From patchwork Mon Nov 27 06:34:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13469175 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="LtvPq8MB" Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7692F9E; Sun, 26 Nov 2023 22:34:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701066879; x=1732602879; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=PYK6CzX/KC3fA+NEP1moXvit0m+FqGYstm2SuVEzKLg=; b=LtvPq8MBe4rpIufswOYZOkrJN9Ugq7QdLbiJlMNdsKTYcDZmdlJAcptg J+IdD9r2Q+GrYjZVni0Ju5KAxMACC2SpG7Sp67KDV5TGCmdS9sKpBVr6z 2MNPH0uCWsA6TkZfFRexkima83rX6BdRP7X/ah0T+3QoQyVXOcRkvxriU aOzO4YUBAGTPzJhgS2+oRWyzZEISJRM09LkfS87ynJjV4jeyoH5xW8faT LCkwZaOWfdf5QyVOMKnsvwLheV+dP+PmBt1THmQCbWH9IT5D6KvcsTdFF RSIMsKIevsatTmb3BosYjVztVMwMlPk4OaOTbNT9BTkeeriXHx3quCX2+ w==; X-IronPort-AV: E=McAfee;i="6600,9927,10906"; a="391518187" X-IronPort-AV: E=Sophos;i="6.04,230,1695711600"; d="scan'208";a="391518187" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Nov 2023 22:34:39 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10906"; a="838608944" X-IronPort-AV: E=Sophos;i="6.04,230,1695711600"; d="scan'208";a="838608944" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga004.fm.intel.com with ESMTP; 26 Nov 2023 22:34:38 -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 5/8] iommufd/selftest: Add a helper to get test device Date: Sun, 26 Nov 2023 22:34:25 -0800 Message-Id: <20231127063428.127436-6-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231127063428.127436-1-yi.l.liu@intel.com> References: <20231127063428.127436-1-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There is need to get the selftest device (sobj->type == TYPE_IDEV) in multiple places, so have a helper to for it. Signed-off-by: Yi Liu --- drivers/iommu/iommufd/selftest.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 221a206bf38f..9b9fd3f50264 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -720,29 +720,39 @@ 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, - unsigned int device_id, u32 pt_id, - struct iommu_test_cmd *cmd) +static struct selftest_obj * +iommufd_test_get_self_test_device(struct iommufd_ctx *ictx, u32 id) { struct iommufd_object *dev_obj; struct selftest_obj *sobj; - int rc; /* * Prefer to use the OBJ_SELFTEST because the destroy_rwsem will ensure * it doesn't race with detach, which is not allowed. */ - dev_obj = - iommufd_get_object(ucmd->ictx, device_id, IOMMUFD_OBJ_SELFTEST); + dev_obj = iommufd_get_object(ictx, id, IOMMUFD_OBJ_SELFTEST); if (IS_ERR(dev_obj)) - return PTR_ERR(dev_obj); + return (struct selftest_obj *)dev_obj; sobj = container_of(dev_obj, struct selftest_obj, obj); if (sobj->type != TYPE_IDEV) { - rc = -EINVAL; - goto out_dev_obj; + iommufd_put_object(dev_obj); + return ERR_PTR(-EINVAL); } + return sobj; +} + +/* Replace the mock domain with a manually allocated hw_pagetable */ +static int iommufd_test_mock_domain_replace(struct iommufd_ucmd *ucmd, + unsigned int device_id, u32 pt_id, + struct iommu_test_cmd *cmd) +{ + struct selftest_obj *sobj; + int rc; + + sobj = iommufd_test_get_self_test_device(ucmd->ictx, device_id); + if (IS_ERR(sobj)) + return PTR_ERR(sobj); rc = iommufd_device_replace(sobj->idev.idev, &pt_id); if (rc) @@ -752,7 +762,7 @@ static int iommufd_test_mock_domain_replace(struct iommufd_ucmd *ucmd, rc = iommufd_ucmd_respond(ucmd, sizeof(*cmd)); out_dev_obj: - iommufd_put_object(dev_obj); + iommufd_put_object(&sobj->obj); return rc; }