From patchwork Fri Nov 17 13:07:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13458956 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XArybbIc" Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B78FD5A; Fri, 17 Nov 2023 05:07:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700226447; x=1731762447; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vNaYz7iy30KVHMhHAV2qo0PJlGdOsQbJ8Uvt0Ebwm2k=; b=XArybbIcJ4OJm+pJgBlgdb7tJmsE0a44JgH+FOkdLv6qe9H03LLKy8tL Si3e4qBEUX+eBQeV3QSqIpVygPbg6vS4yRlJZnMWQ29igvJy/kS0NUNzs CnYnoQB35nxqKECvlQmW3wAwNGkd90X9oVqUX8UnGxAHdSVFx3/yVcTri N+8Sp9Wj/kIWStM8jNym2ZVzCDQR0gJfxgsS8Q0MmeBC1fON3SbvfsDu9 TxYtPbUEVY57sibl7G5LSjAsdgNUhtztCzJvyWZLc4bXo+8A4zCfSstNj zak6pLZd1I5KSOOiKVBHveYoT3txbZhVwkHoVdG7LNpJW5sp6o5DgSiAQ A==; X-IronPort-AV: E=McAfee;i="6600,9927,10896"; a="388446416" X-IronPort-AV: E=Sophos;i="6.04,206,1695711600"; d="scan'208";a="388446416" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2023 05:07:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10896"; a="836072061" X-IronPort-AV: E=Sophos;i="6.04,206,1695711600"; d="scan'208";a="836072061" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga004.fm.intel.com with ESMTP; 17 Nov 2023 05:07:25 -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, zhenzhong.duan@intel.com, joao.m.martins@oracle.com, xin.zeng@intel.com, yan.y.zhao@intel.com Subject: [PATCH v6 4/6] iommufd/selftest: Add mock_domain_cache_invalidate_user support Date: Fri, 17 Nov 2023 05:07:15 -0800 Message-Id: <20231117130717.19875-5-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231117130717.19875-1-yi.l.liu@intel.com> References: <20231117130717.19875-1-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Nicolin Chen Add mock_domain_cache_invalidate_user() data structure to support user space selftest program to cover user cache invalidation pathway. Signed-off-by: Nicolin Chen Signed-off-by: Yi Liu --- drivers/iommu/iommufd/iommufd_test.h | 17 +++++++++++ drivers/iommu/iommufd/selftest.c | 43 ++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 7910fbe1962d..0000f58dcda3 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -148,4 +148,21 @@ struct iommu_hwpt_selftest { __u32 iotlb; }; +/** + * struct iommu_hwpt_invalidate_selftest + * + * @flags: invalidate flags + * @iotlb_id: invalidate iotlb entry index + * + * If IOMMU_TEST_INVALIDATE_ALL is set in @flags, @iotlb_id will be ignored + */ +struct iommu_hwpt_invalidate_selftest { +#define IOMMU_TEST_INVALIDATE_ALL (1ULL << 0) + __u32 flags; + __u32 iotlb_id; +}; + +#define IOMMU_TEST_INVALIDATE_ERR_FETCH 0xdeadbeee +#define IOMMU_TEST_INVALIDATE_ERR_REQ 0xdeadbeef + #endif diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 5d93434003d8..2a9b970ca84e 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -473,9 +473,52 @@ static void mock_domain_free_nested(struct iommu_domain *domain) kfree(mock_nested); } +static int +mock_domain_cache_invalidate_user(struct iommu_domain *domain, + struct iommu_user_data_array *array, + u32 *error_code) +{ + struct mock_iommu_domain_nested *mock_nested = + container_of(domain, struct mock_iommu_domain_nested, domain); + struct iommu_hwpt_invalidate_selftest inv; + int rc = 0; + int i, j; + + if (domain->type != IOMMU_DOMAIN_NESTED) + return -EINVAL; + + for (i = 0; i < array->entry_num; i++) { + rc = iommu_copy_struct_from_user_array(&inv, array, + IOMMU_HWPT_DATA_SELFTEST, + i, iotlb_id); + if (rc) { + *error_code = IOMMU_TEST_INVALIDATE_ERR_FETCH; + goto err; + } + /* Invalidate all mock iotlb entries and ignore iotlb_id */ + if (inv.flags & IOMMU_TEST_INVALIDATE_ALL) { + for (j = 0; j < MOCK_NESTED_DOMAIN_IOTLB_NUM; j++) + mock_nested->iotlb[j] = 0; + continue; + } + /* Treat out-of-boundry iotlb_id as a request error */ + if (inv.iotlb_id > MOCK_NESTED_DOMAIN_IOTLB_ID_MAX) { + *error_code = IOMMU_TEST_INVALIDATE_ERR_REQ; + rc = -EINVAL; + goto err; + } + mock_nested->iotlb[inv.iotlb_id] = 0; + } + +err: + array->entry_num = i; + return rc; +} + static struct iommu_domain_ops domain_nested_ops = { .free = mock_domain_free_nested, .attach_dev = mock_domain_nop_attach, + .cache_invalidate_user = mock_domain_cache_invalidate_user, }; static inline struct iommufd_hw_pagetable *