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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 , 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> 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-v1-8-3fb0be6fc688@kernel.org> X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MISSING_XM_UA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWELVE(0.00)[25]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[davemloft.net,gaisler.com,kernel.org,linux-foundation.org,linux.ibm.com,ellerman.id.au,gmail.com,infradead.org,google.com,suse.com,vger.kernel.org,kvack.org,lists.ozlabs.org]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,localhost.localdomain:mid,imap1.dmz-prg2.suse.org:helo] 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) Acked-by: Oscar Salvador > --- > 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 > > -- Oscar Salvador SUSE Labs