From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 693A03DEAC2; Wed, 13 May 2026 08:41:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778661709; cv=none; b=MFjAuzjSS0PHebsVNba0lRP1LTnch39msY4KddK5JtK6Z20jROj53+FrZfdSusQZvJTvRqsO40WYKONmYvWgt1CwYqdNVDu36QVeTaali8l92+nEaQZUGq4XJu9YG7xqe8dNXzFbRbbjtsvdFHY4NmCEn+26/YfKCiWArtJIZiU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778661709; c=relaxed/simple; bh=G5ge1Ms5w5w/WOlbzkIN+oCsjgnKKihgDEBHNY+4t84=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=spQHp/Uq8E598b5d3awHeg741k/Yo5XRso0PbcXh5hBTKMOeNlTzy+6bXQQot/Yl2z464kOytwkZ7wLJvVWcUeuh359p5B/KZLL+JrxcegQxpDGXnoRqpjXHW48JmnS7+90zBC01Mdzp24bAwkDfToT9noUF2dEsa4OR6+o3EJ4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gF1ZrZh2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gF1ZrZh2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17B4BC2BCB7; Wed, 13 May 2026 08:41:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778661708; bh=G5ge1Ms5w5w/WOlbzkIN+oCsjgnKKihgDEBHNY+4t84=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gF1ZrZh2z0PfjXk/JaTiWJN3Zwq9n1yXdLYSwGgtH/UbaPGBeI1PqTFOWu+uw2fmv Lz2BCj9WAqFkC5+okdC8bt8qsrUwRjoGCTtmIVx421M+sYpp/fzlPQ7U3GqhFJxpOL eWQd+iFykyLefV4HtfewUidnx08Bm8oy069QupPbc0Cg/FoRNW1zMl/3q4Yz+fXTYT 9aWTDk2zqKWoB77yQ/FdvQ853sm5qE3FID4NnDWBftlpdWIXTHmYe6kyq1pbxwW53C BpnQCY6u/QtkKHB4t28Ckn7ckSQVCqHqbbhViJQ80UnY04G7AA9ybc8FL5okBUdu1l vjNSlJ6SsWKUg== Date: Wed, 13 May 2026 11:41:37 +0300 From: Mike Rapoport To: "David Hildenbrand (Arm)" Cc: "David S. Miller" , Andreas Larsson , 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 , Michal Hocko , 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 8/8] powerpc/mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE Message-ID: References: <20260511-bootmem_info_prep-v1-0-3fb0be6fc688@kernel.org> <20260511-bootmem_info_prep-v1-8-3fb0be6fc688@kernel.org> 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=us-ascii Content-Disposition: inline In-Reply-To: <20260511-bootmem_info_prep-v1-8-3fb0be6fc688@kernel.org> On Mon, May 11, 2026 at 04:05:36PM +0200, David Hildenbrand (Arm) wrote: > register_page_bootmem_info_node() essentially only calls > register_page_bootmem_memmap(). However, on powerpc that function is a > nop. So there is not benefit in using CONFIG_HAVE_BOOTMEM_INFO_NODE > anymore, let's just drop it. > > We can stop including bootmem_info.h. > > Signed-off-by: David Hildenbrand (Arm) Reviewed-by: Mike Rapoport (Microsoft) > --- > arch/powerpc/mm/init_64.c | 8 -------- > mm/Kconfig | 2 +- > 2 files changed, 1 insertion(+), 9 deletions(-) > > diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c > index b6f3ae03ca9e..64f0df5bb5cd 100644 > --- a/arch/powerpc/mm/init_64.c > +++ b/arch/powerpc/mm/init_64.c > @@ -41,7 +41,6 @@ > #include > #include > #include > -#include > > #include > #include > @@ -388,13 +387,6 @@ void __ref vmemmap_free(unsigned long start, unsigned long end, > > #endif > > -#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE > -void register_page_bootmem_memmap(unsigned long section_nr, > - struct page *start_page, unsigned long size) > -{ > -} > -#endif /* CONFIG_HAVE_BOOTMEM_INFO_NODE */ > - > #endif /* CONFIG_SPARSEMEM_VMEMMAP */ > > #ifdef CONFIG_PPC_BOOK3S_64 > diff --git a/mm/Kconfig b/mm/Kconfig > index e221fa1dc54d..97b079372325 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -537,7 +537,7 @@ endchoice > > config MEMORY_HOTREMOVE > bool "Allow for memory hot remove" > - select HAVE_BOOTMEM_INFO_NODE if (X86_64 || PPC64) > + select HAVE_BOOTMEM_INFO_NODE if X86_64 > depends on MEMORY_HOTPLUG > select MIGRATION > > > -- > 2.43.0 > -- Sincerely yours, Mike.