From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 5C3895224 for ; Fri, 8 Dec 2023 05:15:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Nl83Afc3" Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id D0CE640474 for ; Fri, 8 Dec 2023 05:15:00 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org D0CE640474 Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Nl83Afc3 X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -4.299 X-Spam-Level: Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id C3dCzzN5eLa5 for ; Fri, 8 Dec 2023 05:14:59 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by smtp2.osuosl.org (Postfix) with ESMTPS id 74269400F1 for ; Fri, 8 Dec 2023 05:14:59 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 74269400F1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1702012499; x=1733548499; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=eMqZIBfmXsW4JIGVz2VpEyeyCc8OAVvggzWL9Lorv+E=; b=Nl83Afc3OoTsFZ+rape1lqd89Qu5ftZZbr8tlao+CH8roqqi/McrON69 gA7ioFMn/QbnMCyDzQ+OS2KD6fVMWcv5CK4clvHThDBTD48L8RmUbiAXb LuQHTmLldSrUT4RZsnxyxOhuqPSecBcG6b61IqWzqfKT/KBj3YZKBzsXP iRx1XZQQkP17jm+zVANVG+8x64tf+qJH7hACA2vsqhxaW7y/EpTifE3ZC 9v3YUCs2pLcyTJspAwmJ8AS+wLBA1G8BOtQnMgKy1Sxx+CnxrToqoM+JA cL79SzxQMs4WDuZOkSFSyqt/x+ecvoCNOaM8+CcU2/KCMzg0eGCtECXd1 A==; X-IronPort-AV: E=McAfee;i="6600,9927,10917"; a="480554319" X-IronPort-AV: E=Sophos;i="6.04,259,1695711600"; d="scan'208";a="480554319" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Dec 2023 21:14:57 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10917"; a="775684230" X-IronPort-AV: E=Sophos;i="6.04,259,1695711600"; d="scan'208";a="775684230" Received: from allen-box.sh.intel.com (HELO [10.239.159.127]) ([10.239.159.127]) by fmsmga007.fm.intel.com with ESMTP; 07 Dec 2023 21:14:54 -0800 Message-ID: <8d29c6fb-0928-4c11-a9af-02647597cb4e@linux.intel.com> Date: Fri, 8 Dec 2023 13:10:17 +0800 Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: baolu.lu@linux.intel.com, Jason Gunthorpe , Kevin Tian , Joerg Roedel , Will Deacon , Robin Murphy , Jean-Philippe Brucker , Nicolin Chen , Yi Liu , Jacob Pan , iommu@lists.linux.dev, linux-kselftest@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/6] IOMMUFD: Deliver IO page faults to user space Content-Language: en-US To: Joel Granados References: <20231026024930.382898-1-baolu.lu@linux.intel.com> <20231204150744.db3hfpq4v55cuavn@localhost> From: Baolu Lu In-Reply-To: <20231204150744.db3hfpq4v55cuavn@localhost> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/4/23 11:07 PM, Joel Granados wrote: > On Thu, Oct 26, 2023 at 10:49:24AM +0800, Lu Baolu wrote: >> Hi folks, >> >> This series implements the functionality of delivering IO page faults to >> user space through the IOMMUFD framework for nested translation. Nested > Does this mean the IOPF_CAPABLE HWPT needs to be parented by a HWPT > created with IOMMU_HWPT_ALLOC_NEST_PARENT set? No. It's generic, nested translation is simply a use case that is currently feasible. Best regards, baolu