linux-kernel - Re: [PATCH 10/10] x86/intel_rdt: Intel haswell Cache Allocation enumeration

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Date:	Tue, 16 Jun 2015 10:23:44 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Vikas Shivappa <vikas.shivappa@...el.com>
cc:	Peter Zijlstra <peterz@...radead.org>,
	Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org, hpa@...or.com,
	mingo@...nel.org, Matt Fleming <matt.fleming@...el.com>,
	"Juvva, Kanaka D" <kanaka.d.juvva@...el.com>,
	"Williamson, Glenn P" <glenn.p.williamson@...el.com>,
	"Auld, Will" <will.auld@...el.com>
Subject: Re: [PATCH 10/10] x86/intel_rdt: Intel haswell Cache Allocation
 enumeration

On Mon, 15 Jun 2015, Vikas Shivappa wrote:
> On Mon, 15 Jun 2015, Peter Zijlstra wrote:
> 
> > On Fri, Jun 12, 2015 at 11:17:17AM -0700, Vikas Shivappa wrote:
> > > +	/*
> > > +	 * Probe test for Haswell CPUs.
> > > +	 */
> > > +	if (c->x86 == 0x6 && c->x86_model == 0x3f)
> > > +		return hsw_probetest();
> > 
> > Firstly, isn't a probe already a test?
> 
> Will fix the name to hsw_probe
> 
> > 
> > Secondly, there's more HSW models:
> > 
> >        case 60: /* 22nm Haswell Core */
> >        case 63: /* 22nm Haswell Server */
> >        case 69: /* 22nm Haswell ULT */
> >        case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */
> > 
> > Is this really only HSW server,
> 
> Yes , this probe is only targeted at HSW servers as of now.
> 
> or should they all be listed?

you should know, whether they support that feature and need that quirk,

Thanks

	tglx

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