From patchwork Thu Sep 21 07:51:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13394408 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 D871DE7D0A2 for ; Thu, 21 Sep 2023 19:36:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbjIUTg7 (ORCPT ); Thu, 21 Sep 2023 15:36:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54560 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229798AbjIUTgz (ORCPT ); Thu, 21 Sep 2023 15:36:55 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2917F49F7; Thu, 21 Sep 2023 10:49:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695318596; x=1726854596; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8IS/ASlzbqKpd5WSnRHltdzVLjrxm5nAvbgy9B03xM8=; b=h3eRW2qNIAXD/o5ROA+nq7owl2PZu7xZUf85HcGVJGXJtAYLVf6sYozS RG0Vlf0YV30kugI2DBZWTNH1U9G2p2YmYCEPniMoes9G/oXqwIIPfJY2g ytjt5aSB1f0PvarKBU22Ho0Z2mi9E/hgGh+/a8J6GOIzK8Zlkeg7SIWhi XLRTsNDyzlCYZdneWuDep+swI0vPabAs+QXfzazhaaxCn7rIKufk+/kX6 bOIDPtvajXVH1NcjiUptrB25Iac/JPTfcb5LuY13Pvt1rLDO77E0Tx0/p gD3lJjV5Gt4NPrAWFS1FB3CJKAIE01PHRzEgadP/i89WqfhcDzpPbsEK+ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="359832960" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="359832960" 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 00:52:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="723649582" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="723649582" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga006.jf.intel.com with ESMTP; 21 Sep 2023 00:52:18 -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 14/17] iommufd/selftest: Add coverage for IOMMU_HWPT_ALLOC with nested HWPTs Date: Thu, 21 Sep 2023 00:51:35 -0700 Message-Id: <20230921075138.124099-15-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 The IOMMU_HWPT_ALLOC ioctl now supports passing user_data to allocate a user-managed domain for nested HWPTs. Add its coverage for that. Also, update _test_cmd_hwpt_alloc() and add test_cmd/err_hwpt_alloc_nested(). Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- tools/testing/selftests/iommu/iommufd.c | 115 ++++++++++++++++++ .../selftests/iommu/iommufd_fail_nth.c | 3 +- tools/testing/selftests/iommu/iommufd_utils.h | 31 +++-- 3 files changed, 141 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 7a29d68bd1d2..db5e59e4abab 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -264,6 +264,121 @@ TEST_F(iommufd_ioas, ioas_destroy) } } +TEST_F(iommufd_ioas, alloc_hwpt_nested) +{ + const uint32_t min_data_len = + offsetofend(struct iommu_hwpt_selftest, iotlb); + struct iommu_hwpt_selftest data = { + .iotlb = IOMMU_TEST_IOTLB_DEFAULT, + }; + uint32_t nested_hwpt_id[2] = {}; + uint32_t parent_hwpt_id = 0; + uint32_t parent_hwpt_id_not_work = 0; + uint32_t test_hwpt_id = 0; + + if (self->device_id) { + /* Negative tests */ + test_err_hwpt_alloc(ENOENT, self->ioas_id, self->device_id, + 0, &test_hwpt_id); + test_err_hwpt_alloc(EINVAL, self->device_id, + self->device_id, 0, &test_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, + &parent_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, + 0, &parent_hwpt_id_not_work); + + /* Negative nested tests */ + test_err_hwpt_alloc_nested(EINVAL, + self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_DEFAULT, + &data, sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, + self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, min_data_len - 1); + test_err_hwpt_alloc_nested(EFAULT, + self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + NULL, sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, + self->device_id, parent_hwpt_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, + &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id_not_work, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + + /* Allocate two nested hwpts sharing one common parent hwpt */ + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[1], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + + /* Negative test: a nested hwpt on top of a nested hwpt */ + test_err_hwpt_alloc_nested(EINVAL, + self->device_id, nested_hwpt_id[0], + 0, &test_hwpt_id, + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + /* Negative test: parent hwpt now cannot be freed */ + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, parent_hwpt_id)); + + /* Attach device to nested_hwpt_id[0] that then will be busy */ + test_cmd_mock_domain_replace(self->stdev_id, + nested_hwpt_id[0]); + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, nested_hwpt_id[0])); + + /* Switch from nested_hwpt_id[0] to nested_hwpt_id[1] */ + test_cmd_mock_domain_replace(self->stdev_id, + nested_hwpt_id[1]); + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, nested_hwpt_id[1])); + test_ioctl_destroy(nested_hwpt_id[0]); + + /* Detach from nested_hwpt_id[1] and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, parent_hwpt_id); + test_ioctl_destroy(nested_hwpt_id[1]); + + /* Detach from the parent hw_pagetable and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id); + test_ioctl_destroy(parent_hwpt_id); + test_ioctl_destroy(parent_hwpt_id_not_work); + } else { + test_err_hwpt_alloc(ENOENT, self->device_id, self->ioas_id, + 0, &parent_hwpt_id); + test_err_hwpt_alloc_nested(ENOENT, + self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + test_err_hwpt_alloc_nested(ENOENT, + self->device_id, parent_hwpt_id, + 0, &nested_hwpt_id[1], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + test_err_mock_domain_replace(ENOENT, + self->stdev_id, nested_hwpt_id[0]); + test_err_mock_domain_replace(ENOENT, + self->stdev_id, nested_hwpt_id[1]); + } +} + TEST_F(iommufd_ioas, hwpt_attach) { /* Create a device attached directly to a hwpt */ diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c index 3d7838506bfe..d3f47f262c04 100644 --- a/tools/testing/selftests/iommu/iommufd_fail_nth.c +++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c @@ -615,7 +615,8 @@ TEST_FAIL_NTH(basic_fail_nth, device) if (_test_cmd_get_hw_info(self->fd, idev_id, &info, sizeof(info))) return -1; - if (_test_cmd_hwpt_alloc(self->fd, idev_id, ioas_id, 0, &hwpt_id)) + if (_test_cmd_hwpt_alloc(self->fd, idev_id, ioas_id, 0, &hwpt_id, + IOMMU_HWPT_TYPE_DEFAULT, 0, 0)) return -1; if (_test_cmd_mock_domain_replace(self->fd, stdev_id, ioas_id2, NULL)) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index be4970a84977..21d7c7e53bd4 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -103,13 +103,17 @@ static int _test_cmd_mock_domain_replace(int fd, __u32 stdev_id, __u32 pt_id, pt_id, NULL)) static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, - __u32 flags, __u32 *hwpt_id) + __u32 flags, __u32 *hwpt_id, __u32 hwpt_type, + void *data, size_t data_len) { struct iommu_hwpt_alloc cmd = { .size = sizeof(cmd), .flags = flags, .dev_id = device_id, .pt_id = pt_id, + .hwpt_type = hwpt_type, + .data_len = data_len, + .data_uptr = (uint64_t)data, }; int ret; @@ -121,12 +125,25 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, return 0; } -#define test_cmd_hwpt_alloc(device_id, pt_id, flags, hwpt_id) \ - ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, \ - pt_id, flags, hwpt_id)) -#define test_err_hwpt_alloc(_errno, device_id, pt_id, flags, hwpt_id) \ - EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc(self->fd, device_id, \ - pt_id, flags, hwpt_id)) +#define test_cmd_hwpt_alloc(device_id, pt_id, flags, hwpt_id) \ + ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, IOMMU_HWPT_TYPE_DEFAULT, \ + NULL, 0)) +#define test_err_hwpt_alloc(_errno, device_id, pt_id, flags, hwpt_id) \ + EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, \ + flags, hwpt_id, \ + IOMMU_HWPT_TYPE_DEFAULT, \ + NULL, 0)) + +#define test_cmd_hwpt_alloc_nested(device_id, pt_id, flags, hwpt_id, \ + hwpt_type, data, data_len) \ + ASSERT_EQ(0, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, hwpt_type, data, data_len)) +#define test_err_hwpt_alloc_nested(_errno, device_id, pt_id, flags, hwpt_id, \ + hwpt_type, data, data_len) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ + hwpt_id, hwpt_type, data, data_len)) static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id)