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Wed, 23 Sep 2026 09:13:09 +0000 X-Mizu-Trace-ID: ad223138143f3bbe X-Migadu-Flow: FLOW_OUT From: Lance Yang To: ljs@kernel.org Cc: akpm@linux-foundation.org, david@kernel.org, ziy@nvidia.com, baolin.wang@linux.alibaba.com, liam@infradead.org, nico.pache@linux.dev, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, usama.arif@linux.dev, kas@kernel.org, guoren@kernel.org, bcain@kernel.org, geert@linux-m68k.org, dinguyen@kernel.org, schuster.simon@siemens-energy.com, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, dalias@libc.org, glaubitz@physik.fu-berlin.de, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, linux@armlinux.org.uk, vgupta@kernel.org, monstr@monstr.eu, chris@zankel.net, jcmvbkbc@gmail.com, will@kernel.org, aneesh.kumar@kernel.org, npiggin@gmail.com, peterz@infradead.org, davem@davemloft.net, andreas@gaisler.com, richard.henderson@linaro.org, mattst88@gmail.com, linmag7@gmail.com, catalin.marinas@arm.com, mark.rutland@arm.com, chenhuacai@kernel.org, kernel@xen0n.name, tsbogend@alpha.franken.de, James.Bottomley@HansenPartnership.com, deller@gmx.de, maddy@linux.ibm.com, mpe@ellerman.id.au, chleroy@kernel.org, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, jgg@ziepe.ca, jhubbard@nvidia.com, peterx@redhat.com, ysato@users.sourceforge.jp, shakeel.butt@linux.dev, corbet@lwn.net, rdunlap@infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-openrisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-snps-arc@lists.infradead.org, linux-arch@vger.kernel.org, sparclinux@vger.kernel.org, linux-alpha@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, hughd@google.com, qi.zheng@linux.dev, linux-doc@vger.kernel.org Subject: Re: [PATCH v4 07/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-coldfire Date: Wed, 23 Sep 2026 17:13:03 +0800 Message-ID: <20260923091303.19671-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20260922-rcu-pagetable-freeing-v4-7-fe1ad1f1e303@kernel.org> References: <20260922-rcu-pagetable-freeing-v4-7-fe1ad1f1e303@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: 3ijg9soto5zx7i4b8nfpcfbutgx34hqa X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 661A6C0002 X-HE-Tag: 1790154795-933121 X-HE-Meta: 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 lhC+iciS Tcv8JKIhNCKKTfcW3Jk9dAKVAPqWVXF5IuLlc9946/LrBb/fJFFRD2eF9qSJU+/GOyzlooh0bcDcy2sEa7i7xgZS2+h+MhPNwvKfQJHFOPBQ4QMO+uuQ7L8WR7rgYzjxa1jybkJdLOwPb28XYV1KnqtnY/0iqDVzAVSatZ87Ab0DPLA3E+LtkD+t6raMICqt2J4HBAAuAUbTO5GQS7SqWmo6BIddBN1X5v2KBK3IhaD9Lrtoz4clVcqb/g7IpIhfdQ/FDtUw4u+Ub+SRDHG3iKh1eA52qSYb78+alFIlOKS0fFkknDYRUH61vzpkqqy8LH9fAnmR9l1DzHlkBQNm5HIF9FmkszVNWCGhwmJra7UojukACQu6O+8JYQWs7FhpFk36i Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Sep 22, 2026 at 04:35:38PM +0100, Lorenzo Stoakes (ARM) wrote: >Similar to sun3, the coldfire variant of m68k uses 2-level page tables. > >Update its __pte_free_tlb() function to use tlb_remove_ptdesc() in order >that, with CONFIG_MMU_GATHER_RCU_TABLE_FREE, page tables are freed under >RCU. > >The page tables occupy a page each and have no odd semantics, so this >change suffices to allow enabling of CONFIG_MMU_GATHER_RCU_TABLE_FREE for >m68k-coldfire, so do so. > >This forms part of an overall effort to switch every architecture to this >mode. > >Acked-by: Kiryl Shutsemau (Meta) >Signed-off-by: Lorenzo Stoakes (ARM) >--- Yep, ColdFire PTE freeing now goes through tlb_remove_ptdesc() :) Feel free to add: Acked-by: Lance Yang