* [to-be-updated] mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch removed from -mm tree
@ 2026-09-25 22:22 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2026-09-25 22:22 UTC (permalink / raw)
To: mm-commits, ljs, akpm
The quilt patch titled
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
has been removed from the -mm tree. Its filename was
mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch
This patch was dropped because an updated version will be issued
------------------------------------------------------
From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
Date: Tue, 22 Sep 2026 16:35:36 +0100
Each of these architectures directly free page tables without routing
these changes through tlb_remove_ptdesc().
The use of tlb_remove_ptdesc() is required for
CONFIG_MMU_GATHER_RCU_TABLE_FREE to correctly free page tables under RCU,
so simply update these architectures to use these functions.
Since none of the architectures share page tables or do anything unusual,
nothing complicated is required here.
Therefore this is simply a mechanical change - convert __pud_free_tlb(),
__pmd_free_tlb() and __pte_free_tlb() to use tlb_remove_ptdesc() as
required.
At the point this is in place, all mmu_gather page table freeing is
performed under RCU, and thus MMU_GATHER_RCU_TABLE_FREE is selected for
each architecture.
Note that CONFIG_MMU_GATHER_RCU_TABLE_FREE is dependent on CONFIG_MMU for
xtensa to reflect the fact that nommu does not implement page table
gathering.
This forms part of an overall effort to switch every architecture to this
mode.
Link: https://lore.kernel.org/20260922-rcu-pagetable-freeing-v4-5-fe1ad1f1e303@kernel.org
Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Acked-by: Lance Yang <lance.yang@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Nico Pache <nico.pache@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Guo Ren <guoren@kernel.org>
Cc: Brian Cain <bcain@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Schuster <schuster.simon@siemens-energy.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Aneesh Kumar K.V <aneesh.kumar@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Christophe Leroy <chleroy@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Qi Zheng <qi.zheng@linux.dev>
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgalloc.h | 6 +++---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgalloc.h | 2 +-
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/tlb.h | 2 +-
6 files changed, 8 insertions(+), 5 deletions(-)
--- a/arch/arc/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/include/asm/pgalloc.h
@@ -72,7 +72,7 @@ static inline void p4d_populate(struct m
set_p4d(p4dp, __p4d((unsigned long)pudp));
}
-#define __pud_free_tlb(tlb, pmd, addr) pud_free((tlb)->mm, pmd)
+#define __pud_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
@@ -83,10 +83,10 @@ static inline void pud_populate(struct m
set_pud(pudp, __pud((unsigned long)pmdp));
}
-#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
+#define __pmd_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#endif /* _ASM_ARC_PGALLOC_H */
--- a/arch/arc/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/Kconfig
@@ -47,6 +47,7 @@ config ARC
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE
select MODULES_USE_ELF_RELA
select OF
select OF_EARLY_FLATTREE
--- a/arch/microblaze/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/include/asm/pgalloc.h
@@ -25,7 +25,7 @@ extern void __bad_pte(pmd_t *pmd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
--- a/arch/microblaze/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/Kconfig
@@ -41,6 +41,7 @@ config MICROBLAZE
select PCI_SYSCALL if PCI
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE
+ select MMU_GATHER_RCU_TABLE_FREE
select SPARSE_IRQ
select ZONE_DMA
select TRACE_IRQFLAGS_SUPPORT
--- a/arch/xtensa/include/asm/tlb.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/include/asm/tlb.h
@@ -16,7 +16,7 @@
#include <asm-generic/tlb.h>
-#define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, address) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
void check_tlb_sanity(void);
--- a/arch/xtensa/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/Kconfig
@@ -55,6 +55,7 @@ config XTENSA
select HAVE_VIRT_CPU_ACCOUNTING_GEN
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE if MMU
select MODULES_USE_ELF_RELA
select PERF_USE_VMALLOC
select TRACE_IRQFLAGS_SUPPORT
_
Patches currently in -mm which might be from ljs@kernel.org are
mm-vma-predicate-setting-mmap_prepare-vma-fields-on-new-vma-alloc.patch
mm-mremap-fix-locked_vm-leak-from-mremap_dontunmap-self-merge.patch
mm-mremap-fix-locked_vm-leak-by-splitting-vma-for-mremap_dontunmap.patch
mm-vmpressure-remove-window-size-todo.patch
tools-testing-selftests-mm-add-missing-gitignore-entries.patch
mm-move-drivers-char-memc-to-mm-char-memc.patch
mm-implement-file_is_dev_zero-to-uniquely-identify-dev-zero.patch
mm-vma-only-permit-map_private-dev-zero-to-be-mapped-anonymous.patch
mm-vma-make-map_private-mapped-dev-zero-mappings-truly-anonymous.patch
tools-testing-vma-add-test-to-assert-map_private-dev-zero-is-anon.patch
tools-testing-selftests-mm-add-map_private-dev-zero-merge-tests.patch
mm-madvise-swap-in-cowd-map_private-file-mappings-on-madv_willneed.patch
a.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-coldfire.patch
mm-enable-mmu_gather_rcu_table_free-for-sh-x2.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-motorola.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc32.patch
mm-make-userland-page-table-freeing-rcu-safe.patch
mm-change-the-contract-for-free_pgtables-update-docs.patch
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_kernel_owned-predicates.patch
mm-vma-only-allow-mmap-to-clear-vma_maywrite_bit-if-kernel-owned.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-only-kernel-owned-mappings-may-set-vma_io_bit.patch
mm-remove-vma_io_bit-check-in-vma_is_kernel_owned.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_persistent.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-introduce-and-use-vma_can_gup.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
^ permalink raw reply [flat|nested] 3+ messages in thread* [to-be-updated] mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch removed from -mm tree
@ 2026-09-23 19:39 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2026-09-23 19:39 UTC (permalink / raw)
To: mm-commits, ljs, akpm
The quilt patch titled
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
has been removed from the -mm tree. Its filename was
mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch
This patch was dropped because an updated version will be issued
------------------------------------------------------
From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
Date: Fri, 11 Sep 2026 20:36:52 +0100
Each of these architectures directly free page tables without routing
these changes through tlb_remove_ptdesc().
The use of tlb_remove_ptdesc() is required for
CONFIG_MMU_GATHER_RCU_TABLE_FREE to correctly free page tables under RCU,
so simply update these architectures to use these functions.
Since none of the architectures share page tables or do anything unusual,
nothing complicated is required here.
Therefore this is simply a mechanical change - convert __pud_free_tlb(),
__pmd_free_tlb() and __pte_free_tlb() to use tlb_remove_ptdesc() as
required.
At the point this is in place, all mmu_gather page table freeing is
performed under RCU, and thus MMU_GATHER_RCU_TABLE_FREE is selected for
each architecture.
Note that CONFIG_MMU_GATHER_RCU_TABLE_FREE is dependent on CONFIG_MMU for
xtensa to reflect the fact that nommu does not implement page table
gathering.
This forms part of an overall effort to switch every architecture to this
mode.
Link: https://lore.kernel.org/20260911-rcu-pagetable-freeing-v3-5-7b8c86103821@kernel.org
Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Bottomley <james.bottomley@HansenPartnership.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Zi Yan <ziy@nvidia.com>
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgalloc.h | 6 +++---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgalloc.h | 2 +-
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/tlb.h | 2 +-
6 files changed, 8 insertions(+), 5 deletions(-)
--- a/arch/arc/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/include/asm/pgalloc.h
@@ -72,7 +72,7 @@ static inline void p4d_populate(struct m
set_p4d(p4dp, __p4d((unsigned long)pudp));
}
-#define __pud_free_tlb(tlb, pmd, addr) pud_free((tlb)->mm, pmd)
+#define __pud_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
@@ -83,10 +83,10 @@ static inline void pud_populate(struct m
set_pud(pudp, __pud((unsigned long)pmdp));
}
-#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
+#define __pmd_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#endif /* _ASM_ARC_PGALLOC_H */
--- a/arch/arc/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/Kconfig
@@ -47,6 +47,7 @@ config ARC
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE
select MODULES_USE_ELF_RELA
select OF
select OF_EARLY_FLATTREE
--- a/arch/microblaze/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/include/asm/pgalloc.h
@@ -25,7 +25,7 @@ extern void __bad_pte(pmd_t *pmd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
--- a/arch/microblaze/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/Kconfig
@@ -41,6 +41,7 @@ config MICROBLAZE
select PCI_SYSCALL if PCI
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE
+ select MMU_GATHER_RCU_TABLE_FREE
select SPARSE_IRQ
select ZONE_DMA
select TRACE_IRQFLAGS_SUPPORT
--- a/arch/xtensa/include/asm/tlb.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/include/asm/tlb.h
@@ -16,7 +16,7 @@
#include <asm-generic/tlb.h>
-#define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, address) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
void check_tlb_sanity(void);
--- a/arch/xtensa/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/Kconfig
@@ -55,6 +55,7 @@ config XTENSA
select HAVE_VIRT_CPU_ACCOUNTING_GEN
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE if MMU
select MODULES_USE_ELF_RELA
select PERF_USE_VMALLOC
select TRACE_IRQFLAGS_SUPPORT
_
Patches currently in -mm which might be from ljs@kernel.org are
mm-vma-predicate-setting-mmap_prepare-vma-fields-on-new-vma-alloc.patch
mm-mremap-fix-locked_vm-leak-from-mremap_dontunmap-self-merge.patch
mm-mremap-fix-locked_vm-leak-by-splitting-vma-for-mremap_dontunmap.patch
mm-vmpressure-remove-window-size-todo.patch
tools-testing-selftests-mm-add-missing-gitignore-entries.patch
mm-move-drivers-char-memc-to-mm-char-memc.patch
mm-implement-file_is_dev_zero-to-uniquely-identify-dev-zero.patch
mm-vma-only-permit-map_private-dev-zero-to-be-mapped-anonymous.patch
mm-vma-make-map_private-mapped-dev-zero-mappings-truly-anonymous.patch
tools-testing-vma-add-test-to-assert-map_private-dev-zero-is-anon.patch
tools-testing-selftests-mm-add-map_private-dev-zero-merge-tests.patch
mm-madvise-swap-in-cowd-map_private-file-mappings-on-madv_willneed.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-coldfire.patch
mm-enable-mmu_gather_rcu_table_free-for-sh-x2.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-motorola.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc32.patch
mm-make-userland-page-table-freeing-rcu-safe.patch
mm-change-the-contract-for-free_pgtables-update-docs.patch
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_kernel_owned-predicates.patch
mm-vma-only-allow-mmap-to-clear-vma_maywrite_bit-if-kernel-owned.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-only-kernel-owned-mappings-may-set-vma_io_bit.patch
mm-remove-vma_io_bit-check-in-vma_is_kernel_owned.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_persistent.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-introduce-and-use-vma_can_gup.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
^ permalink raw reply [flat|nested] 3+ messages in thread* [to-be-updated] mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch removed from -mm tree
@ 2026-09-16 1:55 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2026-09-16 1:55 UTC (permalink / raw)
To: mm-commits, ljs, akpm
The quilt patch titled
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
has been removed from the -mm tree. Its filename was
mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch
This patch was dropped because an updated version will be issued
------------------------------------------------------
From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
Subject: mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa
Date: Tue, 08 Sep 2026 13:32:14 +0100
Each of these architectures directly free page tables without routing
these changes through tlb_remove_ptdesc().
The use of tlb_remove_ptdesc() is required for
CONFIG_MMU_GATHER_RCU_TABLE_FREE to correctly free page tables under RCU,
so simply update these architectures to use these functions.
Since none of the architectures share page tables or do anything unusual,
nothing complicated is required here.
Therefore this is simply a mechanical change - convert __pud_free_tlb(),
__pmd_free_tlb() and __pte_free_tlb() to use tlb_remove_ptdesc() as
required.
At the point this is in place, all mmu_gather page table freeing is
performed under RCU, and thus MMU_GATHER_RCU_TABLE_FREE is selected for
each architecture.
Note that CONFIG_MMU_GATHER_RCU_TABLE_FREE is dependent on CONFIG_MMU for
xtensa to reflect the fact that nommu does not implement page table
gathering.
This forms part of an overall effort to switch every architecture to this
mode.
Link: https://lore.kernel.org/20260908-rcu-pagetable-freeing-v2-5-1f60b64e878e@kernel.org
Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Bottomley <james.bottomley@HansenPartnership.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Marc Rutland <mark.rutland@arm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Zi Yan <ziy@nvidia.com>
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgalloc.h | 6 +++---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgalloc.h | 2 +-
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/tlb.h | 2 +-
6 files changed, 8 insertions(+), 5 deletions(-)
--- a/arch/arc/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/include/asm/pgalloc.h
@@ -72,7 +72,7 @@ static inline void p4d_populate(struct m
set_p4d(p4dp, __p4d((unsigned long)pudp));
}
-#define __pud_free_tlb(tlb, pmd, addr) pud_free((tlb)->mm, pmd)
+#define __pud_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
@@ -83,10 +83,10 @@ static inline void pud_populate(struct m
set_pud(pudp, __pud((unsigned long)pmdp));
}
-#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
+#define __pmd_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd))
#endif
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#endif /* _ASM_ARC_PGALLOC_H */
--- a/arch/arc/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/arc/Kconfig
@@ -47,6 +47,7 @@ config ARC
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE
select MODULES_USE_ELF_RELA
select OF
select OF_EARLY_FLATTREE
--- a/arch/microblaze/include/asm/pgalloc.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/include/asm/pgalloc.h
@@ -25,7 +25,7 @@ extern void __bad_pte(pmd_t *pmd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
+#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
--- a/arch/microblaze/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/microblaze/Kconfig
@@ -41,6 +41,7 @@ config MICROBLAZE
select PCI_SYSCALL if PCI
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE
+ select MMU_GATHER_RCU_TABLE_FREE
select SPARSE_IRQ
select ZONE_DMA
select TRACE_IRQFLAGS_SUPPORT
--- a/arch/xtensa/include/asm/tlb.h~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/include/asm/tlb.h
@@ -16,7 +16,7 @@
#include <asm-generic/tlb.h>
-#define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte)
+#define __pte_free_tlb(tlb, pte, address) tlb_remove_ptdesc((tlb), page_ptdesc(pte))
void check_tlb_sanity(void);
--- a/arch/xtensa/Kconfig~mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa
+++ a/arch/xtensa/Kconfig
@@ -55,6 +55,7 @@ config XTENSA
select HAVE_VIRT_CPU_ACCOUNTING_GEN
select IRQ_DOMAIN
select LOCK_MM_AND_FIND_VMA
+ select MMU_GATHER_RCU_TABLE_FREE if MMU
select MODULES_USE_ELF_RELA
select PERF_USE_VMALLOC
select TRACE_IRQFLAGS_SUPPORT
_
Patches currently in -mm which might be from ljs@kernel.org are
mm-vmpressure-remove-window-size-todo.patch
tools-testing-selftests-mm-add-missing-gitignore-entries.patch
mm-move-drivers-char-memc-to-mm-char-memc.patch
mm-implement-file_is_dev_zero-to-uniquely-identify-dev-zero.patch
mm-vma-only-permit-map_private-dev-zero-to-be-mapped-anonymous.patch
mm-vma-make-map_private-mapped-dev-zero-mappings-truly-anonymous.patch
tools-testing-vma-add-test-to-assert-map_private-dev-zero-is-anon.patch
tools-testing-selftests-mm-add-map_private-dev-zero-merge-tests.patch
mm-madvise-swap-in-cowd-map_private-file-mappings-on-madv_willneed.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc64.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-coldfire.patch
mm-enable-mmu_gather_rcu_table_free-for-sh-x2.patch
mm-enable-mmu_gather_rcu_table_free-for-m68k-motorola.patch
mm-enable-mmu_gather_rcu_table_free-for-sparc32.patch
mm-make-userland-page-table-freeing-rcu-safe.patch
mm-change-the-contract-for-free_pgtables-update-docs.patch
mm-vma-fix-mmap_prepare-file-handling-remove-file_doesnt_need_get.patch
mm-vma-predicate-setting-mmap_prepare-vma-fields-on-new-vma-alloc.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_kernel_owned-predicates.patch
mm-vma-only-allow-mmap-to-clear-vma_maywrite_bit-if-kernel-owned.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-only-kernel-owned-mappings-may-set-vma_io_bit.patch
mm-remove-vma_io_bit-check-in-vma_is_kernel_owned.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_persistent.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-introduce-and-use-vma_can_gup.patch
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-09-25 22:22 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2026-09-25 22:22 [to-be-updated] mm-enable-mmu_gather_rcu_table_free-for-arc-microblaze-xtensa.patch removed from -mm tree Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2026-09-23 19:39 Andrew Morton
2026-09-16 1:55 Andrew Morton
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