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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 72EADCD4855 for ; Tue, 12 May 2026 07:46:16 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gF7vC0DLCz2ygG; Tue, 12 May 2026 17:46:15 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2a00:1450:4864:20::32f" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1778571974; cv=none; b=ZVDn4qSCMcCOjO6aiqG8BNczkfadNIpavVBzKIJmA4r48dzb6bY1sutEQyrw+VbPb+x5gStC5MtpCS4J9Ct1YMKdtB+bjHLmJGza3aonb8OXzxwKwhO1KMCqAUTSGECIa7tg9yslTA6tMw+pk8aGvxySaW9s6sdHKzmEqwN7TXgHpg4CPP15wO32vcQZoR2tYwfeTFDuvu6bcxc2kBPJ9woQH1bwQxlf8aJn8wKMxIauc6P6hd/CF0mz+en8DUYD7pr6Fy5JevXF+sn4Wpn735m+ClQLIOgSOXlo89dr+uTdUZIt10xQ9Qk9oc5O5LDO3pQWUn4WfGejdbuQVDkiPg== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1778571974; c=relaxed/relaxed; bh=MV3zAoldwoclbqs7qOGs2hdICyTLCe/Y0G+BfFOFXqo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iNJYblbuz3PGRMZkZfAuz7FiB45QdDAVUZvNbopPC2h98qA8BzQODz2ChWXtz01UaSUk12eCVuDI1zzMptPojqwMc/fnVK76wmar7aLkkYfoRL+me6ZLy7DYUnbjI/Fm53S0pECbwBsLIsRZLq3zavxaVk2eMmxlarYxj7OAShWTb9nakh7XdVw102Q8DXnMcqhC7cYzhJTRAZWmQMYzuyLlF9OC1GLbc1Max3VjNdAnQHlyqGg1sooyum1jW5nIg4Dmq4gmJ1Y6MXSZS/2F9EEcU4hpOGwJaqqdWof0/m6SaxeUJwmB8EyaJJeSSQAqzG93TSmeUGlRVhQanGIy2w== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; dkim=pass (2048-bit key; unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256 header.s=google header.b=Rz8Rw7jA; dkim-atps=neutral; spf=pass (client-ip=2a00:1450:4864:20::32f; helo=mail-wm1-x32f.google.com; envelope-from=mhocko@suse.com; receiver=lists.ozlabs.org) smtp.mailfrom=suse.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256 header.s=google header.b=Rz8Rw7jA; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=suse.com (client-ip=2a00:1450:4864:20::32f; helo=mail-wm1-x32f.google.com; envelope-from=mhocko@suse.com; receiver=lists.ozlabs.org) Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4gF7v95JJVz2yb9 for ; Tue, 12 May 2026 17:46:13 +1000 (AEST) Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-488a14c31eeso35646805e9.0 for ; Tue, 12 May 2026 00:46:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1778571971; x=1779176771; darn=lists.ozlabs.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=MV3zAoldwoclbqs7qOGs2hdICyTLCe/Y0G+BfFOFXqo=; b=Rz8Rw7jAYEX4dwphaPSC9qTVWI2xKcOFMvyd0NAlrBEK4bTWKJHGls6gYrhcqqO7MZ P+PDrnIG2QQqW7KhXHY+o7ZWJqjn25vjyngPoIvAQ3+kmsO4/svx8DFZlYa76u2cLD0e VKenZvqoaREclEL4AkMNjAm0v9yOGbVobryHBg0mZVWIA+HIj+0PGo6yaZX6Yx3lYt+b JmnYLgwHkMnt37dbj99CmZkFOlCdSTrVLNpSwszzo0Fk5ecc4BO6iM6nR57Uzn1FaPFH toSW5YtHen1BujBXM23ZVKfRMGuvRIa1HfO/kud6Th1faJGEuuxb0LVDQ3vwQpO6kcWi EK8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778571971; x=1779176771; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MV3zAoldwoclbqs7qOGs2hdICyTLCe/Y0G+BfFOFXqo=; b=syD6DMa15dYvrn1QT57Xcqos3vT0bhwXwK9omcYCY4ijN2KEywZ8unsbOraf+sdE+6 tj623MiGQM5LakAMj1xaDgXSCJrO+hS3EgZEhoRzFoVwL3+q1MEv8qAtYPJ3Hy6eBC9t /g7TogZBJo8q0aP2jdyfrgTZUG8v9WbpdlSYtc35TM3ZVlE5iD/Jd+F4uv0pCXSwoP82 ulXwoDfoPRRLu0n2n0nVkZxKHbrdDjbiA5/HmJM5C+Z4BUzbTITz80Ftroz12Z9AMEhY 6T/y1qAc++Ud4+z+Wz0BqNeE+v4Z5XFJ7rAupn7Lm6qxQehLDBGKaNaZJLLDu51AbsrM /s5w== X-Forwarded-Encrypted: i=1; AFNElJ+eJ8CMTcOFv+UUVRFvRgvdlKlOH7Vcn2VmDLaqSQ8xDDKxdWCYTEqKIZjDf8zl0jxU+1exCNjxiR4AvTs=@lists.ozlabs.org X-Gm-Message-State: AOJu0YyIweOVzRkqx65/gqE7BozewpWjJE1BwQxbGyPDGpLN4x+o7gFi amF4owO3Z4Ck0wvK5MvgkEJivWPrh/QREIsxA+y2k8nPkdbZ+n8eKmNEF69y89ANF5Q= X-Gm-Gg: Acq92OGJEbQkje21nCQsgmSm3Ab50rS8g+8U5t2VS7YqEe9sJfDNZH9oZzxqoUDxv+m 7la/752RadzL0GoLAQtdT2uVVxN9Cetf+XV3H8LgmpMUAcmeYW3lEQfCH4Fd8sH9C4sTwbeByUu jK033tqiRgWC8QXXdXsd69AhrSJRosWHMEgQEpovLcbAUQOgrkurHQsjiNZknTAV6D/dmR8X/ry KB8Ak+//iC+LWDaJsSUTFExCBJdl9MR3gAbbFQo8jrxTm+PmbBT3MuciSszt2YGDWi5FuF/A72N ec+m89BBtURz6xc0FnlVZgtQmuvC+Hp7I+fQhpMnXm+sXFAkM3qu/jUd6D1p1jrWmiUiMB2jiDg pFEyEcAGxrFJtqY/RYacgOonhTSqWiSusb97I0LmY2c6llIZffisrIjWMk7Jb3QGDDqE4Wk6Bwv wyuo9U6SZN8ErRaIoZNO/MVTTtqbmrqAAh7TVE X-Received: by 2002:a05:600c:a02:b0:48a:6798:52e9 with SMTP id 5b1f17b1804b1-48e67244c53mr274594475e9.0.1778571970739; Tue, 12 May 2026 00:46:10 -0700 (PDT) Received: from localhost (109-81-80-123.rct.o2.cz. [109.81.80.123]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e908cb62dsm42830055e9.10.2026.05.12.00.46.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2026 00:46:10 -0700 (PDT) Date: Tue, 12 May 2026 09:46:09 +0200 From: Michal Hocko To: "David Hildenbrand (Arm)" Cc: "David S. Miller" , Andreas Larsson , Mike Rapoport , Andrew Morton , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) Message-ID: References: <20260511-bootmem_info_prep-v1-0-3fb0be6fc688@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260511-bootmem_info_prep-v1-0-3fb0be6fc688@kernel.org> On Mon 11-05-26 16:05:28, David Hildenbrand wrote: > We want to remove CONFIG_HAVE_BOOTMEM_INFO_NODE. As a first step, > let's limit the remaining harm to x86 and core code, removing > sparc, ppc and s390 leftovers, starting the stepwise removal by removing > and simplifying some code. > > Once a related x86 vmemmap fix [1] is in, we can merge part 2 that will > remove CONFIG_HAVE_BOOTMEM_INFO_NODE entirely. > > Tested on x86-64 with hugetlb vmemmap optimization in combination with > KMEMLEAK, making sure that the problem reported in dd0ff4d12dd2 ("bootmem: > remove the vmemmap pages from kmemleak in put_page_bootmem") does not > reappear -- hoping I managed to trigger the original problem. > > Heavily cross-compiled, but let's let build bots run on it for a bit. > > [1] https://lore.kernel.org/r/20260429-vmemmap-v2-1-8dfcacffd877@kernel.org > > Signed-off-by: David Hildenbrand (Arm) > --- > David Hildenbrand (Arm) (8): > sparc/mm: remove register_page_bootmem_info() > mm/bootmem_info: drop initialization of page->lru > mm/bootmem_info: stop using PG_private > mm/bootmem_info: remove call to kmemleak_free_part_phys() > mm/bootmem_info: stop marking the pgdat as NODE_INFO > mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO > s390/mm: use free_reserved_page() in vmem_free_pages() > powerpc/mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE > > arch/powerpc/mm/init_64.c | 8 -------- > arch/s390/mm/vmem.c | 3 +-- > arch/sparc/mm/init_64.c | 20 -------------------- > include/linux/bootmem_info.h | 1 - > mm/Kconfig | 2 +- > mm/bootmem_info.c | 25 ++----------------------- > 6 files changed, 4 insertions(+), 55 deletions(-) Good clean up. Feel free to add Acked-by: Michal Hocko to all patches but kmemleak one which I do not feel qualified to judge. Thanks! -- Michal Hocko SUSE Labs