From patchwork Fri Oct 20 09:24:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13430371 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 8A376CDB47E for ; Fri, 20 Oct 2023 09:25:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376682AbjJTJZB (ORCPT ); Fri, 20 Oct 2023 05:25:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376694AbjJTJYp (ORCPT ); Fri, 20 Oct 2023 05:24:45 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D1C8D5A; Fri, 20 Oct 2023 02:24:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697793874; x=1729329874; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Mesj9VsQ2q8HSWMcHXIgOJYVRv65WYH80rYMTqkoSts=; b=lpKKZ50kwxMbxmWEBX38AdiYa6a5F1NGAXKjeYkYpxjHANH6DevFq0VJ gI1i/sHOAozLt/gf6yxzHv1jWyrpzCWPe8orZ6RfAOddQgdK8DB0EgSDJ jGFJT1siXKJlH8zT/6PpyK3KmAAEHDidl3cLvK435BHKgt7T+35tlKLYE OhfZWpvWRa8IrLp+74VRU4IYmNC+MBdhQwwsgkwSVf4rvNH4P3EEUzjb0 /7rnExTQJZKXYU0mQRWj3+1F+pnMEsJhUfd27YRRv4cXQc0kcDwOpqcye y+Nalb12Y3DJtUQoFI2+UaHWLzSgMQkKtxRzb5SDYm0BpDXIMiBrjdCPE Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10868"; a="472685531" X-IronPort-AV: E=Sophos;i="6.03,238,1694761200"; d="scan'208";a="472685531" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2023 02:24:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10868"; a="750859685" X-IronPort-AV: E=Sophos;i="6.03,238,1694761200"; d="scan'208";a="750859685" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga007.jf.intel.com with ESMTP; 20 Oct 2023 02:24:31 -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, xin.zeng@intel.com Subject: [PATCH v5 5/6] iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op Date: Fri, 20 Oct 2023 02:24:25 -0700 Message-Id: <20231020092426.13907-6-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231020092426.13907-1-yi.l.liu@intel.com> References: <20231020092426.13907-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Nicolin Chen Allow to test whether IOTLB has been invalidated or not. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- drivers/iommu/iommufd/iommufd_test.h | 5 ++++ drivers/iommu/iommufd/selftest.c | 26 +++++++++++++++++++ tools/testing/selftests/iommu/iommufd.c | 4 +++ tools/testing/selftests/iommu/iommufd_utils.h | 24 +++++++++++++++++ 4 files changed, 59 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index a96838516db9..9cf82d242aa6 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -19,6 +19,7 @@ enum { IOMMU_TEST_OP_SET_TEMP_MEMORY_LIMIT, IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE, IOMMU_TEST_OP_ACCESS_REPLACE_IOAS, + IOMMU_TEST_OP_MD_CHECK_IOTLB, }; enum { @@ -100,6 +101,10 @@ struct iommu_test_cmd { struct { __u32 ioas_id; } access_replace_ioas; + struct { + __u32 id; + __u32 iotlb; + } check_iotlb; }; __u32 last; }; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index abd942cf3a79..112a934cbaca 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -759,6 +759,28 @@ static int iommufd_test_md_check_refs(struct iommufd_ucmd *ucmd, return 0; } +static int iommufd_test_md_check_iotlb(struct iommufd_ucmd *ucmd, + u32 mockpt_id, unsigned int iotlb_id, + u32 iotlb) +{ + struct mock_iommu_domain_nested *mock_nested; + struct iommufd_hw_pagetable *hwpt; + int rc = 0; + + hwpt = get_md_pagetable_nested(ucmd, mockpt_id, &mock_nested); + if (IS_ERR(hwpt)) + return PTR_ERR(hwpt); + + mock_nested = container_of(hwpt->domain, + struct mock_iommu_domain_nested, domain); + + if (iotlb_id > MOCK_NESTED_DOMAIN_IOTLB_ID_MAX || + mock_nested->iotlb[iotlb_id] != iotlb) + rc = -EINVAL; + iommufd_put_object(&hwpt->obj); + return rc; +} + struct selftest_access { struct iommufd_access *access; struct file *file; @@ -1172,6 +1194,10 @@ int iommufd_test(struct iommufd_ucmd *ucmd) return iommufd_test_md_check_refs( ucmd, u64_to_user_ptr(cmd->check_refs.uptr), cmd->check_refs.length, cmd->check_refs.refs); + case IOMMU_TEST_OP_MD_CHECK_IOTLB: + return iommufd_test_md_check_iotlb(ucmd, cmd->id, + cmd->check_iotlb.id, + cmd->check_iotlb.iotlb); case IOMMU_TEST_OP_CREATE_ACCESS: return iommufd_test_create_access(ucmd, cmd->id, cmd->create_access.flags); diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 7ab9ca06460d..e0c66e70d978 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -332,6 +332,10 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested) 0, &nested_hwpt_id[1], IOMMU_HWPT_DATA_SELFTEST, &data, sizeof(data)); + test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[0], + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb_all(nested_hwpt_id[1], + IOMMU_TEST_IOTLB_DEFAULT); /* Negative test: a nested hwpt on top of a nested hwpt */ test_err_hwpt_alloc_nested(EINVAL, diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 1a5fa44b1627..ef7a346dba3a 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -145,6 +145,30 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, _test_cmd_hwpt_alloc(self->fd, device_id, pt_id, flags, \ hwpt_id, data_type, data, data_len)) +#define test_cmd_hwpt_check_iotlb(hwpt_id, iotlb_id, expected) \ + ({ \ + struct iommu_test_cmd test_cmd = { \ + .size = sizeof(test_cmd), \ + .op = IOMMU_TEST_OP_MD_CHECK_IOTLB, \ + .id = hwpt_id, \ + .check_iotlb = { \ + .id = iotlb_id, \ + .iotlb = expected, \ + }, \ + }; \ + ASSERT_EQ(0, \ + ioctl(self->fd, \ + _IOMMU_TEST_CMD(IOMMU_TEST_OP_MD_CHECK_IOTLB), \ + &test_cmd)); \ + }) + +#define test_cmd_hwpt_check_iotlb_all(hwpt_id, expected) \ + ({ \ + int i; \ + for (i = 0; i < MOCK_NESTED_DOMAIN_IOTLB_NUM; i++) \ + test_cmd_hwpt_check_iotlb(hwpt_id, i, expected); \ + }) + static int _test_cmd_access_replace_ioas(int fd, __u32 access_id, unsigned int ioas_id) {