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 1F815407563 for ; Fri, 9 Oct 2026 05:57:41 +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=1791525462; cv=none; b=WIQQB4N38E9SQMYgZqOvto0rAZxphquMG+y895GnQ2Sq2DNE0C+jJtB8lI8LbmJMZgFj8Uy1dAbOgJ7j6pJsaFADj4rz2CmBB4v/MeBhBpIFFBGYoe3keEoukT+YVQe5Dhf5B5DHRzRGcqo6DxCrnYAixUEzfqh2KGFGyQwWPIw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525462; c=relaxed/simple; bh=qXL3lr3TFYRO/bwWR1a7smXijIZ8j+AmjSnHvJl/fXU=; h=Date:To:From:Subject:Message-Id; b=jx5b1Q3kSgd6RV/Wi5Je8xIPzV3H3rjANcp1s0h1VN2Z/ft4Fu1sIBTD0Adl2W0mKz+L38F9lpJXGAfImXDhEpcy75IOgeanQHE7RWBMov9AnUm1sgcz2MEllPPAZ7CYHFoh6NVlncBlXdNE0zqj8pVRhzRcjcuAnBU4ylInXu0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=fail (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=hgDE6eSa reason="signature verification failed"; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="hgDE6eSa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E23121F000FF; Fri, 9 Oct 2026 05:57:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791525461; bh=jUSsA3I8KG5SNm7AgGNd87ZQMSWBxkCWaFLUl3p508o=; h=Date:To:From:Subject; b=hgDE6eSaMwXjOVVHp7N79B5ZRjt7tEV7N1HeVvTKt7mgqVIEEw3HL7vadqruAxy7O +Zv2gF0hYxXK80eY0XktG4+iuuPvS7TaFq6N1hD7IYQh8tMvtnRvEMOZj1SmiNHWJ1 0bW3yBzBG5TUlNA5Lx3dPXm5phcUXA6WVBeMPioY= Date: Thu, 08 Oct 2026 22:57:40 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,ysato@users.sourceforge.jp,will@kernel.org,vgupta@kernel.org,vbabka@kernel.org,usama.arif@linux.dev,tsbogend@alpha.franken.de,tglx@kernel.org,svens@linux.ibm.com,surenb@google.com,stefan.kristiansson@saunalahti.fi,shorne@gmail.com,shakeel.butt@linux.dev,schuster.simon@siemens-energy.com,ryan.roberts@arm.com,rppt@kernel.org,richard@nod.at,richard.henderson@linaro.org,rdunlap@infradead.org,qi.zheng@linux.dev,pjw@kernel.org,peterz@infradead.org,peterx@redhat.com,palmer@dabbelt.com,npiggin@gmail.com,nico.pache@linux.dev,mpe@ellerman.id.au,monstr@monstr.eu,mingo@redhat.com,mhocko@suse.com,mattst88@gmail.com,mark.rutland@arm.com,maddy@linux.ibm.com,linux@armlinux.org.uk,linmag7@gmail.com,liam@infradead.org,lance.yang@linux.dev,kernel@xen0n.name,kas@kernel.org,jonas@southpole.se,johannes@sipsolutions.net,jhubbard@nvidia.com,jgg@ziepe.ca,jcmvbkbc@gmail.com,james.bottomley@hansenpartnership.com,hughd@google.com,hpa@zytor.com,hca@linux.ibm.com,guor en@kernel.org,gor@linux.ibm.com,glaubitz@physik.fu-berlin.de,geert@linux-m68k.org,dinguyen@kernel.org,dev.jain@arm.com,deller@gmx.de,david@kernel.org,davem@davemloft.net,dave.hansen@linux.intel.com,dalias@libc.org,corbet@lwn.net,chris@zankel.net,chleroy@kernel.org,chenhuacai@kernel.org,catalin.marinas@arm.com,bp@alien8.de,borntraeger@linux.ibm.com,bcain@kernel.org,baolin.wang@linux.alibaba.com,baohua@kernel.org,arnd@arndb.de,aou@eecs.berkeley.edu,anton.ivanov@cambridgegreys.com,aneesh.kumar@kernel.org,andreas@gaisler.com,alex@ghiti.fr,agordeev@linux.ibm.com,ljs@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch removed from -mm tree Message-Id: <20261009055740.E23121F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc64 has been removed from the -mm tree. Its filename was mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: "Lorenzo Stoakes (ARM)" Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc64 Date: Fri, 25 Sep 2026 21:09:41 +0100 Commit 4a0100f7546f ("sparc64: use RCU page table freeing") enabled CONFIG_MMU_GATHER_RCU_TABLE_FREE for SMP sparc64 architectures, expressly for GUP-fast page table walkers. Naturally, UP systems do not have to worry about concurrent GUP fast operations. However, CONFIG_PREEMPT_RCU is also available even on a UP system, so a future pure-RCU page table walker requires MMU_GATHER_RCU_TABLE_FREE to be enabled on UP, even if concurrent GUP fast is not possible there. To enable future pure-RCU page table walkers, enable MMU_GATHER_RCU_TABLE_FREE unconditionally. With this change, it is no longer necessary to have !CONFIG_SMP pgtable_free_tlb(), so also remove this now dead code. This forms part of an overall effort to switch every architecture to this mode. Link: https://lore.kernel.org/20260925-rcu-pagetable-freeing-v5-6-31e91065fea4@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Signed-off-by: Andrew Morton Acked-by: Kiryl Shutsemau (Meta) Tested-by: Lance Yang Acked-by: Lance Yang Cc: David Hildenbrand Cc: Zi Yan Cc: Baolin Wang Cc: Liam R. Howlett Cc: Nico Pache Cc: Ryan Roberts Cc: Dev Jain Cc: Barry Song Cc: Usama Arif Cc: Guo Ren Cc: Brian Cain Cc: Geert Uytterhoeven Cc: Dinh Nguyen Cc: Simon Schuster Cc: Jonas Bonn Cc: Stefan Kristiansson Cc: Stafford Horne Cc: Rich Felker Cc: John Paul Adrian Glaubitz Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Alexandre Ghiti Cc: Russell King Cc: Vineet Gupta Cc: Michal Simek Cc: Chris Zankel Cc: Max Filippov Cc: Will Deacon Cc: Aneesh Kumar K.V Cc: Nicholas Piggin Cc: Peter Zijlstra Cc: David S. Miller Cc: Andreas Larsson Cc: Richard Henderson Cc: Matt Turner Cc: Magnus Lindholm Cc: Catalin Marinas Cc: Mark Rutland Cc: Huacai Chen Cc: WANG Xuerui Cc: Thomas Bogendoerfer Cc: James Bottomley Cc: Helge Deller Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Christophe Leroy Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: Richard Weinberger Cc: Anton Ivanov Cc: Johannes Berg Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: H. Peter Anvin Cc: Arnd Bergmann Cc: Vlastimil Babka Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Jason Gunthorpe Cc: John Hubbard Cc: Peter Xu Cc: Yoshinori Sato Cc: Shakeel Butt Cc: Jonathan Corbet Cc: Randy Dunlap Cc: Hugh Dickins Cc: Qi Zheng --- arch/sparc/Kconfig | 4 ++-- arch/sparc/include/asm/pgalloc_64.h | 8 -------- 2 files changed, 2 insertions(+), 10 deletions(-) --- a/arch/sparc/include/asm/pgalloc_64.h~mm-enable-mmu_gather_rcu_table_free-for-sparc64 +++ a/arch/sparc/include/asm/pgalloc_64.h @@ -74,8 +74,6 @@ void pte_free_defer(struct mm_struct *mm void pgtable_free(void *table, bool is_page); -#ifdef CONFIG_SMP - struct mmu_gather; void tlb_remove_table(struct mmu_gather *, void *); @@ -96,12 +94,6 @@ static inline void __tlb_remove_table(vo is_page = true; pgtable_free(table, is_page); } -#else /* CONFIG_SMP */ -static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) -{ - pgtable_free(table, is_page); -} -#endif /* !CONFIG_SMP */ static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte, unsigned long address) --- a/arch/sparc/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-sparc64 +++ a/arch/sparc/Kconfig @@ -75,8 +75,8 @@ config SPARC64 select HAVE_FUNCTION_GRAPH_TRACER select HAVE_KRETPROBES select HAVE_KPROBES - select MMU_GATHER_RCU_TABLE_FREE if SMP - select HAVE_ARCH_TLB_REMOVE_TABLE if SMP + select MMU_GATHER_RCU_TABLE_FREE + select HAVE_ARCH_TLB_REMOVE_TABLE select MMU_GATHER_MERGE_VMAS select MMU_GATHER_NO_FLUSH_CACHE select HAVE_ARCH_TRANSPARENT_HUGEPAGE _ Patches currently in -mm which might be from ljs@kernel.org are mm-vma-fix-mmap_prepare-file-handling-remove-file_doesnt_need_get.patch mm-vma-introduce-and-use-vma_can_merge.patch mm-consistently-validate-vma-state-after-mmap-hooks.patch mm-vma-ensure-mmap_prepare-doesnt-set-actions-on-a-mergeable-vma.patch mm-make-map_kernel_pages_-internal-and-unexported.patch mm-vma-tidy-up-map-kernel-pages-enum-values.patch mm-add-mmap-action-for-discontiguous-kernel-page-mapping.patch docs-filesystems-update-mmap_prepare-docs-for-discontig-kernel-pgs.patch drivers-usb-mon-update-to-use-mmap_prepare-map-kernel-pages.patch infiniband-update-hfi1-to-use-remap_vmalloc_range.patch selinux-reject-writable-opens-of-policy-file-drop-mmap-shared-write-check.patch alsa-pcm-use-vm_insert_page-to-map-pcm-status-page.patch bpf-arena-mark-arena_map_mmap-mappings-vm_mixedmap.patch mm-vma-add-vma_is_mm_managed-predicates.patch mm-vma-only-allow-mmap-to-clear-vma_maywrite_bit-if-not-mm-managed.patch mm-vma-add-and-use-vma__is_fixed_mapping.patch scsi-sg-convert-mmap-hook-to-mmap_prepare-and-rework.patch fbdev-defio-assert-fbinfo_virtfb-drop-vm_io-add-vm_mixedmap.patch hsi-cmt_speech-convert-mmap-hook-to-mmap_prepare-refactor.patch mm-gup-error-out-early-on-vma_mayread_bit-vmas.patch uprobes-remove-vm_io-set-vm_mixedmap-for-mapped-kernel-pages.patch mm-mlock-clear-vma_locked_mask-over-mmap-callback.patch mm-mlock-eliminate-weird-vma_io_bit-abuse-and-simplify.patch mm-vma-enforce-that-mm-managed-mappings-may-not-set-vma_io_bit.patch mm-remove-vma_io_bit-check-in-vma_is_mm_managed.patch mm-remove-hugetlb_inlineh.patch mm-rename-is_vm_hugetlb_page-to-vma_is_hugetlb.patch mm-drop-some-redundant-checks-around-hugetlb-vmas.patch mm-madvise-update-is_valid_guard_vma-to-use-vma_can_merge.patch mm-vma-introduce-vma_is_mm_backed.patch mm-uffd-use-predicates-for-userfaultfd-checks.patch mm-madvise-use-predicates-for-madvise-madv_dofork.patch mm-eliminate-vma_special_flags-usage-when-hugetlb-explicitly-tested.patch mm-eliminate-vma_special_flags-check-in-lru_gen_look_around.patch mm-avoid-use-of-vma_special_flags-in-migrate_vma_setup.patch mm-eliminate-vm_special-vma_special_flags.patch fuse-dax-do-not-set-vm_mixedmap.patch mm-huge_memory-remove-vma_is_special_huge.patch mm-vma-const-ify-vma_assert_stabilised-and-associated-functions.patch mm-implement-and-use-vma_has_anon_rmap-silence-kcsan.patch mm-update-comments-to-refer-to-anon-rmap-rather-than-anon_vma.patch mm-vma-dont-remove-vma-from-rmap-if-pgoff-unchanged.patch