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 8B5F544CF3E; Wed, 8 Jul 2026 14:11:38 +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=1783519899; cv=none; b=OS12ABCx3/GI/y9+XHtYB1zjR6B9odMGHTkgQwj8onAoI1COjSpmqKDgJCRBIREoR9rwmTyG54be5Ght0rQoB9GwMYuriehrWsrMtiQjXbiboAZrXqyxZL6GSz4G8J3ruZYSN7g2Xwx8rnjQBkRC1nBGI4dfBxKTmq8epufsFiA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783519899; c=relaxed/simple; bh=tVonLJ4bqqR4yCaE2I3p2K0L3Lq6bKlSTWW24L9kh88=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BiCcRrnqKYmFp0L71C5WFzkHRhS3xqIgw17ZNpu7pGeGYdOXa7+TORSUbxqktnh1WVimpihdV8lrfJwJf/K9N/WhuEaXBA8u1l4rBDmebT2JzSsG54fMFQouWw3ghGu372dCuotgnWltWrITtHW8PL80DV++CN6RQ8SA4R7O++o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XTU037Ex; 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="XTU037Ex" 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 Precedence: bulk X-Mailing-List: linux-s390@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: <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 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