From patchwork Thu Feb 9 04:31:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 652213 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 2E443C05027 for ; Thu, 9 Feb 2023 04:35:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230468AbjBIEfH (ORCPT ); Wed, 8 Feb 2023 23:35:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48650 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230375AbjBIEez (ORCPT ); Wed, 8 Feb 2023 23:34:55 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 337EF518F4; Wed, 8 Feb 2023 20:33:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1675917185; x=1707453185; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=dlcR+UhuTmADspR4+oiL3WW4I/8TuCAOY+usI2kEQJs=; b=dl4CrnpInnfB/CgOV3sCGlp5pQoFvOOqhpr8Kf8euXYo/gDGa5CoSyRk RL/m1W59lTZ0PL8kInEFL42M1koA+3HvVyndT16uiuB6weaGJFYvncZdl F5U7KrOMi+fksieh/4+EeCYU7F7egoK7AGQD3wsx7A0LLTua7S0Rux/mZ NihIZavUf1KTfZPd6bmDJryOZWo/6RiJfrXK9i8Re1uvCNeyQ8Sir6GTV 5WiM1LE3xbRa/RJlhvjQ9gLs86B5VFAkLxbpw637CEhU/Sek+YNUJXPk4 8JEhO4TRNbqcUzpJuOEtM14B4qxbJczJi7iEhLWEgDwXczIsSk7IiFHiw w==; X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="331298915" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="331298915" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2023 20:32:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="669447643" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="669447643" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga007.fm.intel.com with ESMTP; 08 Feb 2023 20:32:29 -0800 From: Yi Liu To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.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, baolu.lu@linux.intel.com Subject: [PATCH 17/17] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Date: Wed, 8 Feb 2023 20:31:53 -0800 Message-Id: <20230209043153.14964-18-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230209043153.14964-1-yi.l.liu@intel.com> References: <20230209043153.14964-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Nicolin Chen This only adds limited sanity. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- drivers/iommu/iommufd/hw_pagetable.c | 7 ++++++- 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, 60 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index 1f1940969b2b..86864a3e170e 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -283,7 +283,12 @@ 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_PGTBL_DATA_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 5998c63a89f2..4913884a8b24 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -134,4 +134,14 @@ 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 (1 << 0) + __u64 flags; +}; + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 21134000bc78..06b5e8829488 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -283,6 +283,20 @@ static phys_addr_t mock_domain_iova_to_phys(struct iommu_domain *domain, return (xa_to_value(ent) & MOCK_PFN_MASK) * MOCK_IO_PAGE_SIZE; } +static void mock_domain_iotlb_sync_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 const struct iommu_ops mock_ops = { .owner = THIS_MODULE, .pgsize_bitmap = MOCK_IO_PAGE_SIZE, @@ -301,6 +315,7 @@ static const struct iommu_ops mock_ops = { static struct iommu_domain_ops domain_nested_ops = { .free = mock_domain_free, + .iotlb_sync_user = mock_domain_iotlb_sync_user, }; static inline struct iommufd_hw_pagetable * diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index ddd7c898fc50..3fc7a1cd8fef 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_device_info, IOMMU_DEVICE_GET_INFO); TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC); + TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE); #undef TEST_LENGTH } @@ -312,6 +313,13 @@ TEST_F(iommufd_ioas, ioas_nested_hwpt) EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, parent_hwpt_id)); + /* hwpt_invalidate only supports a user-managed hwpt (nested) */ + test_err_ioctl_hwpt_invalidate(EINVAL, parent_hwpt_id); + test_ioctl_hwpt_invalidate(nested_hwpt_id[0]); + test_ioctl_hwpt_check_iotlb(nested_hwpt_id[0], 0); + test_ioctl_hwpt_invalidate(nested_hwpt_id[1]); + test_ioctl_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->ioas_id, self->dev_id, nested_hwpt_id[0]); diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index ea61b81fbc52..73ba0bacbb9a 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -244,6 +244,27 @@ static int _test_ioctl_hwpt_alloc(int fd, __u32 pt_id, __u32 dev_id, ASSERT_EQ(0, *(out_hwpt_id)); \ }) +static int _test_ioctl_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_PGTBL_DATA_SELFTTEST, + .data_len = sizeof(data), + .data_uptr = (uint64_t)&data, + }; + + return ioctl(fd, IOMMU_HWPT_INVALIDATE, &cmd); +} + +#define test_ioctl_hwpt_invalidate(hwpt_id) \ + ASSERT_EQ(0, _test_ioctl_hwpt_invalidate(self->fd, hwpt_id)) +#define test_err_ioctl_hwpt_invalidate(_errno, hwpt_id) \ + EXPECT_ERRNO(_errno, _test_ioctl_hwpt_invalidate(self->fd, hwpt_id)) + static int _test_ioctl_ioas_map(int fd, unsigned int ioas_id, void *buffer, size_t length, __u64 *iova, unsigned int flags) {