From patchwork Thu Mar 9 08:09:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 661322 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 EEDFFC61DA4 for ; Thu, 9 Mar 2023 08:12:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230296AbjCIIMc (ORCPT ); Thu, 9 Mar 2023 03:12:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230298AbjCIILp (ORCPT ); Thu, 9 Mar 2023 03:11:45 -0500 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A09FE1920; Thu, 9 Mar 2023 00:10:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1678349416; x=1709885416; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HSs8JiamAMJ1gh9lxGGRXZ1q0y+gsHyMnNUluMbRLa8=; b=K/hsj44bLUfPrQUrZIp4mlpojTGJresxyjijhNXYOKRx8+HzzTx7lD2c fN+E+l/VA6jIzctitsx9Rbopu4dh+23aqr+MGAjeJxQUOasaoSni9Hm7q BU0UokrhzCh27SeC/s7TPD154azcp6bo0YMsbnqHSqlwkrFD8+Ckl+tYE op26ogolIiz87lQliN4FmPzNb65VyIppQACovS/ErKt2bKCa8Cjgjc4Ka zNC3+6JKTYur0iHwyG+Ukhk4/+5Fpm0qZxVNXYTYaepkLGLOWGSe2vhOo XFZTidPPSheX+R39S/ASZ6AI+OP1LkWq+L6J7cvEYMF2z91ll/3EJOaeg w==; X-IronPort-AV: E=McAfee;i="6500,9779,10643"; a="364023248" X-IronPort-AV: E=Sophos;i="5.98,245,1673942400"; d="scan'208";a="364023248" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Mar 2023 00:09:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10643"; a="787471448" X-IronPort-AV: E=Sophos;i="5.98,245,1673942400"; d="scan'208";a="787471448" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga002.fm.intel.com with ESMTP; 09 Mar 2023 00:09:47 -0800 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 Subject: [PATCH 12/12] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Date: Thu, 9 Mar 2023 00:09:10 -0800 Message-Id: <20230309080910.607396-13-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230309080910.607396-1-yi.l.liu@intel.com> References: <20230309080910.607396-1-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/hw_pagetable.c | 10 +++++++-- drivers/iommu/iommufd/iommufd_test.h | 10 +++++++++ drivers/iommu/iommufd/selftest.c | 15 +++++++++++++ tools/testing/selftests/iommu/iommufd.c | 8 +++++++ tools/testing/selftests/iommu/iommufd_utils.h | 21 +++++++++++++++++++ 5 files changed, 62 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index 0871da848447..15dd1743d888 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -339,7 +339,8 @@ int iommufd_hwpt_invalidate(struct iommufd_ucmd *ucmd) * data_len should not exceed the size of iommufd_invalidate_buffer. */ if (cmd->data_type == IOMMU_HWPT_TYPE_DEFAULT || !cmd->data_len || - cmd->data_type >= ARRAY_SIZE(iommufd_hwpt_invalidate_info_size)) + (cmd->data_type != IOMMU_HWPT_TYPE_SELFTTEST && + cmd->data_type >= ARRAY_SIZE(iommufd_hwpt_invalidate_info_size))) return -EOPNOTSUPP; hwpt = iommufd_get_hwpt(ucmd, cmd->hwpt_id); @@ -352,7 +353,12 @@ int iommufd_hwpt_invalidate(struct iommufd_ucmd *ucmd) goto out_put_hwpt; } - klen = iommufd_hwpt_invalidate_info_size[cmd->data_type]; + if (cmd->data_type != IOMMU_HWPT_TYPE_SELFTTEST) + klen = iommufd_hwpt_invalidate_info_size[cmd->data_type]; +#ifdef CONFIG_IOMMUFD_TEST + else + klen = sizeof(struct iommu_hwpt_invalidate_selftest); +#endif if (!klen) { rc = -EINVAL; goto out_put_hwpt; diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 4b60a6df0428..090e9d6abd87 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -135,4 +135,14 @@ 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 a0d57f00f759..fe1caba9e2c5 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -351,9 +351,24 @@ static const struct iommu_ops mock_ops = { }, }; +static void 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; + + if (inv_info->flags & IOMMU_TEST_INVALIDATE_ALL) + mock->iotlb = 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, }; struct iommu_device mock_iommu_device = { diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 10f1592dc9e7..89a44479835d 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -126,6 +126,7 @@ 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 } @@ -326,6 +327,13 @@ 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 211798190e5b..b1592b4f2049 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -167,6 +167,27 @@ 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_type = IOMMU_HWPT_TYPE_SELFTTEST, + .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_set_ioas(int fd, __u32 access_id, unsigned int ioas_id) {