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 CEB09488D9C for ; Mon, 28 Sep 2026 08:48:26 +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=1790585309; cv=none; b=PDNZyg+qynm5jT4xaP7SHWTpNd37TaxCYeHk01erkbgdrxetr61mS8QY+cSmFvFvyaEQjRAkj9S7/0IhDF8fb9bqBI863tOgUGXJmhrIxtTNJqdomXLK1ydwgn9vF02Q3I3b4b5A6NlUp/jgQj0T7+Bf6/3mRyucEWwMK5twmbc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790585309; c=relaxed/simple; bh=4+YaRd+w8CkKUy2umZb5rtfcp72agIYLGB21NcbX/fw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=Qj7o9kfGSgL9dU5ny4mZpY54zM2egFkAg4ecwoaVm+1U5sS2q3LA3Q1qvPb13UifZdaR8X96Oqe4pq04z8J/o4UCBZXs4Jqr0xKu4lQXCcd5tdj13tBeOgIDKDGgVkXdkS1cuUoIRERJqZbg1xq2b+GP6I0f3HseZcpCdKjJIC8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hxbySvb0; 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="hxbySvb0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 852CC1F00893; Mon, 28 Sep 2026 08:48:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790585306; bh=yLabRzTUqOUXQwgBjet8vKJDfT/Yj93lFm/f0NXf0fg=; h=From:Date:Subject:To:Cc; b=hxbySvb0c5U1ddRxETp6cq1wU7L0alG6fj7LX9jUThAcqHAP6DklVfNDAiFMmhBTp oYhLfiJSG/U1KguJ1+fjQ1sKb2nDYsIbQWrj7F0SFh+zcmju3XcpqGm9ACxlqzVh81 imPv3oNQC+NcUOKqwhnoyuXoxws25H6N/Md7YGEKNNT5LgJWkHODd1WsT3oLu5XcFK 5BJ3edJlelICi0L81sA+IiZ+qG4Zr46Bwm3HWnhXxKOWwiW0fzHTC89ewFeVFtwAuE lzP9GtwlYiSi3CIp1y8XdnhYJU+nefUAKpLOTJYcK6OoeFYkVsdj+EM9GswkdWZXVU m2+XfPvh4HSrQ== From: "David Hildenbrand (Arm)" Date: Mon, 28 Sep 2026 10:48:21 +0200 Subject: [PATCH] vmcoreinfo: export SECTION_HAS_MEM_MAP 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: <20260928-section_has_mem_map-v1-1-4129f6ba2838@kernel.org> X-B4-Tracking: v=1; b=H4sIANQpumoC/yWM0QqDMAwAf0XybCEWFLtfESldjZpBVRo3BuK/G 7fHg7s7QCgzCTyKAzJ9WHhdFKqygDiHZSLDgzJYtA062xqhuKvj5yA+UfIpbKaxWA/RYUA3gpZ bppG/v2vX/1nez5eW9wrO8wLuHPfkdwAAAA== X-Change-ID: 20260928-section_has_mem_map-6205dc90a09f To: Andrew Morton , Baoquan He , David Carlier , Dave Young Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, "David Hildenbrand (Arm)" X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1383; i=david@kernel.org; h=from:subject:message-id; bh=4+YaRd+w8CkKUy2umZb5rtfcp72agIYLGB21NcbX/fw=; b=owGbwMvMwCF2/OVpCdfQ3ZWMp9WSGLJ2aV7fJiTZsbSSO9P1lYho1/1HHhtNdlb6H3vYUZP+J +f3l3T+jlIWBjEOBlkxRZag4PsGL1+uq61242OGmcPKBDKEgYtTACayQJqR4QXXg8p2FVmmD+xf /1VOKCn4YyydI6+dI+7/+OBywXu3JzIyXHwUXzzpx8kM0yyjE3OuRL6x11iz8KDcx813VNtro9Z xsQIA X-Developer-Key: i=david@kernel.org; a=openpgp; fpr=1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A The crash tool currently hardcodes SECTION_HAS_MEM_MAP, and makedumpfile needs similar information (although still relying on SECTION_MARKED_PRESENT, it should switch to SECTION_HAS_MEM_MAP). Let's just export the value instead, so tools that work on vmcoreinfo will not have to guess. Signed-off-by: David Hildenbrand (Arm) --- Result of the discussion in reply to "[PATCH v2 00/13] mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups" [1] This patch can go in independently. It would be preferable if both go into the same kernel release ;) [1] https://lore.kernel.org/r/20260921-b4-sparsemem_cleanups-v2-0-54d81d65e125@kernel.org --- kernel/vmcore_info.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/vmcore_info.c b/kernel/vmcore_info.c index 5a417f8a922a..7833a36064a8 100644 --- a/kernel/vmcore_info.c +++ b/kernel/vmcore_info.c @@ -182,6 +182,7 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_STRUCT_SIZE(mem_section); VMCOREINFO_OFFSET(mem_section, section_mem_map); VMCOREINFO_NUMBER(SECTION_SIZE_BITS); + VMCOREINFO_NUMBER(SECTION_HAS_MEM_MAP); VMCOREINFO_NUMBER(MAX_PHYSMEM_BITS); #endif VMCOREINFO_STRUCT_SIZE(page); --- base-commit: 57e4ac91fc62d75d84b5a03827a19ceb4094ecd9 change-id: 20260928-section_has_mem_map-6205dc90a09f -- Cheers, David