From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DC327C79FAE for ; Tue, 8 Sep 2026 12:35:19 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 07C286B009F; Tue, 8 Sep 2026 08:35:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 053DC6B00A0; Tue, 8 Sep 2026 08:35:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EAB826B00A1; Tue, 8 Sep 2026 08:35:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id C6E666B009F for ; Tue, 8 Sep 2026 08:35:18 -0400 (EDT) Received: from smtpin23.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id E6F38A48FB for ; Tue, 8 Sep 2026 12:35:17 +0000 (UTC) X-FDA: 85190540274.23.68714E5 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf21.hostedemail.com (Postfix) with ESMTP id 084EA1C0003 for ; Tue, 8 Sep 2026 12:35:15 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=I6LbB6ot; spf=pass (imf21.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788870916; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=1aimUPxzYaTPXtJhtWkzW57/+8qeslpkAUz+f7GK8/Y=; b=w2DFkE2bP5L954Ns8rY1YqNlC3tEjOE+g0qqUyT1hH7k7qoP5zSWb90MA+AdYUScQpc3om AlDg68a+K7Ua2e3xvUZADLm1TpiR/fJzyZSx8M9tkD2tI9o8bC3Kpr2UBF9HWGfhkhFNEA PDBJYaFZCsN8gYfnwVo3HiNSYloD8qQ= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=I6LbB6ot; spf=pass (imf21.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788870916; b=aJnlwpur7cOK56RfjSrDQ/SwqliCderMYH3Us1vvT4LdtePNc4V8GmCc0uoMWiwgzbBgK/ F47IVnQe0Ttgyem94NOGt69AQXUA7fM0wi4PuEds4hpJSPxp59bZ47QJXYaTwvfnDQiTor jLVDXrsEvAA4Fyr7ycpem+kzUCS6N+g= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 6AB4D40530; Tue, 8 Sep 2026 12:35:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18DD41F00A3D; Tue, 8 Sep 2026 12:34:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788870914; bh=1aimUPxzYaTPXtJhtWkzW57/+8qeslpkAUz+f7GK8/Y=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=I6LbB6otD80LMW/HuVyeFai8n3gqluSGM6nehyfWmXCOaKM9S/MshufQ7eogXVBve jGJhJdROa12fEWl0nF797Az+hVJ4YH6cTsUg1NqCrRniOD2zT6Ij1hHwWMOgtfeyeS +1W3fz2fQD7BodqOWfWqwSpNec0V4XaWpim5gsQCBR23UO0AfreXTja+JU/4rFktQT rtP6P0A0mP2BFZogycCU1HTs+GpT5ypip7Xj4IgOJoM246zg/9rjh+Rwu8OlphRNKb TXMHEQVxVqIjyqFrQPpF26lC+DykmXyZyhPwoXvyrFgCladk3EHATh4//upXLUuRne 6k8NGlX8J90Ug== From: "Lorenzo Stoakes (ARM)" Date: Tue, 08 Sep 2026 13:32:16 +0100 Subject: [PATCH v2 07/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-coldfire MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260908-rcu-pagetable-freeing-v2-7-1f60b64e878e@kernel.org> References: <20260908-rcu-pagetable-freeing-v2-0-1f60b64e878e@kernel.org> In-Reply-To: <20260908-rcu-pagetable-freeing-v2-0-1f60b64e878e@kernel.org> To: Andrew Morton , David Hildenbrand , Zi Yan , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Kiryl Shutsemau , Guo Ren , Brian Cain , Geert Uytterhoeven , Dinh Nguyen , Simon Schuster , Jonas Bonn , Stefan Kristiansson , Stafford Horne , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Russell King , Vineet Gupta , Michal Simek , Chris Zankel , Max Filippov , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Peter Zijlstra , "David S. Miller" , Andreas Larsson , Richard Henderson , Matt Turner , Magnus Lindholm , Catalin Marinas , Mark Rutland , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Madhavan Srinivasan , Michael Ellerman , "Christophe Leroy (CS GROUP)" , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Richard Weinberger , Anton Ivanov , Johannes Berg , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Arnd Bergmann , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jason Gunthorpe , John Hubbard , Peter Xu Cc: 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, Hugh Dickins , Qi Zheng , "Lorenzo Stoakes (ARM)" X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1842; i=ljs@kernel.org; h=from:subject:message-id; bh=qTT+GrBJ7CN/0g7aihQa6c1ZdVlLMdQ0LNJ7aV+6CtQ=; b=owGbwMvMwCV2fu7ZrsZH9SKMp9WSGLIWMMR0eopeWPrQIGCh5x2PfWdLGLf/Y9jrMj2M6e9WQ ekZxp09HaUsDGJcDLJiiizPv4jvDxIJm9d5wd8NZg4rE8gQBi5OAZjIM2mGvzJJmxgnr7RJni1y 2q9h1nNWtUfLc6ZWqM98vfvLDoarJg2MDNOljx+5rHTgyQ7Vu3bX6/hLLKNyMqbr2nwI4TF/HdY UwwMA X-Developer-Key: i=ljs@kernel.org; a=openpgp; fpr=E7F417BF5214569E89D04F46CF9DCD8A81E27F14 X-Rspam-User: X-Stat-Signature: 5mnex8m3zxudmec58hwmrzdc1tzw51mu X-Rspamd-Queue-Id: 084EA1C0003 X-Rspamd-Server: rspam07 X-HE-Tag: 1788870915-165639 X-HE-Meta: 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 lcvSeath Ri21gzh+TXlqENT3MSm54O19FgFAJtG2R7Kh5DQgE3VlmnqwbkiWRAjtEUArWxQk/hVQk/LnhFwdD2BhhSKrtE9FT+pa2c3rsxcky2tc+EjdbjMojniYYPyFFwvzDL9XqqPkG8Ln041h6/B9YCYhdsoej7Vrwf457UEMeXdpQ1UzBYrcpbUBL+e6vFQgePtEdmen7f7brpXwD4D0t8NngusXpQyn76Ykj6dTD2zbZqqWBnFTtOyAP+GhIyxuJ31ji/ol0YbjliUNDRlOkyi6HaOg7oNLUjrK1Ba7THmPaLuQRbm2RY+RHbVLL1PpojTK96TypgRX4dbEEIdXqbJlG2g8KyxskYJvW3jxfULymqpIgZT96THrUwWoonoK4n9P9L+dz5gn/UXkiUPPQ3+41bY5pn9SDZsdylS59lLLxCAIzBXTSsLKZivju9nooeVMGv4oqhXUcy20lqjdQz5F3MCfStFlnBS0tE9xb6CaiGb5xhUg= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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. Signed-off-by: Lorenzo Stoakes (ARM) --- arch/m68k/Kconfig | 2 +- arch/m68k/include/asm/mcf_pgalloc.h | 5 +---- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index e29610fd1240..6b8ec67c86fd 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -36,7 +36,7 @@ config M68K select HAVE_MOD_ARCH_SPECIFIC select HAVE_UID16 select MMU_GATHER_NO_RANGE if MMU - select MMU_GATHER_RCU_TABLE_FREE if MMU && SUN3 + select MMU_GATHER_RCU_TABLE_FREE if MMU && (SUN3 || COLDFIRE) select MODULES_USE_ELF_REL select MODULES_USE_ELF_RELA select NO_DMA if !MMU && !COLDFIRE diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h index fc5454d37da3..b53ff0950db2 100644 --- a/arch/m68k/include/asm/mcf_pgalloc.h +++ b/arch/m68k/include/asm/mcf_pgalloc.h @@ -39,10 +39,7 @@ extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address) static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable, unsigned long address) { - struct ptdesc *ptdesc = virt_to_ptdesc(pgtable); - - pagetable_dtor(ptdesc); - pagetable_free(ptdesc); + tlb_remove_ptdesc(tlb, virt_to_ptdesc(pgtable)); } static inline pgtable_t pte_alloc_one(struct mm_struct *mm) -- 2.55.0