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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0617EC6FD18 for ; Wed, 19 Apr 2023 10:59:01 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Q1d843Npzz3fTY for ; Wed, 19 Apr 2023 20:59:00 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20221208 header.b=pldku0ys; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::62e; helo=mail-pl1-x62e.google.com; envelope-from=vishal.moola@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20221208 header.b=pldku0ys; dkim-atps=neutral Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Q0fQ937Ykz3c46 for ; Tue, 18 Apr 2023 06:52:48 +1000 (AEST) Received: by mail-pl1-x62e.google.com with SMTP id o2so27328169plg.4 for ; Mon, 17 Apr 2023 13:52:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681764765; x=1684356765; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=hd0eSPgOtTAWwT17PjaULR/3wkbhGTdpKJdeXsj3/Vw=; b=pldku0ysKEp0NOEJOd7l0dIaF0yyGvAqpPlnmph3EM3Z2d65YTU4pF9c8hRBI8SIkB bXZgcndrjQg15zyEZxLW+H7cAmzYTJGKbe6hTNRu88cjrehCSqACdUD1N8GZKEqBE4Xp FwmFpHRnoIb29o3voauSnQ6p7drjWK4VEEwhJEits2ZcgZwb7+ryqE7mhLT9s2Dr91lB 24kMEEC0owKF37MtG1/RM5nwSQTWlS0iZbYOKzR4iyZZCfaJAgJ4qZTiCg2KEwK1Bku2 sGcyojF3egYr4Kr1rOZRroFrhK9ZnYopo4hTv+rSWBcsF96wp6BJQzFP7J0YdZ6544dh BRmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681764765; x=1684356765; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=hd0eSPgOtTAWwT17PjaULR/3wkbhGTdpKJdeXsj3/Vw=; b=g3RoU5U+uEhuJ47XnMahc/tGudI1OYb0Y2GmOz0FnAPkcfGolhUevjb0nY2TdG589Z fTA4U8M9Qhyt7nAu73zgbP16OE2AlC97JhHqMeoyaNjeNGi0kwXiF+Na74p7Wm5UqqvC qgXJ8Hbd8e1nzPoJ4RzXHgqeIwS3tA1gZ/lLC22Bg4wG4LsEBrY1xOjWxYG4FbdDls5M arn02BuXuFuJaIpHFF4njqqBVbwfMyZ+CGoDh43vb3OYvo3HjiEoyCBQWOmt66SKHLPM R27RxlspQotVHEedmwsBGuTSlvur/X7eBY8XBkj261/fqID6pkkQEE5RIIgA5VlKh+a5 OyHg== X-Gm-Message-State: AAQBX9ev7M4YNB/93m24UQI0K7stPG4AKq1ZI4bdyrNZTMuVf/rJQEYB rAR3KtWccX/bTOySlMftMaE= X-Google-Smtp-Source: AKy350bJ4sdY66hQiY/gbzNJFaJpsyj9BEPw5KYAOTG4tZNrVmb2RliejTZYzbSXKDavSzAED/FXaQ== X-Received: by 2002:a17:90b:684:b0:246:f8a8:af02 with SMTP id m4-20020a17090b068400b00246f8a8af02mr15620340pjz.5.1681764765269; Mon, 17 Apr 2023 13:52:45 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::c139]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm7609707pjt.22.2023.04.17.13.52.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:52:44 -0700 (PDT) From: "Vishal Moola (Oracle)" To: Andrew Morton , Matthew Wilcox Subject: [PATCH 00/33] Split ptdesc from struct page Date: Mon, 17 Apr 2023 13:50:15 -0700 Message-Id: <20230417205048.15870-1-vishal.moola@gmail.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Wed, 19 Apr 2023 20:57:19 +1000 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-mips@vger.kernel.org, linux-csky@vger.kernel.org, "Vishal Moola \(Oracle\)" , linux-mm@kvack.org, linux-m68k@lists.linux-m68k.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The MM subsystem is trying to shrink struct page. This patchset introduces a memory descriptor for page table tracking - struct ptdesc. This patchset introduces ptdesc, splits ptdesc from struct page, and converts many callers of page table constructor/destructors to use ptdescs. Ptdesc is a foundation to further standardize page tables, and eventually allow for dynamic allocation of page tables independent of struct page. However, the use of pages for page table tracking is quite deeply ingrained and varied across archictectures, so there is still a lot of work to be done before that can happen. This series is rebased on next-20230417. Vishal Moola (Oracle) (33): s390: Use _pt_s390_gaddr for gmap address tracking s390: Use pt_frag_refcount for pagetables pgtable: Create struct ptdesc mm: add utility functions for ptdesc mm: Convert pmd_pgtable_page() to pmd_ptdesc() mm: Convert ptlock_alloc() to use ptdescs mm: Convert ptlock_ptr() to use ptdescs mm: Convert pmd_ptlock_init() to use ptdescs mm: Convert ptlock_init() to use ptdescs mm: Convert pmd_ptlock_free() to use ptdescs mm: Convert ptlock_free() to use ptdescs mm: Create ptdesc equivalents for pgtable_{pte,pmd}_page_{ctor,dtor} powerpc: Convert various functions to use ptdescs x86: Convert various functions to use ptdescs s390: Convert various gmap functions to use ptdescs s390: Convert various pgalloc functions to use ptdescs mm: Remove page table members from struct page pgalloc: Convert various functions to use ptdescs arm: Convert various functions to use ptdescs arm64: Convert various functions to use ptdescs csky: Convert __pte_free_tlb() to use ptdescs hexagon: Convert __pte_free_tlb() to use ptdescs loongarch: Convert various functions to use ptdescs m68k: Convert various functions to use ptdescs mips: Convert various functions to use ptdescs nios2: Convert __pte_free_tlb() to use ptdescs openrisc: Convert __pte_free_tlb() to use ptdescs riscv: Convert alloc_{pmd, pte}_late() to use ptdescs sh: Convert pte_free_tlb() to use ptdescs sparc64: Convert various functions to use ptdescs sparc: Convert pgtable_pte_page_{ctor, dtor}() to ptdesc equivalents um: Convert {pmd, pte}_free_tlb() to use ptdescs mm: Remove pgtable_{pmd, pte}_page_{ctor, dtor}() wrappers Documentation/mm/split_page_table_lock.rst | 12 +- .../zh_CN/mm/split_page_table_lock.rst | 14 +- arch/arm/include/asm/tlb.h | 12 +- arch/arm/mm/mmu.c | 6 +- arch/arm64/include/asm/tlb.h | 14 +- arch/arm64/mm/mmu.c | 7 +- arch/csky/include/asm/pgalloc.h | 4 +- arch/hexagon/include/asm/pgalloc.h | 8 +- arch/loongarch/include/asm/pgalloc.h | 27 ++- arch/loongarch/mm/pgtable.c | 7 +- arch/m68k/include/asm/mcf_pgalloc.h | 41 ++-- arch/m68k/include/asm/sun3_pgalloc.h | 8 +- arch/m68k/mm/motorola.c | 4 +- arch/mips/include/asm/pgalloc.h | 31 +-- arch/mips/mm/pgtable.c | 7 +- arch/nios2/include/asm/pgalloc.h | 8 +- arch/openrisc/include/asm/pgalloc.h | 8 +- arch/powerpc/mm/book3s64/mmu_context.c | 10 +- arch/powerpc/mm/book3s64/pgtable.c | 32 +-- arch/powerpc/mm/pgtable-frag.c | 46 ++-- arch/riscv/include/asm/pgalloc.h | 8 +- arch/riscv/mm/init.c | 16 +- arch/s390/include/asm/pgalloc.h | 4 +- arch/s390/include/asm/tlb.h | 4 +- arch/s390/mm/gmap.c | 218 +++++++++++------- arch/s390/mm/pgalloc.c | 126 +++++----- arch/sh/include/asm/pgalloc.h | 8 +- arch/sparc/mm/init_64.c | 17 +- arch/sparc/mm/srmmu.c | 5 +- arch/um/include/asm/pgalloc.h | 18 +- arch/x86/mm/pgtable.c | 46 ++-- arch/x86/xen/mmu_pv.c | 2 +- include/asm-generic/pgalloc.h | 62 +++-- include/asm-generic/tlb.h | 11 + include/linux/mm.h | 138 +++++++---- include/linux/mm_types.h | 14 -- include/linux/pgtable.h | 60 +++++ mm/memory.c | 8 +- 38 files changed, 625 insertions(+), 446 deletions(-) -- 2.39.2