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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D9DCC10DCE for ; Tue, 24 Mar 2020 05:23:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DD9E520714 for ; Tue, 24 Mar 2020 05:23:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD9E520714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 4E9E66B00CC; Tue, 24 Mar 2020 01:23:21 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 49AEB6B00CD; Tue, 24 Mar 2020 01:23:21 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3B0136B00CE; Tue, 24 Mar 2020 01:23:21 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0139.hostedemail.com [216.40.44.139]) by kanga.kvack.org (Postfix) with ESMTP id 2078C6B00CC for ; Tue, 24 Mar 2020 01:23:21 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 4FB6B186A2AC8 for ; Tue, 24 Mar 2020 05:23:21 +0000 (UTC) X-FDA: 76629112602.07.coast47_3a52e2e166202 X-HE-Tag: coast47_3a52e2e166202 X-Filterd-Recvd-Size: 5477 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Tue, 24 Mar 2020 05:23:20 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4CB3F30E; Mon, 23 Mar 2020 22:23:19 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.1.71]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6AE573F7C3; Mon, 23 Mar 2020 22:27:15 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org Cc: christophe.leroy@c-s.fr, Anshuman Khandual , Jonathan Corbet , Andrew Morton , Mike Rapoport , Vineet Gupta , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "Kirill A . Shutemov" , Paul Walmsley , Palmer Dabbelt , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-riscv@lists.infradead.org, x86@kernel.org, linux-doc@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 0/3] mm/debug: Add more arch page table helper tests Date: Tue, 24 Mar 2020 10:52:52 +0530 Message-Id: <1585027375-9997-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This series adds more arch page table helper tests. The new tests here are either related to core memory functions and advanced arch pgtable helpers. This also creates a documentation file enlisting all expected semantics as suggested by Mike Rapoport (https://lkml.org/lkml/2020/1/30/40). This series has been tested on arm64 and x86 platforms. There is just one expected failure on arm64 that will be fixed when we enable THP migration. [ 21.741634] WARNING: CPU: 0 PID: 1 at mm/debug_vm_pgtable.c:782 which corresponds to WARN_ON(!pmd_present(pmd_mknotpresent(pmd_mkhuge(pmd)))) There are many TRANSPARENT_HUGEPAGE and ARCH_HAS_TRANSPARENT_HUGEPAGE_PUD ifdefs scattered across the test. But consolidating all the fallback stubs is not very straight forward because ARCH_HAS_TRANSPARENT_HUGEPAGE_PUD is not explicitly dependent on ARCH_HAS_TRANSPARENT_HUGEPAGE. This series has been build tested on many platforms including the ones that subscribe the test through ARCH_HAS_DEBUG_VM_PGTABLE. This series is based on v5.6-rc7 after applying these following patches. 1. https://patchwork.kernel.org/patch/11431277/ 2. https://patchwork.kernel.org/patch/11452185/ Changes in V2: - Dropped CONFIG_ARCH_HAS_PTE_SPECIAL per Christophe - Dropped CONFIG_NUMA_BALANCING per Christophe - Dropped CONFIG_HAVE_ARCH_SOFT_DIRTY per Christophe - Dropped CONFIG_MIGRATION per Christophe - Replaced CONFIG_S390 with __HAVE_ARCH_PMDP_INVALIDATE - Moved page allocation & free inside swap_migration_tests() per Christophe - Added CONFIG_TRANSPARENT_HUGEPAGE to protect pfn_pmd() - Added CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD to protect pfn_pud() - Added a patch for other arch advanced page table helper tests - Added a patch creating a documentation for page table helper semantics Changes in V1: (https://patchwork.kernel.org/patch/11408253/) Cc: Jonathan Corbet Cc: Andrew Morton Cc: Mike Rapoport Cc: Vineet Gupta Cc: Catalin Marinas Cc: Will Deacon Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Christian Borntraeger Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Kirill A. Shutemov Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: linux-riscv@lists.infradead.org Cc: x86@kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (3): mm/debug: Add tests validating arch page table helpers for core features mm/debug: Add tests validating arch advanced page table helpers Documentation/mm: Add descriptions for arch page table helpers Documentation/vm/arch_pgtable_helpers.rst | 256 ++++++++++ mm/debug_vm_pgtable.c | 594 +++++++++++++++++++++- 2 files changed, 839 insertions(+), 11 deletions(-) create mode 100644 Documentation/vm/arch_pgtable_helpers.rst -- 2.20.1