From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 72B6340B360; Mon, 21 Sep 2026 20:01:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790020885; cv=none; b=FDv+57asQ/DwZjyKGYbky8MuqeHYUoliJWoA64gexca/9mxvlOg14TSz7Kbn6gjBd9++jGFfYFH0XtOLFJxtFZ8gvTwxlNPkVSKP4S0gRnq12Rts9JDJekXd/NaiXu3m7D8catcaGQrNdsUqckOFCQeI1UkVsBIcxYvbOC4IG+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790020885; c=relaxed/simple; bh=wS9y+w2lDfEszO4z/i/MtEKk8SGbU5ElVBcX2HbtZBQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=k3Mcc8qavhFQtY2UM9Ay+iPoGWZl+GLQ2Sr7AppCpw7/MPXnKRNOxR3U2NYH2OHDgxykd+uRJZYydStQvOu7zYFZ6wBSJmuEQIt14WsJk1nvw1RoxVvM9cDaQkzXkRun2jNgLpYBl9+5HHQrW5KdBp5S1KHM+YOSwssRiMlDSMs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ElKC23rv; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ElKC23rv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EB2A1F00893; Mon, 21 Sep 2026 20:01:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790020884; bh=Zg9d2/OMUG70qYu7TGJ+44plepcpjkecBMRJ5CVA3ok=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ElKC23rvyO1EuK7ppMEoqRlqUUtGVy9Pz99ZAK05LZl3sJAPS75pzvrKqOsPpMgSb FTEy/U2s99jvXjlClKts/61uXJrC7PNs5Epfa9Ml3BSUNVIX4qPifcyM5sI4VnmLVU cm+xh/89Ej/nrPYsQkBbXBOkGWgAAr/hPCA62KX48Znd7jlaSKZKGiH1v2oKkfeYf2 c+/9CXxxMqPaexpw+ptD0gfSJkdiuNr0xZWKWLEYmjtFZkOJocwym4L156YICwZmVM X9C4Hcqq/vLNsn0djO4/LCjOEZ/JH9R+fjbZRDcyxD00LGgKcMemXOFR+XDlM14Y6h oV0lnvOj+dCJQ== From: "David Hildenbrand (Arm)" Date: Mon, 21 Sep 2026 21:59:05 +0200 Subject: [PATCH v2 13/13] mm/memory_hotplug: drop CONFIG_HAVE_ARCH_PFN_VALID handling from pfn_to_online_page() 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="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260921-b4-sparsemem_cleanups-v2-13-54d81d65e125@kernel.org> References: <20260921-b4-sparsemem_cleanups-v2-0-54d81d65e125@kernel.org> In-Reply-To: <20260921-b4-sparsemem_cleanups-v2-0-54d81d65e125@kernel.org> To: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Baolin Wang , Brendan Jackman , Johannes Weiner , Zi Yan , Jan Kiszka , Kieran Bingham , Oscar Salvador , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-cxl@vger.kernel.org, driver-core@lists.linux.dev, linux-fsdevel@vger.kernel.org X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1240; i=david@kernel.org; h=from:subject:message-id; bh=wS9y+w2lDfEszO4z/i/MtEKk8SGbU5ElVBcX2HbtZBQ=; b=owGbwMvMwCF2/OVpCdfQ3ZWMp9WSGLI29rTv7z8j2O2UNOnPlhj7adzO/DcSrXuzc8wyL7/j2 fR5wuXDHaUsDGIcDLJiiixBwfcNXr5cV1vtxscMM4eVCWQIAxenAExkdjIjw5OOOasDtXXZFWsu mq11P5rI8LLx5J5zS/rTo17pzi7hnMLI8LBoT8j79/clv2qv5/nSPOHy5oshduf3T1LfdzFzaeN 8AU4A X-Developer-Key: i=david@kernel.org; a=openpgp; fpr=1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A Drop CONFIG_HAVE_ARCH_PFN_VALID handling, as CONFIG_HAVE_ARCH_PFN_VALID is never used with CONFIG_MEMORY_HOTPLUG, as the latter depends on CONFIG_SPARSEMEM_VMEMMAP. Make sure it stays that way. Reviewed-by: Lorenzo Stoakes (ARM) Reviewed-by: Mike Rapoport (Microsoft) Signed-off-by: David Hildenbrand (Arm) --- mm/memory_hotplug.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index d7a59167bec43..796af1028ee23 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -345,6 +345,8 @@ struct page *pfn_to_online_page(unsigned long pfn) struct dev_pagemap *pgmap; struct mem_section *ms; + BUILD_BUG_ON(IS_ENABLED(CONFIG_HAVE_ARCH_PFN_VALID)); + if (nr >= NR_MEM_SECTIONS) return NULL; @@ -352,13 +354,6 @@ struct page *pfn_to_online_page(unsigned long pfn) if (!online_section(ms)) return NULL; - /* - * Save some code text when online_section() + - * pfn_section_valid() are sufficient. - */ - if (IS_ENABLED(CONFIG_HAVE_ARCH_PFN_VALID) && !pfn_valid(pfn)) - return NULL; - if (!pfn_section_valid(ms, pfn)) return NULL; -- 2.43.0