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{ "id": 2195545, "url": "http://patchwork.ozlabs.org/api/covers/2195545/?format=api", "web_url": "http://patchwork.ozlabs.org/project/sparclinux/cover/20260211103141.3215197-1-rppt@kernel.org/", "project": { "id": 10, "url": "http://patchwork.ozlabs.org/api/projects/10/?format=api", "name": "Linux SPARC Development ", "link_name": "sparclinux", "list_id": "sparclinux.vger.kernel.org", "list_email": "sparclinux@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260211103141.3215197-1-rppt@kernel.org>", "list_archive_url": null, "date": "2026-02-11T10:31:37", "name": "[v3,0/4] arch, mm: consolidate empty_zero_page", "submitter": { "id": 77733, "url": "http://patchwork.ozlabs.org/api/people/77733/?format=api", "name": "Mike Rapoport", "email": "rppt@kernel.org" }, "mbox": "http://patchwork.ozlabs.org/project/sparclinux/cover/20260211103141.3215197-1-rppt@kernel.org/mbox/", "series": [ { "id": 491817, "url": "http://patchwork.ozlabs.org/api/series/491817/?format=api", "web_url": "http://patchwork.ozlabs.org/project/sparclinux/list/?series=491817", "date": "2026-02-11T10:31:37", "name": "arch, mm: consolidate empty_zero_page", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/491817/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2195545/comments/", "headers": { "Return-Path": "\n <SRS0=AjA3=AP=vger.kernel.org=sparclinux+bounces-6258-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "sparclinux@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=PV/jXKpF;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1770805918; c=relaxed/simple;\n\tbh=BzPjss/o79E8vniYif3vhWCcMbpnh+bfpm0PwJifv0s=;\n\th=From:To:Cc:Subject:Date:Message-ID:MIME-Version;\n b=jmv2jHLmeJuF5BG5+KKQuxvf6IRbdDStOrO1nfmBXkheEmbZmfIAPC0Ze5U9afl5u9j5bmxNmb37NhxdjnbNk5HJTDFv8bGB0Oh+4tBMzSzAvKE3utdUKVe8kI1ZyFGOSw7mizXbP1NKOQopy5fYZbBlevpsNqsr+eg5emz57+c=" ], "ARC-Authentication-Results": [ "i=2; gandalf.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=PV/jXKpF; dkim-atps=neutral;\n spf=pass (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=sparclinux+bounces-6258-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org) smtp.mailfrom=vger.kernel.org", "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=PV/jXKpF; arc=none smtp.client-ip=10.30.226.201" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1770805918;\n\tbh=BzPjss/o79E8vniYif3vhWCcMbpnh+bfpm0PwJifv0s=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=PV/jXKpFwT8Fev+iuIdzwDQGCp1d9tQZwQOxpL0LXiHzOkF4CIyDk3VR8KHKDtHPW\n\t 95broCDwDG6FDa0dsrh08bvjDtJvEVi+8U3bdfQGt0/3GFehuGtNXEfr5rcfZqIyHe\n\t 4Gas0OFpDJ0b6cdfz9zvpAFeNg4A3xRSvqWBEmxAoCac9/v12nM5/tozP4vCWoIt3t\n\t WM1Df8XDDZbZ4yrkjS35IzQoTegVuVT5cx/AIkgGipbvq47QF+8iCUbZqSYaNcR9kd\n\t /L0GUWtHeBli4O4MUGnMTsxwsezchH/soEQNYXQrx3YIGnwJ/R226FAA4/HIBChyBn\n\t bpfII91wxqjeA==", "From": "Mike Rapoport <rppt@kernel.org>", "To": "Andrew Morton <akpm@linux-foundation.org>", "Cc": "Andreas Larsson <andreas@gaisler.com>,\n\tBorislav Petkov <bp@alien8.de>,\n\tBrian Cain <bcain@kernel.org>,\n\tCatalin Marinas <catalin.marinas@arm.com>,\n\t\"Christophe Leroy (CS GROUP)\" <chleroy@kernel.org>,\n\t\"David S. Miller\" <davem@davemloft.net>,\n\tDave Hansen <dave.hansen@linux.intel.com>,\n\tDavid Hildenbrand <david@kernel.org>,\n\tDinh Nguyen <dinguyen@kernel.org>,\n\tGeert Uytterhoeven <geert@linux-m68k.org>,\n\tGuo Ren <guoren@kernel.org>,\n\tHelge Deller <deller@gmx.de>,\n\tHuacai Chen <chenhuacai@kernel.org>,\n\tIngo Molnar <mingo@redhat.com>,\n\tJohannes Berg <johannes@sipsolutions.net>,\n\tJohn Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,\n\t\"Liam R. Howlett\" <Liam.Howlett@oracle.com>,\n\tLorenzo Stoakes <lorenzo.stoakes@oracle.com>,\n\tMadhavan Srinivasan <maddy@linux.ibm.com>,\n\tMagnus Lindholm <linmag7@gmail.com>,\n\tMatt Turner <mattst88@gmail.com>,\n\tMax Filippov <jcmvbkbc@gmail.com>,\n\tMichael Ellerman <mpe@ellerman.id.au>,\n\tMichal Hocko <mhocko@suse.com>,\n\tMichal Simek <monstr@monstr.eu>,\n\tMike Rapoport <rppt@kernel.org>,\n\tPalmer Dabbelt <palmer@dabbelt.com>,\n\tRichard Weinberger <richard@nod.at>,\n\tRussell King <linux@armlinux.org.uk>,\n\tStafford Horne <shorne@gmail.com>,\n\tSuren Baghdasaryan <surenb@google.com>,\n\tThomas Gleixner <tglx@kernel.org>,\n\tVineet Gupta <vgupta@kernel.org>,\n\tVlastimil Babka <vbabka@suse.cz>,\n\tWill Deacon <will@kernel.org>,\n\tlinux-alpha@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-snps-arc@lists.infradead.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-csky@vger.kernel.org,\n\tlinux-hexagon@vger.kernel.org,\n\tloongarch@lists.linux.dev,\n\tlinux-m68k@lists.linux-m68k.org,\n\tlinux-openrisc@vger.kernel.org,\n\tlinux-parisc@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-sh@vger.kernel.org,\n\tsparclinux@vger.kernel.org,\n\tlinux-um@lists.infradead.org,\n\tlinux-mm@kvack.org,\n\tx86@kernel.org", "Subject": "[PATCH v3 0/4] arch, mm: consolidate empty_zero_page", "Date": "Wed, 11 Feb 2026 12:31:37 +0200", "Message-ID": "<20260211103141.3215197-1-rppt@kernel.org>", "X-Mailer": "git-send-email 2.51.0", "Precedence": "bulk", "X-Mailing-List": "sparclinux@vger.kernel.org", "List-Id": "<sparclinux.vger.kernel.org>", "List-Subscribe": "<mailto:sparclinux+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:sparclinux+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "From: \"Mike Rapoport (Microsoft)\" <rppt@kernel.org>\n\nHi,\n\nThese patches cleanup handling of ZERO_PAGE() and zero_pfn.\n\nv3 changes:\n* move zero_page_pfn extern declaration back inside the helpers\n* add tags, thanks all!\n\nv2: https://lore.kernel.org/all/20260209144058.2092871-1-rppt@kernel.org\n* add patches that cleanup zero_pfn code a bit (patches 1,2)\n* add a patch that caches struct page for empty_zero_page (patch 4)\n* use uint8_t instead of unsigned long for empty_zero_page\n* fix sparc64 changes in patch 3\n\nv1: https://lore.kernel.org/all/20260124095628.668870-1-rppt@kernel.org\n\nMike Rapoport (Microsoft) (4):\n mm: don't special case !MMU for is_zero_pfn() and my_zero_pfn()\n mm: rename my_zero_pfn() to zero_pfn()\n arch, mm: consolidate empty_zero_page\n mm: cache struct page for empty_zero_page and return it from ZERO_PAGE()\n\n arch/alpha/include/asm/pgtable.h | 6 ---\n arch/arc/include/asm/pgtable.h | 3 --\n arch/arc/mm/init.c | 2 -\n arch/arm/include/asm/pgtable.h | 9 -----\n arch/arm/mm/mmu.c | 7 ----\n arch/arm/mm/nommu.c | 7 ----\n arch/arm64/include/asm/pgtable.h | 7 ----\n arch/arm64/mm/init.c | 5 +++\n arch/arm64/mm/mmu.c | 7 ----\n arch/csky/include/asm/pgtable.h | 3 --\n arch/csky/mm/init.c | 3 --\n arch/hexagon/include/asm/pgtable.h | 6 ---\n arch/hexagon/kernel/head.S | 5 ---\n arch/hexagon/kernel/hexagon_ksyms.c | 1 -\n arch/loongarch/include/asm/pgtable.h | 9 -----\n arch/loongarch/mm/init.c | 3 --\n arch/m68k/include/asm/pgtable_mm.h | 9 -----\n arch/m68k/include/asm/pgtable_no.h | 7 ----\n arch/m68k/mm/init.c | 9 -----\n arch/m68k/mm/mcfmmu.c | 2 -\n arch/m68k/mm/motorola.c | 6 ---\n arch/m68k/mm/sun3mmu.c | 2 -\n arch/microblaze/include/asm/pgtable.h | 10 -----\n arch/microblaze/kernel/head.S | 4 --\n arch/microblaze/kernel/microblaze_ksyms.c | 2 -\n arch/mips/mm/init.c | 11 +-----\n arch/nios2/include/asm/pgtable.h | 7 ----\n arch/nios2/kernel/head.S | 10 -----\n arch/nios2/kernel/nios2_ksyms.c | 1 -\n arch/openrisc/include/asm/pgtable.h | 4 --\n arch/openrisc/kernel/head.S | 3 --\n arch/openrisc/kernel/or32_ksyms.c | 1 -\n arch/openrisc/mm/init.c | 3 --\n arch/parisc/include/asm/pgtable.h | 11 ------\n arch/parisc/mm/init.c | 6 ---\n arch/powerpc/include/asm/pgtable.h | 6 ---\n arch/powerpc/mm/mem.c | 3 --\n arch/riscv/include/asm/pgtable.h | 7 ----\n arch/riscv/mm/init.c | 4 --\n arch/s390/mm/init.c | 4 +-\n arch/sh/include/asm/pgtable.h | 8 ----\n arch/sh/include/asm/setup.h | 3 +-\n arch/sh/kernel/head_32.S | 4 +-\n arch/sh/kernel/sh_ksyms_32.c | 1 -\n arch/sh/mm/init.c | 1 -\n arch/sparc/include/asm/pgtable_32.h | 8 ----\n arch/sparc/include/asm/pgtable_64.h | 3 --\n arch/sparc/include/asm/setup.h | 2 -\n arch/sparc/kernel/head_32.S | 7 ----\n arch/sparc/mm/init_32.c | 4 --\n arch/sparc/mm/init_64.c | 24 +++++-------\n arch/um/include/asm/pgtable.h | 9 -----\n arch/um/include/shared/kern_util.h | 1 -\n arch/um/kernel/mem.c | 16 --------\n arch/um/kernel/um_arch.c | 1 -\n arch/x86/include/asm/pgtable.h | 8 ----\n arch/x86/kernel/head_32.S | 4 --\n arch/x86/kernel/head_64.S | 7 ----\n arch/x86/kvm/mmu/spte.h | 2 +-\n arch/xtensa/include/asm/pgtable.h | 4 --\n arch/xtensa/kernel/head.S | 3 --\n arch/xtensa/kernel/xtensa_ksyms.c | 2 -\n fs/dax.c | 2 +-\n fs/proc/vmcore.c | 2 +-\n include/linux/pgtable.h | 48 ++++++++++++++---------\n mm/huge_memory.c | 2 +-\n mm/memory.c | 15 +------\n mm/migrate.c | 2 +-\n mm/mm_init.c | 28 +++++++++++++\n mm/userfaultfd.c | 4 +-\n 70 files changed, 86 insertions(+), 354 deletions(-)\n\n\nbase-commit: 50c7f34c5c7403a12003c6759f6f6ca9a5a10872\n--\n2.51.0\n\n*** BLURB HERE ***\n\nMike Rapoport (Microsoft) (4):\n mm: don't special case !MMU for is_zero_pfn() and my_zero_pfn()\n mm: rename my_zero_pfn() to zero_pfn()\n arch, mm: consolidate empty_zero_page\n mm: cache struct page for empty_zero_page and return it from\n ZERO_PAGE()\n\n arch/alpha/include/asm/pgtable.h | 6 ---\n arch/arc/include/asm/pgtable.h | 3 --\n arch/arc/mm/init.c | 2 -\n arch/arm/include/asm/pgtable.h | 9 ----\n arch/arm/mm/mmu.c | 7 ----\n arch/arm/mm/nommu.c | 7 ----\n arch/arm64/include/asm/pgtable.h | 7 ----\n arch/arm64/mm/init.c | 5 +++\n arch/arm64/mm/mmu.c | 7 ----\n arch/csky/include/asm/pgtable.h | 3 --\n arch/csky/mm/init.c | 3 --\n arch/hexagon/include/asm/pgtable.h | 6 ---\n arch/hexagon/kernel/head.S | 5 ---\n arch/hexagon/kernel/hexagon_ksyms.c | 1 -\n arch/loongarch/include/asm/pgtable.h | 9 ----\n arch/loongarch/mm/init.c | 3 --\n arch/m68k/include/asm/pgtable_mm.h | 9 ----\n arch/m68k/include/asm/pgtable_no.h | 7 ----\n arch/m68k/mm/init.c | 9 ----\n arch/m68k/mm/mcfmmu.c | 2 -\n arch/m68k/mm/motorola.c | 6 ---\n arch/m68k/mm/sun3mmu.c | 2 -\n arch/microblaze/include/asm/pgtable.h | 10 -----\n arch/microblaze/kernel/head.S | 4 --\n arch/microblaze/kernel/microblaze_ksyms.c | 2 -\n arch/mips/mm/init.c | 11 +----\n arch/nios2/include/asm/pgtable.h | 7 ----\n arch/nios2/kernel/head.S | 10 -----\n arch/nios2/kernel/nios2_ksyms.c | 1 -\n arch/openrisc/include/asm/pgtable.h | 4 --\n arch/openrisc/kernel/head.S | 3 --\n arch/openrisc/kernel/or32_ksyms.c | 1 -\n arch/openrisc/mm/init.c | 3 --\n arch/parisc/include/asm/pgtable.h | 11 -----\n arch/parisc/mm/init.c | 6 ---\n arch/powerpc/include/asm/pgtable.h | 6 ---\n arch/powerpc/mm/mem.c | 3 --\n arch/riscv/include/asm/pgtable.h | 7 ----\n arch/riscv/mm/init.c | 4 --\n arch/s390/mm/init.c | 4 +-\n arch/sh/include/asm/pgtable.h | 8 ----\n arch/sh/include/asm/setup.h | 3 +-\n arch/sh/kernel/head_32.S | 4 +-\n arch/sh/kernel/sh_ksyms_32.c | 1 -\n arch/sh/mm/init.c | 1 -\n arch/sparc/include/asm/pgtable_32.h | 8 ----\n arch/sparc/include/asm/pgtable_64.h | 3 --\n arch/sparc/include/asm/setup.h | 2 -\n arch/sparc/kernel/head_32.S | 7 ----\n arch/sparc/mm/init_32.c | 4 --\n arch/sparc/mm/init_64.c | 24 ++++-------\n arch/um/include/asm/pgtable.h | 9 ----\n arch/um/include/shared/kern_util.h | 1 -\n arch/um/kernel/mem.c | 16 -------\n arch/um/kernel/um_arch.c | 1 -\n arch/x86/include/asm/pgtable.h | 8 ----\n arch/x86/kernel/head_32.S | 4 --\n arch/x86/kernel/head_64.S | 7 ----\n arch/x86/kvm/mmu/spte.h | 2 +-\n arch/xtensa/include/asm/pgtable.h | 4 --\n arch/xtensa/kernel/head.S | 3 --\n arch/xtensa/kernel/xtensa_ksyms.c | 2 -\n fs/dax.c | 2 +-\n fs/proc/vmcore.c | 2 +-\n include/linux/pgtable.h | 51 +++++++++++++++--------\n mm/huge_memory.c | 2 +-\n mm/memory.c | 15 +------\n mm/migrate.c | 2 +-\n mm/mm_init.c | 28 +++++++++++++\n mm/userfaultfd.c | 4 +-\n 70 files changed, 89 insertions(+), 354 deletions(-)\n\n\nbase-commit: 50c7f34c5c7403a12003c6759f6f6ca9a5a10872\n--\n2.51.0" }