From patchwork Thu May 11 14:38:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13238060 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 7AD4DC77B7C for ; Thu, 11 May 2023 14:43:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238445AbjEKOnE (ORCPT ); Thu, 11 May 2023 10:43:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237900AbjEKOme (ORCPT ); Thu, 11 May 2023 10:42:34 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46F3D10E52; 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=dFwMxZt/0jrWmtMcQrcBRo0nxvp+usQpsnuOT7m4UGU=; b=Mz1pdwkLaywwyl6CUDeg+DKal+5Tjv/D13JxOyIuv2FAmxxcmgOe205Z 2e11+v+TaZh5yTLquROqIRJ68Bm22osDKLEb+9b9SlZCVDWJzccD5v6IM MCPxt5KgWoyWX6bnXFqGVyolGfmXf++6eoCUrxE1JCl3w17FXmrIARAHe uOX+nw40/mXmeQQqf9OZOKZggMx735YfGQts+AO/xF5AR2x5qe+6V5igs i0Xr5fB/jfNojKOizJxr1rh1ok3upZ3TMgcb5tTgbImdlZorIAQDIxKtM pUs4HlABBVLHb36zq54TRK48fyHJa95xRYxF4bmsftynqom9LwjBc7c6a A==; X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="339812970" X-IronPort-AV: E=Sophos;i="5.99,266,1677571200"; d="scan'208";a="339812970" 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 07:38:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10707"; a="730382638" X-IronPort-AV: E=Sophos;i="5.99,266,1677571200"; d="scan'208";a="730382638" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga008.jf.intel.com with ESMTP; 11 May 2023 07:38:52 -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 10/11] iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op Date: Thu, 11 May 2023 07:38:43 -0700 Message-Id: <20230511143844.22693-11-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 This allows 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 | 4 ++++ drivers/iommu/iommufd/selftest.c | 22 +++++++++++++++++++ tools/testing/selftests/iommu/iommufd.c | 4 ++++ tools/testing/selftests/iommu/iommufd_utils.h | 14 ++++++++++++ 4 files changed, 44 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index e77d57dd8e25..ec904931df69 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 { @@ -95,6 +96,9 @@ struct iommu_test_cmd { struct { __u32 ioas_id; } access_replace_ioas; + struct { + __u32 iotlb; + } check_iotlb; }; __u32 last; }; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 616525c5d308..57530e7d9524 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -678,6 +678,25 @@ 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, u32 iotlb) +{ + struct iommufd_hw_pagetable *hwpt; + struct mock_iommu_domain *mock; + int rc = 0; + + hwpt = get_md_pagetable(ucmd, mockpt_id, &mock); + if (IS_ERR(hwpt)) + return PTR_ERR(hwpt); + + mock = container_of(hwpt->domain, struct mock_iommu_domain, domain); + + if (iotlb != mock->iotlb) + rc = -EINVAL; + iommufd_put_object(&hwpt->obj); + return rc; +} + struct selftest_access { struct iommufd_access *access; struct file *file; @@ -1091,6 +1110,9 @@ 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.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 568f80f596ad..afbe23cecb54 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -310,6 +310,10 @@ TEST_F(iommufd_ioas, nested_hwpt_alloc) &nested_hwpt_id[0]); test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, &nested_hwpt_id[1]); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[0], + IOMMU_TEST_IOTLB_DEFAULT); + test_cmd_hwpt_check_iotlb(nested_hwpt_id[1], + IOMMU_TEST_IOTLB_DEFAULT); /* Negative test: a nested hwpt on top of a nested hwpt */ test_err_cmd_hwpt_alloc_nested(EINVAL, self->device_id, diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index e2c26168ec89..7d9efe3f7e0d 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -122,6 +122,20 @@ static int _test_cmd_hwpt_alloc(int fd, __u32 device_id, __u32 pt_id, EXPECT_ERRNO(_errno, _test_cmd_hwpt_alloc(self->fd, device_id, \ pt_id, hwpt_id)) +#define test_cmd_hwpt_check_iotlb(hwpt_id, expected) \ + ({ \ + struct iommu_test_cmd test_cmd = { \ + .size = sizeof(test_cmd), \ + .op = IOMMU_TEST_OP_MD_CHECK_IOTLB, \ + .id = hwpt_id, \ + .check_iotlb = { .iotlb = expected }, \ + }; \ + ASSERT_EQ(0, \ + ioctl(self->fd, \ + _IOMMU_TEST_CMD(IOMMU_TEST_OP_MD_CHECK_IOTLB), \ + &test_cmd)); \ + }) + static int _test_cmd_hwpt_alloc_nested(int fd, __u32 device_id, __u32 parent_id, __u32 *hwpt_id) {