From patchwork Thu Sep 21 07:51:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 725066 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9F1EE7D0A2 for ; Thu, 21 Sep 2023 19:48:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231318AbjIUTsz (ORCPT ); Thu, 21 Sep 2023 15:48:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231176AbjIUTsj (ORCPT ); Thu, 21 Sep 2023 15:48:39 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8EFD5AE0E; Thu, 21 Sep 2023 10:49:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695318597; x=1726854597; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HLs/ywkVSkJpE/INyHkcYbZLt51jl1NpNcocQh3S+kQ=; b=b3wAXUZ+xzHEP72tboWpIYZ38QCfbR+V3gNXGM41oBZFGuFSZDbkXn9s 04nr9sDJKXQ84zDcl+YD8pUIyHXl7yfiMnPa20b9v+aiXZ2RjdwW91Rdq 1lFFmYc2YSSuP7VzwN/jlfjU7OC3A56UPR05WCSdielen/NHpnxMqYlIp owXLAYGd8EeuiJRlpqWO/N+m2/0M3vvHaNHDSsKjIjnxn0mDxVq4QPsT1 uedHQNttp9A/v0DCUWGTOBNpMDmlCQ8jaR7gEuBxuvPRnIoKGzgSBFefE eyf7tS+eu14b/zQAaItxJN6rNmlzrTXE/EQY815e+K1hS84LgSeKWXSE3 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="359833003" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="359833003" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2023 00:52:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="723649593" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="723649593" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga006.jf.intel.com with ESMTP; 21 Sep 2023 00:52:20 -0700 From: Yi Liu To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.com, baolu.lu@linux.intel.com Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, zhenzhong.duan@intel.com, joao.m.martins@oracle.com Subject: [PATCH v4 17/17] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Date: Thu, 21 Sep 2023 00:51:38 -0700 Message-Id: <20230921075138.124099-18-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230921075138.124099-1-yi.l.liu@intel.com> References: <20230921075138.124099-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Nicolin Chen Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using the new IOMMU_TEST_OP_MD_CHECK_IOTLB. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- tools/testing/selftests/iommu/iommufd.c | 61 +++++++++++++++++++ tools/testing/selftests/iommu/iommufd_utils.h | 36 +++++++++++ 2 files changed, 97 insertions(+) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index c59299248a98..617e11153761 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -116,6 +116,7 @@ TEST_F(iommufd, cmd_length) TEST_LENGTH(iommu_destroy, IOMMU_DESTROY, id); TEST_LENGTH(iommu_hw_info, IOMMU_GET_HW_INFO, __reserved); TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC, __reserved); + TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE, out_driver_error_code); TEST_LENGTH(iommu_ioas_alloc, IOMMU_IOAS_ALLOC, out_ioas_id); TEST_LENGTH(iommu_ioas_iova_ranges, IOMMU_IOAS_IOVA_RANGES, out_iova_alignment); @@ -271,7 +272,9 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested) struct iommu_hwpt_selftest data = { .iotlb = IOMMU_TEST_IOTLB_DEFAULT, }; + struct iommu_hwpt_invalidate_selftest inv_reqs[2] = {0}; uint32_t nested_hwpt_id[2] = {}; + uint32_t num_inv, driver_error; uint32_t parent_hwpt_id = 0; uint32_t parent_hwpt_id_not_work = 0; uint32_t test_hwpt_id = 0; @@ -342,6 +345,64 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested) EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, parent_hwpt_id)); + /* hwpt_invalidate only supports a user-managed hwpt (nested) */ + num_inv = 1; + test_err_hwpt_invalidate(EINVAL, parent_hwpt_id, inv_reqs, + sizeof(*inv_reqs), &num_inv, NULL); + /* Negative test: structure size sanity */ + num_inv = 1; + test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs, + sizeof(*inv_reqs) + 1, &num_inv, + &driver_error); + assert(driver_error == IOMMU_TEST_INVALIDATE_ERR_FETCH); + + num_inv = 1; + test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs, + 1, &num_inv, &driver_error); + assert(driver_error == IOMMU_TEST_INVALIDATE_ERR_FETCH); + + /* Invalidate the 1st iotlb entry but fail the 2nd request */ + num_inv = 2; + inv_reqs[0].iotlb_id = 0; + inv_reqs[1].iotlb_id = MOCK_NESTED_DOMAIN_IOTLB_ID_MAX + 1; + test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs, + sizeof(*inv_reqs), &num_inv, + &driver_error); + assert(num_inv == 1); + assert(driver_error == IOMMU_TEST_INVALIDATE_ERR_REQ); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0, 0); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 1, + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 2, + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 3, + IOMMU_TEST_IOTLB_DEFAULT); + + /* Invalidate the 2nd iotlb entry and verify */ + num_inv = 1; + inv_reqs[0].iotlb_id = 1; + test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs, + sizeof(*inv_reqs), &num_inv); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0, 0); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 1, 0); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 2, + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 3, + IOMMU_TEST_IOTLB_DEFAULT); + /* Invalidate the 3rd and 4th iotlb entries and verify */ + num_inv = 2; + inv_reqs[0].iotlb_id = 2; + inv_reqs[1].iotlb_id = 3; + test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs, + sizeof(*inv_reqs), &num_inv); + test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[0], 0); + /* Invalidate all iotlb entries for nested_hwpt_id[1] and verify */ + num_inv = 1; + inv_reqs[0].flags = IOMMU_TEST_INVALIDATE_ALL; + test_cmd_hwpt_invalidate(nested_hwpt_id[1], inv_reqs, + sizeof(*inv_reqs), &num_inv); + test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[1], 0); + /* Attach device to nested_hwpt_id[0] that then will be busy */ test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id[0]); diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 2bc41e9a69e8..55906c5da1a9 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -169,6 +169,42 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, test_cmd_hwpt_check_iotlb(hwpt_id, i, expected); \ }) +static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id, void *reqs, + uint32_t lreq, uint32_t *nreqs, + uint32_t *driver_error) +{ + struct iommu_hwpt_invalidate cmd = { + .size = sizeof(cmd), + .hwpt_id = hwpt_id, + .reqs_uptr = (uint64_t)reqs, + .req_len = lreq, + .req_num = *nreqs, + }; + int rc = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd); + *nreqs = cmd.req_num; + if (driver_error) + *driver_error = cmd.out_driver_error_code; + return rc; +} + +#define test_cmd_hwpt_invalidate(hwpt_id, reqs, lreq, nreqs) \ + ({ \ + uint32_t error, num = *nreqs; \ + ASSERT_EQ(0, \ + _test_cmd_hwpt_invalidate(self->fd, hwpt_id, reqs, \ + lreq, nreqs, &error)); \ + assert(num == *nreqs); \ + assert(error == 0); \ + }) +#define test_err_hwpt_invalidate(_errno, hwpt_id, reqs, lreq, nreqs, \ + driver_error) \ + ({ \ + EXPECT_ERRNO(_errno, \ + _test_cmd_hwpt_invalidate(self->fd, hwpt_id, \ + reqs, lreq, nreqs, \ + driver_error)); \ + }) + static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id) {