From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1754576AbdEDRdz (ORCPT <rfc822;w@1wt.eu>);
        Thu, 4 May 2017 13:33:55 -0400
Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55233 "EHLO
        mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK)
        by vger.kernel.org with ESMTP id S1753786AbdEDRdr (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 4 May 2017 13:33:47 -0400
Subject: Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get
 supported flags
To: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
References: <1493909787-1848-1-git-send-email-stefanb@linux.vnet.ibm.com>
 <1493909787-1848-2-git-send-email-stefanb@linux.vnet.ibm.com>
 <20170504153416.GA15930@obsidianresearch.com>
 <56703d75-b238-0bad-386a-5b6963e250a1@linux.vnet.ibm.com>
 <20170504172042.GA19932@obsidianresearch.com>
 <cfa2642e-5b6e-de69-b1a0-ddcbfaf691c6@linux.vnet.ibm.com>
 <20170504173130.GA20449@obsidianresearch.com>
Cc: tpmdd-devel@lists.sourceforge.net,
        linux-security-module@vger.kernel.org, jarkko.sakkinen@linux.intel.com,
        linux-kernel@vger.kernel.org
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Thu, 4 May 2017 13:33:41 -0400
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <20170504173130.GA20449@obsidianresearch.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-TM-AS-GCONF: 00
x-cbid: 17050417-0020-0000-0000-00000BDFF73C
X-IBM-SpamModules-Scores: 
X-IBM-SpamModules-Versions: BY=3.00007021; HX=3.00000240; KW=3.00000007;
 PH=3.00000004; SC=3.00000209; SDB=6.00856225; UDB=6.00423843; IPR=6.00635389;
 BA=6.00005326; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000;
 ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015306; XFM=3.00000014;
 UTC=2017-05-04 17:33:44
X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused
x-cbparentid: 17050417-0021-0000-0000-00005C2B86AC
Message-Id: <08065914-2b96-ca1d-2fe0-344472ed9691@linux.vnet.ibm.com>
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-05-04_11:,,
 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0
 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam
 adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000
 definitions=main-1705040260
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 05/04/2017 01:31 PM, Jason Gunthorpe wrote:
> On Thu, May 04, 2017 at 01:28:17PM -0400, Stefan Berger wrote:
>
>>> So allowing request_locality to fail from userspace seems reasonable.
>> What's the best interface to use for this ?
> If locality support is enabled then send a request locality packet to
> userspace and block until return, just like command execution?

We would have to invent a command for that...