole-pimps.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>, Jiri Olsa <jolsa@...hat.com>,
	"Yan, Zheng" <zheng.z.yan@...el.com>
Subject: Re: [PATCH 9/9] perf/x86: add syfs entry to disable HT bug workaround

> As Stephane pointed out, the sysfs entry is optional and the workaround
> can be disabled only as root.
> 
> It is not absolutely necessary and it's not important.
> We will drop it in V2.

I would prefer to keep it. It's fairly complex and it's always good
to have a way to disable complex things in case something goes wrong.

-Andi
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