From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) (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 598731A8F89; Sun, 27 Apr 2025 06:43:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745736223; cv=none; b=VQJ4kPJw4rBN37KdzQRfNN8B6sV1U5spnQOzDS22fglAlcJoMGypz+yNgJKqgRP6kniswXUfVJHKM3Tk52FYY53ly9AVbbfX2DCRNWLuyDtwEFDyyEWT1EGZz+/HDKuI5vHf3JFTIdfGWG6qq+GjiJEwEDtrcblotpsEoSvb8uk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745736223; c=relaxed/simple; bh=Avkh+IHRFhmXquqMCTj0xnURVEaMs2AVp7RorDHEx4U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=XOwfJd6ZSHkWbln7Bb+m+vX1NrRfGyeLHDPreBmm3NhB5gAgeYmBbB8w8XeXVeTsPUmJ7imDqBsBn9oalj9tWI9dmFMmL7TXRz9sfN6MFgba0ZvolqjgpeG9ggVhOwAWCOIyjW/0X9gafO+4d0o1zEI4AYzqdNnELSMGKlkJ2bY= 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=MtNBnlro; arc=none smtp.client-ip=198.175.65.16 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="MtNBnlro" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1745736222; x=1777272222; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=Avkh+IHRFhmXquqMCTj0xnURVEaMs2AVp7RorDHEx4U=; b=MtNBnlrod1lCOiqBmmR4435x00jIG7QQVsbroKMOsieuErTCLfdFDC+7 h4XFAsUyzDiVzs24sK62lizR8Z4oVvXWwdjRFAxHgD2g89UzaaQSlC/1+ LiiW9cNphl/CSoWD0r7QYQq2oeQH470ONbE3DfOOj/ggHnU5MSecJPVpD +5iGtexoCiuGObh0K2o5479Y/Wnp9c477IwbhgY7iFU3t+mUO001L9c// GP2lAc+3r7L5IFwF4Yir6oOSJZw3n4poxsLtV+H7PNXupH3nBtkk7Alk7 twFqcXtXzQxTjpm1N6TVyQOR3EjCxs7s938Fqfx6is9RQEvtYlPJhWiPi Q==; X-CSE-ConnectionGUID: keQoUg4vRzCN2IF4nBqGrg== X-CSE-MsgGUID: 09+AMdaWSfKouwlyBh1UxQ== X-IronPort-AV: E=McAfee;i="6700,10204,11415"; a="47430898" X-IronPort-AV: E=Sophos;i="6.15,243,1739865600"; d="scan'208";a="47430898" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Apr 2025 23:43:41 -0700 X-CSE-ConnectionGUID: nlUKeu2LRMaehOEljfFcBQ== X-CSE-MsgGUID: RSaSroJwTzy9u9o2IB/EVg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,243,1739865600"; d="scan'208";a="133732043" Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Apr 2025 23:43:35 -0700 Message-ID: <6dc981fd-f093-48fc-a162-4e4e989c22f2@linux.intel.com> Date: Sun, 27 Apr 2025 14:39:26 +0800 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 04/22] iommu: Add iommu_copy_struct_to_user helper 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: > Similar to the iommu_copy_struct_from_user helper receiving data from the > user space, add an iommu_copy_struct_to_user helper to report output data > back to the user space data pointer. > > Reviewed-by: Jason Gunthorpe > Signed-off-by: Nicolin Chen Reviewed-by: Lu Baolu