From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vishal Moola (Oracle)" Subject: [PATCH mm-unstable v9 00/31] Split ptdesc from struct page Date: Mon, 7 Aug 2023 16:04:42 -0700 Message-ID: <20230807230513.102486-1-vishal.moola@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=vmx7KeDa7i2yfbxW1AEAxUZspF6evvkjdouITdCZaQM=; b=YfoPMUGv0ipWP9 wR7AYU/YVzfZEEtH7q/UgoDzml2a8kcH37s72HCqsHH4WT4SL8/kYUFwg32dWCer3c34nBWiPCAxN F0VzsZ802q8E3ulQ0PfxYlXJhzoe8GuFVrZgIYbe6GWvv5vhPDVtHexT5x+xDugZM+HsAvXfLOalp h8sMiouR15jcbazjFjHz5Q4x6PZgRKTR4JqsaU6Gwep8l9bvRW0F5Fawq1hzQKvtzvexrBBPll67M FhcHYDRBf6FseTMpaabEI/ZD33Un4Kcx3ZpxG5rpmjj6RdE1dcGzukkkwhj2+OfUAe2cUuc9GVc80 ZfJS6+iQxb18AaUKAbQg==; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691449518; x=1692054318; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=BgGe0Il0C7dlkrriaFCN0meYItalZZUDKy884yxXSME=; b=kkOLGueMrzxHvvdT5O8JIC8nC89W6/6UqoBnx7sB0VLAWpoO0/QHm5tLARAi96zyvU EAiiieHkpJTC9s5qvXPj39j6R2OQuCyqiEOwPTIq50/LHvV7fjReDxpsCX5Ya8M70FRF Bv+KZVFj7Mytss2brk2EH7Z9tHAP9yxEVCzntaEZzdSmQz9vPa1mUTDeJlBFV79lhO4m YdB4aoA79x9pkxJ/XBt7ZG1CR58HGrAi0v/zgewNhzm8aq6TJsefwLnAAAHjOqkPytFk EiZRzEbAgPBMpklpMOtlFM2muNSx1qBww2MBrDwGN8Akv7FqeHgJ4R5d3wn1SAH6io9W CEdA== List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+glud-user-mode-linux-devel=m.gmane-mx.org@lists.infradead.org To: Andrew Morton , Matthew Wilcox Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Hugh Dickins , "Vishal Moola (Oracle)" , Catalin Marinas , Huacai Chen , Geert Uytterhoeven , Thomas Bogendoerfer , Dinh Nguyen , Jonas Bonn , David Hildenbrand , Claudio 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 applies cleanly onto the current unstable after dropping v8 of this series. v9: Fix build errors for NOMMU configs - trying to define ptdesc before spinlock_t and struct page were defined. Moved definition of struct ptdesc to include/linux/mm_types.h instead include/linux/pgtable.h Vishal Moola (Oracle) (31): mm: Add PAGE_TYPE_OP folio functions pgtable: create struct ptdesc mm: add utility functions for ptdesc mm: Convert pmd_pgtable_page() callers to use 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 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 | 7 +- 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 | 47 +++--- arch/m68k/include/asm/sun3_pgalloc.h | 8 +- arch/m68k/mm/motorola.c | 4 +- arch/mips/include/asm/pgalloc.h | 32 ++-- arch/mips/mm/pgtable.c | 8 +- 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 | 58 +++---- 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/pgalloc.c | 128 +++++++-------- arch/sh/include/asm/pgalloc.h | 9 +- 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 | 47 +++--- arch/x86/xen/mmu_pv.c | 2 +- include/asm-generic/pgalloc.h | 88 +++++----- include/asm-generic/tlb.h | 11 ++ include/linux/mm.h | 151 +++++++++++++----- include/linux/mm_types.h | 97 ++++++++--- include/linux/page-flags.h | 30 +++- mm/memory.c | 8 +- 37 files changed, 585 insertions(+), 385 deletions(-) -- 2.40.1