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[173.79.56.208]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7c3e5511c63sm267058185a.113.2025.03.07.09.51.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Mar 2025 09:51:17 -0800 (PST) Date: Fri, 7 Mar 2025 12:51:15 -0500 From: Gregory Price To: Honggyu Kim 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, yunjeong.mun@sk.com Subject: Re: [PATCH 2/2 v6] mm/mempolicy: Don't create weight sysfs for memoryless nodes Message-ID: References: <20250226213518.767670-1-joshua.hahnjy@gmail.com> <20250226213518.767670-2-joshua.hahnjy@gmail.com> <9c0d8aa8-cac7-4679-aece-af88e8129345@sk.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9c0d8aa8-cac7-4679-aece-af88e8129345@sk.com> X-Rspamd-Queue-Id: C1AD1100003 X-Stat-Signature: 1f8sz5r3s98j47hw966q6nmuunyc8wbf X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1741369878-233836 X-HE-Meta: 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 XpjhdGrc nhm9/PTZlbxUJ6Dhepar5SNbUhVD3zyBSIEbKdc2xvVH8KEAxa3yxaHkmvAucyik4mF3m1+Rr21mKWKqU9NlbH9hWDgA1huzNH1zb3h9SpNazQmHfQ4BorYJcQpIzjAZeUMPv3Gc4yF4QlAaVtFgUAPJSb67YH9/lTL+Z/Iz+XL9jgW1v4KAZkXRa/IdauGXW0avtGQmeM6IyeMeiVYz9YAzvSU0edYDlLa8XOFBTecb5g6BCOjsmPFgav/xZExlX5GhO+4t2aS9GAUJcKEFGiisSefko59AP14OwvW0ou7wEJtuQM26l0RRvxtJgMQ/qHNNcYQVXhhv+z9IAvhb5nCpHQ1Fl7A6jIt19AmAPYF2d6IajVQb5p97N1ZeQMseV2O3lb7izElIvWLiAHaaNAh4g5Q== 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: List-Subscribe: List-Unsubscribe: On Fri, Mar 07, 2025 at 08:46:46PM +0900, Honggyu Kim wrote: > You can see more info below. > > $ cd /sys/devices/system/node > > $ ls -d node* > node0 node1 node2 node3 > > $ cat possible > 0-11 We're split across two threads now, but i'll add this context I'm basically asking whether there should be 12 nodes possible. It seems like there should only be 4 nodes possible - 2 for sockets, 2 for host bridges. Unless I'm misunderstanding, it should be the case that a given physical address can only be hosted by 1 numa node (proximity domain). So it *should* be the case that you either have 4 nodes possible or 10 nodes possible, not 12. But I could be missing a piece of context. > Which command do we need for this info specifically? My output doesn't > provide some useful info for that. > > $ acpidump -b > $ iasl -d * > $ cat cedt.dsl > ... > **** Unknown ACPI table signature [CEDT] > You probably have an old version of acpidump here, you might need to get a newer version that knows about the CEDT. You'll also want to get all the Memory Affinity entries from srat.dsl > Not sure about it. This must be fixed ASAP because current kernel is > broken on this issue and the fix should go into hotfix tree first. > I agree something is broken, I'm not convinced what is broken. > If you can think this is just a bandaid, but leaving it bleeding as is > not the right approach. > This affects userland, we shouldn't thrash on this. Lets get it right. ~Gregory