[PATCH 00/12] mm: make userland page table freeing RCU-safe · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Jason Gunthorpe <jgg@ziepe.ca> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Liam R. Howlett" <liam@infradead.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Jason Gunthorpe <jgg@ziepe.ca> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period · "Liam R. Howlett" <liam@infradead.org> · 2026-09-01
[PATCH 02/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for most 2-level architectures · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 03/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for MMU riscv · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 04/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for MMU arm · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 05/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 06/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc64 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 07/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-coldfire · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 08/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sh-X2 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 09/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-motorola · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 10/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc32 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 11/12] mm: make userland page table freeing RCU-safe · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 11/12] mm: make userland page table freeing RCU-safe · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 11/12] mm: make userland page table freeing RCU-safe · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
[PATCH 12/12] mm: change the contract for free_pgtables(), update docs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 12/12] mm: change the contract for free_pgtables(), update docs · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 12/12] mm: change the contract for free_pgtables(), update docs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01
Re: [PATCH 12/12] mm: change the contract for free_pgtables(), update docs · Kiryl Shutsemau <kas@kernel.org> · 2026-09-01
Re: [PATCH 12/12] mm: change the contract for free_pgtables(), update docs · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 2026-09-01

Re: [PATCH 11/12] mm: make userland page table freeing RCU-safe

From: Kiryl Shutsemau <kas@kernel.org>
Date: 2026-09-01 13:33:38
Also in: linux-alpha, linux-arch, linux-m68k, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linux-um, lkml, loongarch, sparclinux

On Tue, Sep 01, 2026 at 12:01:31PM +0100, Lorenzo Stoakes (ARM) wrote:

With this change in place the kernel policy is now that all page tables are

s/all/userspace/ as subject implies?

BTW, what is your take on kernel page tables? Do we want the same policy
there. pagetable_free_kernel() is not RCU-safe as it is.

freed after an RCU grace period, and thus it is now safe to unconditionally
perform page table walks under RCU, safe in the knowledge that page tables
will not be freed underneath the walker.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov

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