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[173.79.60.52]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-9081dd905a0sm6641656d6.44.2026.07.28.13.00.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jul 2026 13:00:05 -0700 (PDT) Date: Tue, 28 Jul 2026 15:59:59 -0400 From: Gregory Price To: "David Hildenbrand (Arm)" Cc: Matthew Wilcox , Andrew Morton , Bharata B Rao , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jonathan.Cameron@huawei.com, dave.hansen@intel.com, mgorman@techsingularity.net, mingo@redhat.com, peterz@infradead.org, raghavendra.kt@amd.com, riel@surriel.com, rientjes@google.com, sj@kernel.org, weixugc@google.com, ying.huang@linux.alibaba.com, ziy@nvidia.com, dave@stgolabs.net, nifan.cxl@gmail.com, xuezhengchu@huawei.com, yiannis@zptcorp.com, byungchul@sk.com, kinseyho@google.com, joshua.hahnjy@gmail.com, yuanchu@google.com, balbirs@nvidia.com, alok.rathore@samsung.com, shivankg@amd.com, donettom@linux.ibm.com Subject: Re: [PATCH v8 0/8] mm: Hot page tracking and promotion infrastructure Message-ID: References: <20260728054356.291998-1-bharata@amd.com> <20260728111401.b6d674baf8e56a27c55e0c52@linux-foundation.org> Precedence: bulk X-Mailing-List: linux-kernel@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: On Tue, Jul 28, 2026 at 09:20:32PM +0200, David Hildenbrand (Arm) wrote: > > The diffstat is scary, to say the least. And the x86 stuff certainly needs x86 > maintainer acks. > > So far there is no real review -- we're in v8 without a single tag. > > So this is far away from being mergeable. > > I'm afraid this will need a lot more discussions, and likely RFC would have been > still appropriate at this point. > No disagreement here, my lament of not being able to get fleet-scale data is more of a personal one, not a cry to merge. We're working on it. > It's a shame this work was going on for quite a while without feedback (blame me > if you want :) but there are only so many hours in a day), but the main problem > is that this work in particular was not perceived to be high or even medium > priority so far. > Should note that we hold a bi-weekly working group on this to discuss the design and micro-benchmarks - so it hasn't been developed in a complete vacuum. We (I) owe that group some explicit on-list reviews and testing data - that's my fault (life has been busy). ~Gregory