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Peter Anvin" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Ying Huang , Alistair Popple , Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH 1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE Message-ID: <8ebdbdba-d0b5-4887-98e5-bc45f4565d51@lucifer.local> References: <20260319-config_migration-v1-0-42270124966f@kernel.org> <20260319-config_migration-v1-1-42270124966f@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Mar 19, 2026 at 11:24:27AM -0400, Gregory Price wrote: > On Thu, Mar 19, 2026 at 09:19:40AM +0100, David Hildenbrand (Arm) wrote: > > All architectures that select CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE also > > select CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG. So we can just remove > > CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE. > > > > For CONFIG_MIGRATION, make it depend on CONFIG_MEMORY_HOTREMOVE instead, > > and make CONFIG_MEMORY_HOTREMOVE select CONFIG_MIGRATION (just like > > CONFIG_CMA and CONFIG_COMPACTION already do). > > > > We'll clean up CONFIG_MIGRATION next. > > > > Signed-off-by: David Hildenbrand (Arm) > > HOTREMOVE has long been a thorn in my side, I appreciate you cleaning > this up. That is quite the HOTTAKE young Gregory! (It seems my pun crimes are continuing) > > Reviewed-by: Gregory Price > > ~Gregory Cheers, Lorenzo