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[173.79.56.208]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6eade35a8d9sm81204646d6.119.2025.03.19.07.54.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Mar 2025 07:54:28 -0700 (PDT) Date: Wed, 19 Mar 2025 10:54:26 -0400 From: Gregory Price To: Yunjeong Mun Cc: kernel_team@skhynix.com, Joshua Hahn , harry.yoo@oracle.com, ying.huang@linux.alibaba.com, gregkh@linuxfoundation.org, rakie.kim@sk.com, akpm@linux-foundation.org, rafael@kernel.org, lenb@kernel.org, dan.j.williams@intel.com, Jonathan.Cameron@huawei.com, dave.jiang@intel.com, horen.chuang@linux.dev, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, kernel-team@meta.com, Honggyu Kim Subject: Re: [PATCH 2/2 v6] mm/mempolicy: Don't create weight sysfs for memoryless nodes Message-ID: References: <20250319095630.1075-1-yunjeong.mun@sk.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250319095630.1075-1-yunjeong.mun@sk.com> On Wed, Mar 19, 2025 at 06:56:21PM +0900, Yunjeong Mun wrote: > > These are the root decoders that should map up directly with each CEDT > > CFMWS entry. > > > > 2 of them should have interleave settings. > > > > If you were to then program the endpoint and hostbridge decoders with > > the matching non-interleave address values from the other CEDT entries, > > you could bring each individual device online in its own NUMA node. > > > > I think this means that I can program the endpoint(=cxl_decoder_endpoint) > to map to the 8 CFMWS, and the hostbridge decoder (=cxl_decoder switch) to map > to another 2 CFMWS(cross-host bridge). > you can program any given endpoint decoders to map to either per-device CFMWS, or to the interleave CFMWS - decoders are flexible in this way. The existince of both sets gives you the option of how to program the topology - it's up to you. ~Gregory