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Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery

From Borislav Petkov <bp@suse.de>
Newsgroups linux.kernel
Subject Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery
Date 2016-10-11 19:10 +0200
Message-ID <sr8IW-Zh-29@gated-at.bofh.it> (permalink)
References (1 earlier) <spN3R-7BE-35@gated-at.bofh.it> <sq3rX-1p5-1@gated-at.bofh.it> <sq44F-1BM-11@gated-at.bofh.it> <sq5WN-2Ms-9@gated-at.bofh.it> <sr8IW-Zh-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, Oct 11, 2016 at 11:57:52AM -0500, Nilay Vaish wrote:
> I think we should go with Fenghua' suggestion on this.  Reading the
> code around the edits from this patch, it seems word 7 is not owned by
> anyone.  Both AMD and Intel seem to be using it.

No, this is wrong. The 0x0 CPUID leaf is owned by Intel. Let me quote my
reply to Dave from yesterday:

There's no reason to do anything really: the 0x0... CPUID leaf is owned
by Intel and 0x8... by AMD. So far, if AMD implements a feature in the
Intel leaf, it sets the respective CPUID bit. So a feature can be
present in multiple vendors. Thus you don't need the vendor name in the
define."

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
-- 

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Thread

[PATCH v3 00/18] Intel Cache Allocation Technology "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
  [PATCH v3 04/18] x86/intel_rdt: Feature discovery "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
    Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Nilay Vaish <nilayvaish@gmail.com> - 2016-10-08 19:20 +0200
      Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Fenghua Yu <fenghua.yu@intel.com> - 2016-10-08 20:00 +0200
        Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Borislav Petkov <bp@suse.de> - 2016-10-08 22:00 +0200
          Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Nilay Vaish <nilayvaish@gmail.com> - 2016-10-11 19:10 +0200
            Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Borislav Petkov <bp@suse.de> - 2016-10-11 19:10 +0200
      Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Dave Hansen <dave.hansen@intel.com> - 2016-10-10 18:10 +0200
        Re: [PATCH v3 04/18] x86/intel_rdt: Feature discovery Borislav Petkov <bp@suse.de> - 2016-10-10 18:20 +0200
  [PATCH v3 10/18] x86/intel_rdt: Build structures for each resource based on cache topology "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
    Re: [PATCH v3 10/18] x86/intel_rdt: Build structures for each  resource based on cache topology Nilay Vaish <nilayvaish@gmail.com> - 2016-10-10 00:00 +0200
  [PATCH v3 16/18] x86/intel_rdt: Add schemata file "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
  [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
    Re: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery Borislav Petkov <bp@suse.de> - 2016-10-09 13:50 +0200
      Re: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery Fenghua Yu <fenghua.yu@intel.com> - 2016-10-09 16:10 +0200
        Re: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery Borislav Petkov <bp@suse.de> - 2016-10-09 18:30 +0200
          Re: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery "Luck, Tony" <tony.luck@intel.com> - 2016-10-10 21:00 +0200
            Re: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery Borislav Petkov <bp@suse.de> - 2016-10-11 13:20 +0200
              RE: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery "Luck, Tony" <tony.luck@intel.com> - 2016-10-11 17:00 +0200
  [PATCH v3 13/18] x86/intel_rdt: Add mkdir to resctrl file system "Fenghua Yu" <fenghua.yu@intel.com> - 2016-10-08 01:50 +0200
    Re: [PATCH v3 13/18] x86/intel_rdt: Add mkdir to resctrl file system Nilay Vaish <nilayvaish@gmail.com> - 2016-10-10 20:00 +0200
  [RFC PATCH 19/18] x86/intel_rdt: Add support for L2 cache allocation "Luck, Tony" <tony.luck@intel.com> - 2016-10-08 02:00 +0200

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