From patchwork Mon Jan 13 22:46:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ralph Campbell X-Patchwork-Id: 208967 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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 4AAD8C33CB1 for ; Mon, 13 Jan 2020 22:47:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 20136207FD for ; Mon, 13 Jan 2020 22:47:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="G2bgbXRr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729031AbgAMWrQ (ORCPT ); Mon, 13 Jan 2020 17:47:16 -0500 Received: from hqnvemgate25.nvidia.com ([216.228.121.64]:2241 "EHLO hqnvemgate25.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728998AbgAMWrO (ORCPT ); Mon, 13 Jan 2020 17:47:14 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 13 Jan 2020 14:46:53 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 13 Jan 2020 14:47:13 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 13 Jan 2020 14:47:13 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 13 Jan 2020 22:47:13 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 13 Jan 2020 22:47:08 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 13 Jan 2020 22:47:08 +0000 Received: from rcampbell-dev.nvidia.com (Not Verified[10.110.48.66]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 13 Jan 2020 14:47:08 -0800 From: Ralph Campbell To: , , , , CC: Jerome Glisse , John Hubbard , Christoph Hellwig , Jason Gunthorpe , "Andrew Morton" , Ben Skeggs , "Shuah Khan" , Ralph Campbell Subject: [PATCH v6 0/6] mm/hmm/test: add self tests for HMM Date: Mon, 13 Jan 2020 14:46:57 -0800 Message-ID: <20200113224703.5917-1-rcampbell@nvidia.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-NVConfidentiality: public DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1578955613; bh=GtpVYgdrH9GxiIGh9Ju0Oa4D1/CloNN687n7bW51geE=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: MIME-Version:X-NVConfidentiality:Content-Type: Content-Transfer-Encoding; b=G2bgbXRrumJ9A88wz6mE4JJ7Gzk1rL3W8o+1IzpRatJMghAXqlQAcjYG4GoZXLTUY Zl1Z/PkXEA/ZDikV03KCxAiGNMf73l1Hnw+JW6gkpNLgtMmW6aeyWVvEMGb6FKscU1 frNn5LL0g0jEG/lNnbAwhn8BynbC/L6ozsEY741EuJdx5IoxP8IuTez3doFSGslby0 zrX4HtGtIsW95XUSsLHHr8w8Xeh/+nV+NELgdEYU764cSL7A8NgZjZm3csFElmca0G IOCi+LRa6Eek1trM6R72m6YhG+HUN0ozgZoeOiaI2NwNb1lSVSkwj8CEe4HTWhv9uk CcNaroREM9Zqw== Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This series adds new functions to the mmu interval notifier API to allow device drivers with MMUs to dynamically mirror a process' page tables based on device faults and invalidation callbacks. The Nouveau driver is updated to use the extended API and a set of stand alone self tests is added to help validate and maintain correctness. The patches are based on linux-5.5.0-rc6 and are for Jason's rdma/hmm tree since I believe he is planning some interval notifier changes. Changes v5 -> v6: Rebase to linux-5.5.0-rc6 Refactored mmu interval notifier patches Converted nouveau to use the new mmu interval notifier API Changes v4 -> v5: Added mmu interval notifier insert/remove/update callable from the invalidate() callback Updated HMM tests to use the new core interval notifier API Changes v1 -> v4: https://lore.kernel.org/linux-mm/20191104222141.5173-1-rcampbell@nvidia.com Ralph Campbell (6): mm/mmu_notifier: add mmu_interval_notifier_insert_safe() mm/mmu_notifier: add mmu_interval_notifier_put() mm/notifier: add mmu_interval_notifier_update() mm/mmu_notifier: add mmu_interval_notifier_find() nouveau: use new mmu interval notifiers mm/hmm/test: add self tests for HMM MAINTAINERS | 3 + drivers/gpu/drm/nouveau/nouveau_svm.c | 313 ++++-- include/linux/mmu_notifier.h | 29 + lib/Kconfig.debug | 11 + lib/Makefile | 1 + lib/test_hmm.c | 1368 ++++++++++++++++++++++++ mm/mmu_notifier.c | 223 +++- tools/testing/selftests/vm/.gitignore | 1 + tools/testing/selftests/vm/Makefile | 3 + tools/testing/selftests/vm/config | 2 + tools/testing/selftests/vm/hmm-tests.c | 1354 +++++++++++++++++++++++ tools/testing/selftests/vm/run_vmtests | 16 + tools/testing/selftests/vm/test_hmm.sh | 97 ++ 13 files changed, 3289 insertions(+), 132 deletions(-) create mode 100644 lib/test_hmm.c create mode 100644 tools/testing/selftests/vm/hmm-tests.c create mode 100755 tools/testing/selftests/vm/test_hmm.sh