From patchwork Thu May 11 14:38:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 681058 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 46D38C7EE2A for ; Thu, 11 May 2023 14:43:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238537AbjEKOnB (ORCPT ); Thu, 11 May 2023 10:43:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238465AbjEKOmf (ORCPT ); Thu, 11 May 2023 10:42:35 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C096211569; Thu, 11 May 2023 07:38:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683815935; x=1715351935; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=AB/V+lOcmgiua42crOM5BnIdwENlAyxry4E4lQjQqZw=; b=Rr3708i8GzoJIrkMtm5IHsfGcqxS2VgOenRPnfdqoz3VpUQYeAmSy0UU mmXgqlu6yYZNTMYiY8UeI2lGZ73Y2OIeu+1yRz/xuRr2u2Uki2hKJSISV ud8sDhUIRTNlv9d3T5dbFGa0P0Rh6Vas7nchFoan+enzcoADgyURgtZ1J dAivKkhJDD/MX9YzeGURvHBAUOiwvzwv+WwuNXe2fFscoGEFBr46Z3cdr 4DtcGhODOMsyCuHIVr22miCzgVhkiZBn6CuSw4XFrRuux0dlFgU39JyqP /T3tkZFDHj8DEZz0ZT04AM/cnRX9xHeNxsf4NF0rb1LEB37Dd3ZgffG3j g==; X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="339812989" X-IronPort-AV: E=Sophos;i="5.99,266,1677571200"; d="scan'208";a="339812989" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2023 07:38:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="730382644" X-IronPort-AV: E=Sophos;i="5.99,266,1677571200"; d="scan'208";a="730382644" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga008.jf.intel.com with ESMTP; 11 May 2023 07:38:54 -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 Subject: [PATCH v2 11/11] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Date: Thu, 11 May 2023 07:38:44 -0700 Message-Id: <20230511143844.22693-12-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230511143844.22693-1-yi.l.liu@intel.com> References: <20230511143844.22693-1-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 a mock_domain_cache_invalidate_user() and a corresponding struct iommu_hwpt_invalidate_selftest, to allow to test IOMMU_HWPT_INVALIDATE from user space, by using the new IOMMU_TEST_OP_MD_CHECK_IOTLB. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- drivers/iommu/iommufd/iommufd_test.h | 10 ++++++++++ drivers/iommu/iommufd/selftest.c | 19 ++++++++++++++++++ tools/testing/selftests/iommu/iommufd.c | 8 ++++++++ tools/testing/selftests/iommu/iommufd_utils.h | 20 +++++++++++++++++++ 4 files changed, 57 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index ec904931df69..c5ca69bd07d1 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -129,4 +129,14 @@ struct iommu_hwpt_selftest { __u64 test_config; }; +/** + * struct iommu_hwpt_invalidate_selftest + * + * @flags: invalidate flags + */ +struct iommu_hwpt_invalidate_selftest { +#define IOMMU_TEST_INVALIDATE_ALL (1ULL << 0) + __u64 flags; +}; + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 57530e7d9524..3c0051442b4d 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -362,9 +362,28 @@ static const struct iommu_ops mock_ops = { }, }; +static int mock_domain_cache_invalidate_user(struct iommu_domain *domain, + void *user_data) +{ + struct iommu_hwpt_invalidate_selftest *inv_info = user_data; + struct mock_iommu_domain *mock = + container_of(domain, struct mock_iommu_domain, domain); + + if (domain->type != IOMMU_DOMAIN_NESTED || !mock->parent) + return -EINVAL; + + if (inv_info->flags & IOMMU_TEST_INVALIDATE_ALL) + mock->iotlb = 0; + + return 0; +} + static struct iommu_domain_ops domain_nested_ops = { .free = mock_domain_free, .attach_dev = mock_domain_nop_attach, + .cache_invalidate_user = mock_domain_cache_invalidate_user, + .cache_invalidate_user_data_len = + sizeof(struct iommu_hwpt_invalidate_selftest), }; static struct iommu_device mock_iommu_device = { diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index afbe23cecb54..031e222cebf9 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -123,6 +123,7 @@ TEST_F(iommufd, cmd_length) TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS); TEST_LENGTH(iommu_hw_info, IOMMU_DEVICE_GET_HW_INFO); TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC); + TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE); #undef TEST_LENGTH } @@ -323,6 +324,13 @@ TEST_F(iommufd_ioas, nested_hwpt_alloc) EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, parent_hwpt_id)); + /* hwpt_invalidate only supports a user-managed hwpt (nested) */ + test_err_cmd_hwpt_invalidate(EINVAL, parent_hwpt_id); + test_cmd_hwpt_invalidate(nested_hwpt_id[0]); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], 0); + test_cmd_hwpt_invalidate(nested_hwpt_id[1]); + test_cmd_hwpt_check_iotlb(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 7d9efe3f7e0d..fef17fb46160 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -169,6 +169,26 @@ static int _test_cmd_hwpt_alloc_nested(int fd, __u32 device_id, __u32 parent_id, _test_cmd_hwpt_alloc_nested(self->fd, device_id, \ parent_id, hwpt_id)) +static int _test_cmd_hwpt_invalidate(int fd, __u32 hwpt_id) +{ + struct iommu_hwpt_invalidate_selftest data = { + .flags = IOMMU_TEST_INVALIDATE_ALL, + }; + struct iommu_hwpt_invalidate cmd = { + .size = sizeof(cmd), + .hwpt_id = hwpt_id, + .data_len = sizeof(data), + .data_uptr = (uint64_t)&data, + }; + + return ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd); +} + +#define test_cmd_hwpt_invalidate(hwpt_id) \ + ASSERT_EQ(0, _test_cmd_hwpt_invalidate(self->fd, hwpt_id)) +#define test_err_cmd_hwpt_invalidate(_errno, hwpt_id) \ + EXPECT_ERRNO(_errno, _test_cmd_hwpt_invalidate(self->fd, hwpt_id)) + static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id) {