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[192.55.52.136]) by mx.google.com with ESMTPS id r35si1899753pgl.379.2019.02.22.10.13.15 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Feb 2019 10:13:15 -0800 (PST) Received-SPF: pass (google.com: domain of keith.busch@intel.com designates 192.55.52.136 as permitted sender) client-ip=192.55.52.136; Authentication-Results: mx.google.com; spf=pass (google.com: domain of keith.busch@intel.com designates 192.55.52.136 as permitted sender) smtp.mailfrom=keith.busch@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Feb 2019 10:13:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,400,1544515200"; d="scan'208";a="136443818" Received: from unknown (HELO localhost.localdomain) ([10.232.112.69]) by orsmga002.jf.intel.com with ESMTP; 22 Feb 2019 10:13:13 -0800 Date: Fri, 22 Feb 2019 11:13:17 -0700 From: Keith Busch To: Brice Goglin Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams Subject: Re: [PATCHv6 06/10] node: Add memory-side caching attributes Message-ID: <20190222181316.GE10237@localhost.localdomain> References: <20190214171017.9362-1-keith.busch@intel.com> <20190214171017.9362-7-keith.busch@intel.com> <16221be9-2f60-3a39-fd6c-5299cd94dc02@inria.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <16221be9-2f60-3a39-fd6c-5299cd94dc02@inria.fr> User-Agent: Mutt/1.9.1 (2017-09-22) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Feb 22, 2019 at 11:22:12AM +0100, Brice Goglin wrote: > Le 14/02/2019 à 18:10, Keith Busch a écrit : > > +What: /sys/devices/system/node/nodeX/memory_side_cache/indexY/associativity > > +Date: December 2018 > > +Contact: Keith Busch > > +Description: > > + The caches associativity: 0 for direct mapped, non-zero if > > + indexed. > > > Should we rename "associativity" into "indexing" or something else? > > When I see "associativity" that contains 0, I tend to interpret this as > the associativity value itself, which would mean fully-associative here > (as in CPU-side cache "ways_of_associativity" attribute), while actually > 0 means direct-mapped (ie 1-associative) with yout semantics. > > Brice Yes, that's a good suggestion.