From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) by kanga.kvack.org (Postfix) with ESMTP id DF9596B0A3B for ; Fri, 16 Nov 2018 10:55:07 -0500 (EST) Received: by mail-pg1-f198.google.com with SMTP id h9so10571713pgm.1 for ; Fri, 16 Nov 2018 07:55:07 -0800 (PST) Received: from mga17.intel.com (mga17.intel.com. [192.55.52.151]) by mx.google.com with ESMTPS id i69si29709701pgc.538.2018.11.16.07.55.05 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 16 Nov 2018 07:55:06 -0800 (PST) Date: Fri, 16 Nov 2018 08:51:41 -0700 From: Keith Busch Subject: Re: [PATCH 0/7] ACPI HMAT memory sysfs representation Message-ID: <20181116155141.GA14630@localhost.localdomain> References: <20181114224902.12082-1-keith.busch@intel.com> <1ed406b2-b85f-8e02-1df0-7c39aa21eca9@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1ed406b2-b85f-8e02-1df0-7c39aa21eca9@arm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Anshuman Khandual Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams On Fri, Nov 16, 2018 at 11:57:58AM +0530, Anshuman Khandual wrote: > On 11/15/2018 04:19 AM, Keith Busch wrote: > > This series provides a new sysfs representation for heterogeneous > > system memory. > > > > The previous series that was specific to HMAT that this series was based > > on was last posted here: https://lkml.org/lkml/2017/12/13/968 > > > > Platforms may provide multiple types of cpu attached system memory. The > > memory ranges for each type may have different characteristics that > > applications may wish to know about when considering what node they want > > their memory allocated from. > > > > It had previously been difficult to describe these setups as memory > > rangers were generally lumped into the NUMA node of the CPUs. New > > platform attributes have been created and in use today that describe > > the more complex memory hierarchies that can be created. > > > > This series first creates new generic APIs under the kernel's node > > representation. These new APIs can be used to create links among local > > memory and compute nodes and export characteristics about the memory > > nodes. Documentation desribing the new representation are provided. > > > > Finally the series adds a kernel user for these new APIs from parsing > > the ACPI HMAT. > > Not able to see the patches from this series either on the list or on the > archive (https://lkml.org/lkml/2018/11/15/331). The send-email split the cover-letter from the series, probably something I did. Series followed immediately after: https://lkml.org/lkml/2018/11/15/332 > IIRC last time we discussed > about this and the concern which I raised was in absence of a broader NUMA > rework for multi attribute memory it might not a good idea to settle down > and freeze sysfs interface for the user space.