linux-kernel - Re: [PATCH 9/9] x86/intel_rdt: Intel haswell Cache Allocation enumeration

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Message-ID: <20150729163628.GZ25159@twins.programming.kicks-ass.net>
Date:	Wed, 29 Jul 2015 18:36:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Vikas Shivappa <vikas.shivappa@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, vikas.shivappa@...el.com,
	x86@...nel.org, hpa@...or.com, tglx@...utronix.de,
	mingo@...nel.org, tj@...nel.org, matt.fleming@...el.com,
	will.auld@...el.com, glenn.p.williamson@...el.com,
	kanaka.d.juvva@...el.com
Subject: Re: [PATCH 9/9] x86/intel_rdt: Intel haswell Cache Allocation
 enumeration

On Wed, Jul 01, 2015 at 03:21:10PM -0700, Vikas Shivappa wrote:
> +	/*
> +	 * Probe test for Haswell CPUs.

Maybe elucidate and say: Probe for Haswell Server parts.

As said before, probe and test mean roughly the same thing, and the
model test below makes the general 'Haswell CPUs' false, because there's
at least 3 other models that are also Haswell.

> +	 */
> +	if (c->x86 == 0x6 && c->x86_model == 0x3f)
> +		return cache_alloc_hsw_probe();
> +
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