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 53873C43458 for ; Wed, 8 Jul 2026 14:11:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 18A5B6B009D; Wed, 8 Jul 2026 10:11:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 161C56B009E; Wed, 8 Jul 2026 10:11:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 09FEA6B009F; Wed, 8 Jul 2026 10:11:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id DAED96B009D for ; Wed, 8 Jul 2026 10:11:40 -0400 (EDT) Received: from smtpin13.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 6875BC06FA for ; Wed, 8 Jul 2026 14:11:40 +0000 (UTC) X-FDA: 84965797560.13.8912551 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf31.hostedemail.com (Postfix) with ESMTP id CA4AE20009 for ; Wed, 8 Jul 2026 14:11:38 +0000 (UTC) Authentication-Results: imf31.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=XTU037Ex; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf31.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1783519898; 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=W4T3aSskSUL65uwGRfGm0A5PLww8rgg5Ag5MsYm7xYk=; b=oC9FFYHdCgV2TDa/KjOT9QxLRsfBlM/F5UipZUmp/Sfj7NvXEa0KloCEDQ+StU2SZGbzY1 6lF6NgZprrsF6x5LkrsipB9WTAl1PBzeVw+dlezrK/aaMncI+xHvCf0WxLNnKjM7BN0LMH cFzV1D8zIhmbfuvcrVnh6U03F4X43Ck= ARC-Authentication-Results: i=1; imf31.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=XTU037Ex; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf31.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783519898; b=DMkQ/ZHKtnZDb/kA26oik0tvLa4kIVjmqSIiM9eAEgGRuNR0VT7gFrSFaPypL6pmJZmvdw cAB6EoRMlco2W+JDd3QQoZktg/e9DWj+/lA8x+BdDJd+cg/B3Cr5fe1O48PRKa7/2DZ0LV Y3ufVnMxuM6k8EK8Ofutr6cdhyghXnM= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 6791C60008; Wed, 8 Jul 2026 14:11:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C60E71F00A3A; Wed, 8 Jul 2026 14:11:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783519898; bh=W4T3aSskSUL65uwGRfGm0A5PLww8rgg5Ag5MsYm7xYk=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=XTU037Ex9ZyJNkj8bDU9iKKXKpwT9vrllIePkr0TNA7XmWt0vSkPMfhGC7qjhjdBR +KFgz361KYVgiVFkg34SU9hGOGDQ2+oGXcj9aLZ/YjgQWnt+o3KXDAkdkZbjIZZ9Tx 8/LI7Misflb/4tiOvhr2pIcnpvw/pqOVIHz9z0UfS4ENkEU0ApQdtV1Dx5y2hlECdW fWdsxetgVhTRVTt4l0Wk7ZWVD690psoOKu4yg0GGTmzsxzstVn73IQck2mQ2lEsQlE 2CvWWgXrOV2w5ZYiXwVPpEuyZHvSI9NGXXomQR0zkv/FmVkzOpgrUZFDRpuBJH2RPg vaETbZy++DrHQ== From: "David Hildenbrand (Arm)" Date: Wed, 08 Jul 2026 16:10:59 +0200 Subject: [PATCH 04/10] mm/bootmem_info: allow calling free_bootmem_page() on pages without a bootmem_type MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260708-bootmem_info_part2-v1-4-156ce4986598@kernel.org> References: <20260708-bootmem_info_part2-v1-0-156ce4986598@kernel.org> In-Reply-To: <20260708-bootmem_info_part2-v1-0-156ce4986598@kernel.org> To: Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Muchun Song , Oscar Salvador Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, "David Hildenbrand (Arm)" X-Mailer: b4 0.15.2 X-Stat-Signature: uodtep9co1xwrb5mmz9y8d6oeyh8rhyp X-Rspamd-Queue-Id: CA4AE20009 X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783519898-171796 X-HE-Meta: U2FsdGVkX19kZf/0xrlzbOMcghnKfe3V022IqAhO+Nb/7f6moqaNVqtsK1o5U9bLCwHXnd8lrzKoq/77lQajGIxAFAZUuJhL7AYDxDlZ0mNdsaQWjaWQbmjCErLOYJzSIGmnnrrYPse+162OJ5i16TtOdVaYMaOI0euJRp8TF9LAl8GpVmxVW7kIVdPIoom4hplaplHO2NQTF3PZEPXl1zONAVMP6jnUY7EVl9px7HFm/Vjw9EmfNeS3DRmgLoThDaKaA1VwFIyhOsoBDgIvUDSfRgDNeGX8BsTha8VCmPmrNTKiR1XzUo2l6htSlIMGlUvGSQEd/+UHeF36wVEagclwb98I5izH58vG2NikZj4nO2yxqd8qZjXtjW46OdoAOTkCS4QKxmgQlNyt1QdI4oPv6x11kfgT3UFy3StWN7V51irvKqlf4X0puZbvR6hDQRelHJ/M44fYOkUWbTD0s1gJh7RU/3QUpJ7j/W4bDTP1wvDVwdZxNruW4IHd4Uj0xGbjlyIQ9HzS36wsAj8S91wrcqyFYH22ioV25XjRg1X4UJ9SuI2Eg9j2n9J07bYnHk//e3mbA2jcE7/2GIaTEV8hWhZ9nSQ9JSBVwpYbn+DLZ0PizuivaKf4C7wnjDPN6og22dUCkkg2aURnXIqiSx6fdhmXRdMMSrhwaIeXlNiIpsBJW4E/8DgNsOSupiHj7QHomfob5jt5IZT9P/ImbS4jOByul/I3hN++FC1ZkCBPRMZn+QOREwL4yE/rYGJ2rzGPJudQf+trE5yc4b40IXEVhSMN2Ix7vN7SayyLPxGRvmH6CqpSfgtLkHGtY7jle4Piv3spfWj+iIjhnWB0jcvdR9kWUqAizKrrh4Tbkk6APDtkgMlrMKtJfgSGoFmBil58m3v7xgDvUzYGZfxdSzgDlMnoVhy3Vd4Icbk4hfM5ZZ0SRNcEh+h1b3EZsO/4rVNH4Tm4biKjD8B82va Tjs8sVj9 MXJyDX13rS66jWDDDN98OR6V2J+/olwYPWIacoPey3r4maXZYqLly+dLq/9LmTpU+kC5LJeelfNzIMjwYhmFV2yIe2sO8scn1UFU+jbJtwdFtHl4ZAKUkVW550mfR5/f4AaMYTdjZFzoW4Ci9eVgN7gmmUB/z4Ldu3lUj8nBh0Tz0ZyFzy7ZaiZ95MvdVljTun2Ctl66n4EPQZuC343oXpCnGK7uuxTCyFWyO6XWROZvO3azIEkgKoy9tHQOL5yDkoJtTArXRzW+o16KRvyx10NDR5mOqmU2nVnK2 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: As preparation for further changes, let's temporarily allow freeing pages that were not previously registered. This will allow freeing unregistered vmemmap pages allocated during boot through free_bootmem_page() from hugetlb code, until we fully rip all of that out. Signed-off-by: David Hildenbrand (Arm) --- include/linux/bootmem_info.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/bootmem_info.h b/include/linux/bootmem_info.h index f724340755e55..486acc6127039 100644 --- a/include/linux/bootmem_info.h +++ b/include/linux/bootmem_info.h @@ -44,12 +44,12 @@ static inline void free_bootmem_page(struct page *page) { enum bootmem_type type = bootmem_type(page); - VM_BUG_ON_PAGE(page_ref_count(page) != 2, page); - - if (type == SECTION_INFO || type == MIX_SECTION_INFO) + if (type == SECTION_INFO || type == MIX_SECTION_INFO) { + VM_WARN_ON_PAGE(page_ref_count(page) != 2, page); put_page_bootmem(page); - else - VM_BUG_ON_PAGE(1, page); + } else { + free_reserved_page(page); + } } #else static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) -- 2.43.0