From patchwork Mon Jul 24 11:04:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13324409 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 2FD8BC0015E for ; Mon, 24 Jul 2023 11:05:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233410AbjGXLFU (ORCPT ); Mon, 24 Jul 2023 07:05:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231179AbjGXLFK (ORCPT ); Mon, 24 Jul 2023 07:05:10 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E96410DE; Mon, 24 Jul 2023 04:04:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690196685; x=1721732685; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=wu92GRhppcU7MkbkHzcmjc/NGunkuHuJrkG4JF9bmNM=; b=HBd3gh2MN1t0DXy55YYzU2w9I1Os1VxvP2JcHFX6qPLfz/2id9h/4lbQ zf5r44/Pp69VqtAVq9i7mW09th+o7ghpuACqs0E6r1LuqOa3qQUqUmhLi 2WJlKwMyZdrRMuLaIzLYiNLTR7rSQmIK04WxsvqPmXh6yPd1i37lUVvwE c+8+8SInIbYSdN68edcvhTtPvg8KMjgcr+2kLghffArAqBRnO4RBScdvk dEtNl0v352YtsWPKm7CA1abnb2A4SsyBAC+XbTt46Wmp5L1I7S3PBoOhp YHCOdI/2rOtAondsq26tBCC7VcPE3MMB7d99PGNI6R2QEse2S59vH2zyQ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10780"; a="347013339" X-IronPort-AV: E=Sophos;i="6.01,228,1684825200"; d="scan'208";a="347013339" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jul 2023 04:04:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10780"; a="815775877" X-IronPort-AV: E=Sophos;i="6.01,228,1684825200"; d="scan'208";a="815775877" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by FMSMGA003.fm.intel.com with ESMTP; 24 Jul 2023 04:04:22 -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 v3 13/17] iommufd/selftest: Add coverage for IOMMU_RESV_IOVA_RANGES Date: Mon, 24 Jul 2023 04:04:02 -0700 Message-Id: <20230724110406.107212-14-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230724110406.107212-1-yi.l.liu@intel.com> References: <20230724110406.107212-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This adds selftest for ioctl IOMMU_RESV_IOVA_RANGES. Signed-off-by: Yi Liu --- tools/testing/selftests/iommu/iommufd.c | 98 +++++++++++++++++++++++++ 1 file changed, 98 insertions(+) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 6b075a68b928..bfe0f76f7fb0 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -1780,4 +1780,102 @@ TEST_F(vfio_compat_mock_domain, huge_map) } } +FIXTURE(iommufd_device_resv_iova) +{ + int fd; + uint32_t ioas_id; + uint32_t stdev_id; + uint32_t device_id; +}; + +FIXTURE_SETUP(iommufd_device_resv_iova) +{ + self->fd = open("/dev/iommu", O_RDWR); + ASSERT_NE(-1, self->fd); + test_ioctl_ioas_alloc(&self->ioas_id); + + test_cmd_mock_domain(self->ioas_id, &self->stdev_id, + NULL, &self->device_id); +} + +FIXTURE_TEARDOWN(iommufd_device_resv_iova) +{ + teardown_iommufd(self->fd, _metadata); +} + +TEST_F(iommufd_device_resv_iova, dev_resv_iova_ranges) +{ + struct iommu_test_cmd test_cmd = { + .size = sizeof(test_cmd), + .op = IOMMU_TEST_OP_DEV_ADD_RESERVED, + .id = self->stdev_id, + .add_dev_reserved = { .start = PAGE_SIZE, .length = PAGE_SIZE }, + }; + struct iommu_test_cmd test_cmd_del = { + .size = sizeof(test_cmd_del), + .op = IOMMU_TEST_OP_DEV_DEL_RESERVED, + .id = self->stdev_id, + }; + struct iommu_resv_iova_range *ranges = buffer; + struct iommu_resv_iova_ranges ranges_cmd = { + .size = sizeof(ranges_cmd), + .dev_id = self->device_id, + .num_iovas = BUFFER_SIZE / sizeof(*ranges), + .resv_iovas = (uintptr_t)ranges, + }; + + /* Range can be read */ + ASSERT_EQ(0, ioctl(self->fd, IOMMU_RESV_IOVA_RANGES, &ranges_cmd)); + EXPECT_EQ(0, ranges_cmd.num_iovas); + + /* 1 range */ + ASSERT_EQ(0, + ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_DEV_ADD_RESERVED), + &test_cmd)); + ranges_cmd.num_iovas = BUFFER_SIZE / sizeof(*ranges); + ASSERT_EQ(0, ioctl(self->fd, IOMMU_RESV_IOVA_RANGES, &ranges_cmd)); + EXPECT_EQ(1, ranges_cmd.num_iovas); + EXPECT_EQ(PAGE_SIZE, ranges[0].start); + EXPECT_EQ(PAGE_SIZE * 2 - 1, ranges[0].last); + + /* Buffer too small */ + memset(ranges, 0, BUFFER_SIZE); + ranges_cmd.num_iovas = 0; + EXPECT_ERRNO(EMSGSIZE, + ioctl(self->fd, IOMMU_RESV_IOVA_RANGES, &ranges_cmd)); + EXPECT_EQ(1, ranges_cmd.num_iovas); + EXPECT_EQ(0, ranges[0].start); + EXPECT_EQ(0, ranges[0].last); + + /* 2 ranges */ + test_cmd.add_dev_reserved.start = PAGE_SIZE * 4; + test_cmd.add_dev_reserved.length = PAGE_SIZE; + + ASSERT_EQ(0, + ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_DEV_ADD_RESERVED), + &test_cmd)); + ranges_cmd.num_iovas = BUFFER_SIZE / sizeof(*ranges); + ASSERT_EQ(0, ioctl(self->fd, IOMMU_RESV_IOVA_RANGES, &ranges_cmd)); + EXPECT_EQ(2, ranges_cmd.num_iovas); + EXPECT_EQ(PAGE_SIZE, ranges[0].start); + EXPECT_EQ(PAGE_SIZE * 2 - 1, ranges[0].last); + EXPECT_EQ(PAGE_SIZE * 4, ranges[1].start); + EXPECT_EQ(PAGE_SIZE * 5 - 1, ranges[1].last); + + /* Buffer too small */ + memset(ranges, 0, BUFFER_SIZE); + ranges_cmd.num_iovas = 1; + EXPECT_ERRNO(EMSGSIZE, ioctl(self->fd, IOMMU_RESV_IOVA_RANGES, + &ranges_cmd)); + EXPECT_EQ(2, ranges_cmd.num_iovas); + EXPECT_EQ(PAGE_SIZE, ranges[0].start); + EXPECT_EQ(PAGE_SIZE * 2 - 1, ranges[0].last); + EXPECT_EQ(0, ranges[1].start); + EXPECT_EQ(0, ranges[1].last); + + ASSERT_EQ(0, + ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_DEV_DEL_RESERVED), + &test_cmd_del)); +} + TEST_HARNESS_MAIN