From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A2232109024C for ; Thu, 19 Mar 2026 16:18:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1634A6B0543; Thu, 19 Mar 2026 12:18:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0EDCE6B0544; Thu, 19 Mar 2026 12:18:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EF8056B0545; Thu, 19 Mar 2026 12:18:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id D84986B0543 for ; Thu, 19 Mar 2026 12:18:44 -0400 (EDT) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 922DA1A062C for ; Thu, 19 Mar 2026 16:18:44 +0000 (UTC) X-FDA: 84563320968.13.EA6B802 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf14.hostedemail.com (Postfix) with ESMTP id CEA43100014 for ; Thu, 19 Mar 2026 16:18:42 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=SAhj5GuC; spf=pass (imf14.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1773937123; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=n5KWTiJCMcaH4JlQWwOeL4gWSd0MErycqbXZQ8+Z8yc=; b=TkuQ73TdBAg05GGBdJPB+BTINQTe8mlvbE3wHVTwqEKshAAE1/oLwDJTuPhqN4CAOpLMIU MHn16BjWWf36HiPx7UbWRSnmz1fmSppknA/ulwSiwLp4mMndU1QTRhQ3r/H5+Z9uMZrRZB WEgRhKoIgHHlr7OSGrKVsWA4bS7ECvA= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773937123; a=rsa-sha256; cv=none; b=zWlZQq34WpoZ2Hdtv+PuD21JKG1TXf5skbqmiy/szw0FyKN0B0XilREGIc9iDwlemAAoSN rlk8yxynZxmcrB2NxeCc/g56oEIq2zJpjSqMcHTaRRYtdiV6OM4fDDZ+5cMuE/AsF/PCv0 hkWhx263GDrDqRgGU5kWtokWzZhboUQ= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=SAhj5GuC; spf=pass (imf14.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9CB5A44100; Thu, 19 Mar 2026 16:18:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F5EDC19424; Thu, 19 Mar 2026 16:18:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773937121; bh=+rJxXvh9jbY/cYu63rGxCHb0s8bdU5IuTtrr+qf/8ms=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SAhj5GuC0PfaoylzOpmZEg5wivkofnQ+GtRsdaeJOUJ4uAmHeX9yWUjJtJAn3it/L DtIYhs/uZLj/VchTSC0AmON6+W7EzTrZwPGqVuCyAhjCjaHPnhkABYQUeqprmOj1i/ R/FWq7IVvWU1IGMy9FTlbHxdCNuIq9kR2X6GzLnLDJQbozNo/mkx2YeXRGXNiMY0o7 vQpts1+55w++E8C9ighzin4xwksBwu0yd2u4NfBf4vlh8psPZ69uaMIHcyWDj4a0OE UwiaTPNnXiiVy+7V9ISLDkx2gH43hmidRMy6gz3GsbPkAVEku6PbjeRjw4rot/k9lf Rn92JSY6yNwyg== Date: Thu, 19 Mar 2026 18:18:22 +0200 From: Mike Rapoport To: "David Hildenbrand (Arm)" Cc: linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , 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: References: <20260319-config_migration-v1-0-42270124966f@kernel.org> <20260319-config_migration-v1-1-42270124966f@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260319-config_migration-v1-1-42270124966f@kernel.org> X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: CEA43100014 X-Stat-Signature: zh19at8nix9qdh77g6cfqb7k58abapcm X-Rspam-User: X-HE-Tag: 1773937122-457209 X-HE-Meta: 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 34dqv6BY fVxCCn5muYGvoXeDbRPSj/aOEXNjOvwwscu9lWMSOBggRjbYxUHv4V70DUCLxUAqEdPZLYVJ1imNg7FcNqS9ig3yod0AycK+AaYR0XvoN6O8oln6uOfJgMjiNQ2voULGS/XquRkeMfbtH4Ex/E81cJ7jBQwVWa8qiwj/btJmACTVMqbkp7Ysr93hrC4PN3SFm4HwYmiTlo0m/gd5a0H8yIYwxB2DLw0+TqYIiBYZT8F6it+t13+/jZWfcbE5iP27cNfZUTqjIHt0zgSgyIj9/PMEYIjqb4+h41+7URntAgoAOIj244MjnbWk8BeYaBxnSzT6qx1AxhxM5lKr88WNQhg30kVPE2XSlNK6myzbVCcVns5d6GOi5Tfpt36jrTt/2xgpoEeuJ2VQuA3M= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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) Reviewed-by: Mike Rapoport (Microsoft) > --- > arch/arm64/Kconfig | 1 - > arch/loongarch/Kconfig | 1 - > arch/powerpc/Kconfig | 1 - > arch/riscv/Kconfig | 1 - > arch/s390/Kconfig | 1 - > arch/x86/Kconfig | 1 - > mm/Kconfig | 9 +++------ > 7 files changed, 3 insertions(+), 12 deletions(-) > > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig > index edc927d9e85a..d01800962d84 100644 > --- a/arch/s390/Kconfig > +++ b/arch/s390/Kconfig > @@ -85,7 +85,6 @@ config S390 > select ARCH_32BIT_USTAT_F_TINODE > select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE > select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM Not really related, but s390 does not have anything but SPARSEMEM_VMEMMAP. > - select ARCH_ENABLE_MEMORY_HOTREMOVE > select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 > select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE > select ARCH_HAS_CC_CAN_LINK -- Sincerely yours, Mike.