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 520EF1099B41 for ; Fri, 20 Mar 2026 22:14:04 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B95966B00DF; Fri, 20 Mar 2026 18:14:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B6CD46B00E2; Fri, 20 Mar 2026 18:14:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AAAEC6B00E3; Fri, 20 Mar 2026 18:14:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 97DE66B00DF for ; Fri, 20 Mar 2026 18:14:03 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 6364B1B7B6D for ; Fri, 20 Mar 2026 22:14:03 +0000 (UTC) X-FDA: 84567845166.03.6BF046B Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf02.hostedemail.com (Postfix) with ESMTP id C55EB80003 for ; Fri, 20 Mar 2026 22:14:01 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="X/uB2w7D"; spf=pass (imf02.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@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=1774044841; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=u2dYd1Esmr7zz0j2jla0IIVHfnreMBmG+4nWX8l/9Jk=; b=yXc8fBQTFvTkbcmIn76kuI+OhA4qKKcITdeQNP/s8JMwsbKIh4mNzffPI5cW6hGrDWzI5J IzsMRjuVfgvxdnEnliJGINTErMQKbmN6Kgj4rY5L4b3Y2F86GW+vc5oFLrr+JPh3lHaYCn N9G4UF1Laldc3E3YfLL0eQ6+kihl5bk= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="X/uB2w7D"; spf=pass (imf02.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1774044841; a=rsa-sha256; cv=none; b=6uJP8JtHnj3RnsOyfSqakhNn4pISfQbCRMDSeIwnfJKD6ArLOPQRUZkMWYTrAe55+o7M4K 7B6sZwl9cg2PllNmXYpOYp+3rEnvSLdNoIc8iFaaupOp+qvbCSbdZRXrwyBtER6a/VjpWr jpWnMjyU8nO6idD5NVgoJznH3zeJTgk= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 1777460142; Fri, 20 Mar 2026 22:14:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22BC5C2BC87; Fri, 20 Mar 2026 22:13:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774044840; bh=mvXhiGTn6tZZYnNOOoiRbg2GgcaMPiyLXwyjxmdxo84=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=X/uB2w7DSbxaqWWZI0SFouAEqRYt5ziW1QewNaYsFL+YJCSIra6vwkHxw1G9GGCh4 BIg7cd7GsHXYGOKUNs0MzTHjHG60jQ69wHz78GZiVzLl9CYVKK8mKlaJBjYPupxasS g+bH6a1n9UMg+IiOGJihFzUSK7KfYpQoRfoiR5xltvNtvoFnAacVxiUXKk85xWL8c9 muE+/XC1RcriPyCEgQuzM4jbHkE9K1Cv3yzKRDknP/UJEsuMIMFvejFsVGjnmVpp4O pbmnmWeUm1R8FQmqFTejFLSSs151sXs6nnngVkaakFF4+Yn2aN1kiPBhn3e/pwFWuy w+3VzFUlJqhAg== From: "David Hildenbrand (Arm)" Date: Fri, 20 Mar 2026 23:13:36 +0100 Subject: [PATCH v2 04/15] mm/Kconfig: make CONFIG_MEMORY_HOTPLUG depend on CONFIG_SPARSEMEM_VMEMMAP MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260320-sparsemem_cleanups-v2-4-096addc8800d@kernel.org> References: <20260320-sparsemem_cleanups-v2-0-096addc8800d@kernel.org> In-Reply-To: <20260320-sparsemem_cleanups-v2-0-096addc8800d@kernel.org> To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Oscar Salvador , Axel Rasmussen , Yuanchu Xie , Wei Xu , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Sidhartha Kumar , linux-mm@kvack.org, linux-cxl@vger.kernel.org, linux-riscv@lists.infradead.org, "David Hildenbrand (Arm)" X-Mailer: b4 0.13.0 X-Rspam-User: X-Rspamd-Queue-Id: C55EB80003 X-Rspamd-Server: rspam08 X-Stat-Signature: q96pe7sa9odknz5ixtrkfgaomb4pae17 X-HE-Tag: 1774044841-365625 X-HE-Meta: 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 TdDQHQlA gYANyhHb3W5QmDxo4Oyrt+4MmGOFFNzwv3qopyMSIe/cHGa/RwPvlXaXIEirvuWNqk/JmJP2ba1MmguIEXG6hfphbTrHrIP1ZaEO7fgMMspFM6BZACkDBw93VzTMg8trdzlJTfSYAGeekHwpsoKKyTUuPzTGJuCU1CTHuOivOeurdk5ZuSzv1S3obPBa2GuJyC419mDfHY/D54CEvaFvyE6sCyL60s/QDzPCpNCVr2JUY9yZq0n2/Psxhcg2y0Cu2B94B Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Ever since commit f8f03eb5f0f9 ("mm: stop making SPARSEMEM_VMEMMAP user-selectable"), an architecture that supports CONFIG_SPARSEMEM_VMEMMAP (by selecting SPARSEMEM_VMEMMAP_ENABLE) can no longer enable CONFIG_SPARSEMEM without CONFIG_SPARSEMEM_VMEMMAP. Right now, CONFIG_MEMORY_HOTPLUG is guarded by CONFIG_SPARSEMEM. However, CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG is only enabled by * arm64: which selects SPARSEMEM_VMEMMAP_ENABLE * loongarch: which selects SPARSEMEM_VMEMMAP_ENABLE * powerpc (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE * riscv (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE * s390 with SPARSEMEM: which selects SPARSEMEM_VMEMMAP_ENABLE * x86 (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE So, we can make CONFIG_MEMORY_HOTPLUG depend on CONFIG_SPARSEMEM_VMEMMAP without affecting any setups. Reviewed-by: Lorenzo Stoakes (Oracle) Reviewed-by: Mike Rapoport (Microsoft) Signed-off-by: David Hildenbrand (Arm) --- mm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/Kconfig b/mm/Kconfig index ebd8ea353687..c012944938a7 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -472,7 +472,7 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE menuconfig MEMORY_HOTPLUG bool "Memory hotplug" select MEMORY_ISOLATION - depends on SPARSEMEM + depends on SPARSEMEM_VMEMMAP depends on ARCH_ENABLE_MEMORY_HOTPLUG depends on 64BIT select NUMA_KEEP_MEMINFO if NUMA -- 2.43.0