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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8AF3D109023F for ; Thu, 19 Mar 2026 16:18:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=n5KWTiJCMcaH4JlQWwOeL4gWSd0MErycqbXZQ8+Z8yc=; b=Cvdn2fYQ+QFAArgp/25BM+BK0s MqLNizkP5D+AXWGLTD0g20WUGXmOoy9P+k+6vQrhd3Yvr6xWkKN6eRP69Je6Z0sIzREBqkDwqu8g6 ysPDqyj5qib0CrGNA05rsQec+mG4HoOi0D5nxMWUDCfz2uHdCFrY+ra0g7JiYqIk4CB79KCpoaYE+ KFrMmS44ZkVVka3Xx66Mq6OuhlU2x8OCEBlHoElA7qQX1WjcC6KQQmYoxTSbe1ZBNnUiEaj69W3Jv 10KalVqgkjziI/6ahGo3cR+MRGP31Ii0n+44q4DdSY+pFfgS2t62IluokHHBdUkCMzlygu3Myeu6m SMbgdMSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w3G57-0000000B3bu-3oau; Thu, 19 Mar 2026 16:18:45 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w3G55-0000000B3b8-1OBJ; Thu, 19 Mar 2026 16:18:44 +0000 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260319_091843_405575_A02DE702 X-CRM114-Status: GOOD ( 16.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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.