From patchwork Thu Feb 9 04:31:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13133967 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 B2C85C05027 for ; Thu, 9 Feb 2023 04:35:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbjBIEfm (ORCPT ); Wed, 8 Feb 2023 23:35:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230117AbjBIEeJ (ORCPT ); Wed, 8 Feb 2023 23:34:09 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A73194F853; Wed, 8 Feb 2023 20:32:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1675917176; x=1707453176; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BCH59LZj1tXUKHsvjYU9esem/j0fJFX1kfEeZP2CZtg=; b=TlIghNNgnZ6QQwp6RSsFR7J5RQDeOtgopeUBkveeiPJhbGdXNmWYMApY 9oOqypwxLwCGoH6WYMkHQqSiI01NtsVDzfh4+3/WRmKzOBVP7q4EB4vTA CPZjWoWzNVN3/oJfsj1qt1Acvn15eHO8KxihpodGdyjDrm+ymvhcdyRWf FHcl144UieEpZ8cGDWAzWt+JoPP1xWMnmvZ1HX+kQS50IRCQ1PS1aKT7W fCqW8a88W199Yr8nTH46tUPjKwnxUQ88+Mg3rschMXw1hOQNS67vOfaDr aqJtildzGEfRlqT4Jr7fQ80LPhhA1Uj0isUnMbZz5A7UUZFDSC+pxDhbn A==; X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="331298854" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="331298854" 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 20:32:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="669447600" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="669447600" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga007.fm.intel.com with ESMTP; 08 Feb 2023 20:32:23 -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 14/17] iommufd/selftest: Add IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE test op Date: Wed, 8 Feb 2023 20:31:50 -0800 Message-Id: <20230209043153.14964-15-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 allows to detach/attach the mock_dev to a specified domain/hwpt. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- drivers/iommu/iommufd/device.c | 1 - drivers/iommu/iommufd/iommufd_test.h | 5 +++ drivers/iommu/iommufd/selftest.c | 54 ++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index 826441c6005d..bf803975062c 100644 --- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -964,7 +964,6 @@ EXPORT_SYMBOL_NS_GPL(iommufd_access_rw, IOMMUFD); * Creating a real iommufd_device is too hard, bypass creating a iommufd_device * and go directly to attaching a domain. */ - int iommufd_device_selftest_attach(struct iommufd_ctx *ictx, struct iommufd_hw_pagetable *hwpt) { diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 1605ff2b1a90..a73ab51afe79 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -10,6 +10,7 @@ enum { IOMMU_TEST_OP_ADD_RESERVED = 1, IOMMU_TEST_OP_MOCK_DOMAIN, + IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE, IOMMU_TEST_OP_MD_CHECK_MAP, IOMMU_TEST_OP_MD_CHECK_REFS, IOMMU_TEST_OP_CREATE_ACCESS, @@ -53,6 +54,10 @@ struct iommu_test_cmd { __u32 out_device_id; __u32 out_hwpt_id; } mock_domain; + struct { + __u32 device_id; + __u32 hwpt_id; + } mock_domain_replace; struct { __aligned_u64 iova; __aligned_u64 length; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 5f841d1d9e96..3623a42648d5 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -98,6 +98,7 @@ struct selftest_obj { union { struct { struct iommufd_hw_pagetable *hwpt; + struct iommufd_ioas *ioas; struct iommufd_ctx *ictx; struct device mock_dev; } idev; @@ -308,6 +309,7 @@ static int iommufd_test_mock_domain(struct iommufd_ucmd *ucmd, } sobj->idev.ictx = ucmd->ictx; sobj->type = TYPE_IDEV; + sobj->idev.ioas = ioas; sobj->idev.mock_dev.bus = &mock_bus; sobj->idev.mock_dev.iommu = &iommu; @@ -341,6 +343,56 @@ static int iommufd_test_mock_domain(struct iommufd_ucmd *ucmd, return rc; } +/* Replace the mock domain with a manually allocated hw_pagetable */ +static int iommufd_test_mock_domain_replace(struct iommufd_ucmd *ucmd, + struct iommu_test_cmd *cmd) +{ + struct iommufd_object *dev_obj, *hwpt_obj; + struct iommufd_hw_pagetable *hwpt; + struct selftest_obj *sobj; + int rc; + + hwpt_obj = iommufd_get_object(ucmd->ictx, + cmd->mock_domain_replace.hwpt_id, + IOMMUFD_OBJ_HW_PAGETABLE); + if (IS_ERR(hwpt_obj)) + return PTR_ERR(hwpt_obj); + + hwpt = container_of(hwpt_obj, struct iommufd_hw_pagetable, obj); + + dev_obj = iommufd_get_object(ucmd->ictx, + cmd->mock_domain_replace.device_id, + IOMMUFD_OBJ_SELFTEST); + if (IS_ERR(dev_obj)) { + rc = PTR_ERR(dev_obj); + goto out_hwpt_obj; + } + + sobj = container_of(dev_obj, struct selftest_obj, obj); + if (sobj->type != TYPE_IDEV) { + rc = -EINVAL; + goto out_dev_obj; + } + + iommufd_device_selftest_detach(sobj->idev.ictx, sobj->idev.hwpt); + + rc = iommufd_device_selftest_attach(ucmd->ictx, hwpt); + if (rc) + goto out_reattach; + sobj->idev.hwpt = hwpt; + + rc = 0; + goto out_dev_obj; + +out_reattach: + iommufd_device_selftest_attach(ucmd->ictx, sobj->idev.hwpt); +out_dev_obj: + iommufd_put_object(dev_obj); +out_hwpt_obj: + iommufd_put_object(hwpt_obj); + return rc; +} + /* Add an additional reserved IOVA to the IOAS */ static int iommufd_test_add_reserved(struct iommufd_ucmd *ucmd, unsigned int mockpt_id, @@ -847,6 +899,8 @@ int iommufd_test(struct iommufd_ucmd *ucmd) cmd->add_reserved.length); case IOMMU_TEST_OP_MOCK_DOMAIN: return iommufd_test_mock_domain(ucmd, cmd); + case IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE: + return iommufd_test_mock_domain_replace(ucmd, cmd); case IOMMU_TEST_OP_MD_CHECK_MAP: return iommufd_test_md_check_pa( ucmd, cmd->id, cmd->check_map.iova,