From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C79CA1A3145; Sun, 27 Apr 2025 06:36:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745735771; cv=none; b=Src4kFaa/ZCN4ieVN/e2m7Bu97eH3Q9NLqCGzNeKbukEhj7PYmOfcS26Sn5j5AJFuP+Tm/YGeShuRqTn7giIeiHXN3oL92CBQHMcA7orOnnNhFRV05BZL5U1jhs2csJgo3Ium6/l3KvvvEJsEn+eHgz+LL+jVzgb6NkTeS2VkTY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745735771; c=relaxed/simple; bh=nMJQw4mASCaotj7CeCbT8hl1dGmW66KZ98Yv5np3pOw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=P/iDiC01BGwoiEiDdh19xRUK5WAOPn+hnE2tgCjjRwyJ42qOWCGWWscof6M2FpbTYS6y/Oyx4NJzEoe9QaeU+EV/1VBIiDtamzLNxnfzQxpKtTtmaTQbMygACRQRFMkHcp0kimUttQKKDyGVocAlOOeoZkFBF5NOjR2oE/8xC6g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ihKM1lxl; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ihKM1lxl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1745735770; x=1777271770; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=nMJQw4mASCaotj7CeCbT8hl1dGmW66KZ98Yv5np3pOw=; b=ihKM1lxl/bI/e8pa7J5Gb5VCT2Gi8yY31uKEbcXrWqeaGZEFnajhFVUX qHf8dUFS+xku1M+TOeGH2M5pgPHIPtdC8P9Z9WHM8oVeBd0spac3OuImv lf9RYIRrzBKe8I8sg+tAXzf9s1yr8QgdngzFB1UBZ+3nsOy+b5a0e2G1c IG8Z77zV4FcHWHI5ViiGmk5/BrW+jwCcwHh/mcXHGCRpzBQIJacx4uH3E 2+o2iANyGUAWVX0+L5aRWJwUuvIPC+FlFXxDm8NfHjf+VN9fXicu2zEz3 J/xq6OEKnmo2wQ3PF4rE8kVr4WTENlORB1xvKvGlrE+HTgVICcb7aaRQY Q==; X-CSE-ConnectionGUID: 6YkKZODxT+6A9c60z4SLlg== X-CSE-MsgGUID: ZkdsWK1kSDGUvpezFQFlOQ== X-IronPort-AV: E=McAfee;i="6700,10204,11415"; a="69841266" X-IronPort-AV: E=Sophos;i="6.15,243,1739865600"; d="scan'208";a="69841266" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Apr 2025 23:36:09 -0700 X-CSE-ConnectionGUID: mBeNWfFqTZen1E8BpfidTw== X-CSE-MsgGUID: cmIWTG8QT0iiV/8hqXye+Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,243,1739865600"; d="scan'208";a="138048971" Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by fmviesa005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Apr 2025 23:36:03 -0700 Message-ID: Date: Sun, 27 Apr 2025 14:31:54 +0800 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 02/22] iommu: Pass in a driver-level user data structure to viommu_alloc op To: Nicolin Chen , jgg@nvidia.com, kevin.tian@intel.com, corbet@lwn.net, will@kernel.org Cc: bagasdotme@gmail.com, robin.murphy@arm.com, joro@8bytes.org, thierry.reding@gmail.com, vdumpa@nvidia.com, jonathanh@nvidia.com, shuah@kernel.org, jsnitsel@redhat.com, nathan@kernel.org, peterz@infradead.org, yi.l.liu@intel.com, mshavit@google.com, praan@google.com, zhangzekun11@huawei.com, iommu@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org, linux-kselftest@vger.kernel.org, patches@lists.linux.dev, mochs@nvidia.com, alok.a.tiwari@oracle.com, vasant.hegde@amd.com References: Content-Language: en-US From: Baolu Lu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/26/25 13:57, Nicolin Chen wrote: > The new type of vIOMMU for tegra241-cmdqv needs to pass in a driver-level > data structure from user space via iommufd, so add a user_data to the op. > > Reviewed-by: Jason Gunthorpe > Signed-off-by: Nicolin Chen It would be better to add some words explaining what kind of user data can be passed when allocating a vIOMMU object and the reason why this might be necessary. Reviewed-by: Lu Baolu Thanks, baolu