linux-kernel - Re: [PATCH v4 03/18] x86, intel_cacheinfo: Enable cache id in x86

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Date:   Mon, 17 Oct 2016 12:48:18 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Fenghua Yu <fenghua.yu@...el.com>
cc:     "H. Peter Anvin" <h.peter.anvin@...el.com>,
        Ingo Molnar <mingo@...e.hu>, Tony Luck <tony.luck@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Stephane Eranian <eranian@...gle.com>,
        Borislav Petkov <bp@...e.de>,
        Dave Hansen <dave.hansen@...el.com>,
        Nilay Vaish <nilayvaish@...il.com>, Shaohua Li <shli@...com>,
        David Carrillo-Cisneros <davidcc@...gle.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Sai Prakhya <sai.praneeth.prakhya@...el.com>,
        Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH v4 03/18] x86, intel_cacheinfo: Enable cache id in x86

On Fri, 14 Oct 2016, Fenghua Yu wrote:

> Subject: x86, intel_cacheinfo: Enable cache id in x86

That should be:

  x86/intel_cacheinfo: Enable cache id in cache info

> Cache id is retrieved from APIC ID and CPUID leaf 4 on x86.
> 
> For more details see the section on "Cache ID Extraction Parameters" in
> "Intel 64 Architecture Processor Topology Enumeration" at
> https://software.intel.com/sites/default/files/63/1a/Kuo_CpuTopology_rc1.rh1.final.pdf

That link is going to be stale before this hits Linus tree.

> Also "Intel 64 and IA-32 Architectures Software Developer's Manual" volume 2,
> table 3-18 "information Returned by CPUID Instruction" at

   Table 3-18 FADD/FADDP/FIADD Results ...

The correct one is:

   Table 3-8 Information Returned by CPUID Instruction ...

> http://www.intel.com/sdm

So can we please just say:

  For more details please see the documentation of the CPUID instruction in
  the "Intel 64 and IA-32 Architectures Software Developer's Manual".

and be done with it?

Thanks,

	tglx