From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58465) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dL9mg-0004m6-Fy for qemu-devel@nongnu.org; Wed, 14 Jun 2017 11:00:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dL9mc-0005rz-Kj for qemu-devel@nongnu.org; Wed, 14 Jun 2017 11:00:38 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:42203) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dL9mc-0005rH-BT for qemu-devel@nongnu.org; Wed, 14 Jun 2017 11:00:34 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v5EExMEO129407 for ; Wed, 14 Jun 2017 11:00:32 -0400 Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) by mx0a-001b2d01.pphosted.com with ESMTP id 2b32ujqppm-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 14 Jun 2017 11:00:31 -0400 Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 14 Jun 2017 09:00:28 -0600 References: <7f0b8d00-236d-37e8-5c1f-e7ea8e4b9146@redhat.com> From: Stefan Berger Date: Wed, 14 Jun 2017 11:00:23 -0400 MIME-Version: 1.0 In-Reply-To: <7f0b8d00-236d-37e8-5c1f-e7ea8e4b9146@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Message-Id: <23b82458-1c39-b728-986a-685f64c63a47@linux.vnet.ibm.com> Subject: Re: [Qemu-devel] TPM status List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Laszlo Ersek Cc: Amarnath Valluri , qemu devel list , "Dr. David Alan Gilbert" , Peter Jones , =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= , Javier Martinez Canillas On 06/14/2017 09:51 AM, Laszlo Ersek wrote: > Hi Stefan, > > the MAINTAINERS file doesn't seem to cover any of the TPM-related files > in the tree: > > backends/tpm.c > hw/tpm/ > include/hw/acpi/tpm.h > include/sysemu/tpm* > tpm.c > > but I have a gut feeling that you are semi-officially maintaining TPM > anyway, so I'm going to ask you. :) > > Can you please write a document, to be placed under docs/specs/, that > describes the TPM device from a guest perspective, also explaining how > the guest-visible bits are connected to (current) TPM backend(s)? > > The document wouldn't have to be very long; I think all standardized > interfaces could be mentioned by reference only (by spec names and > locations). The document should however describe any QEMU specifics, and > how the relevant specs are brought together in the implementation. > > Some text files I'm familiar with and can recommend as examples: > - docs/specs/fw_cfg.txt > - docs/specs/pvpanic.txt > - docs/specs/vmgenid.txt > > (There may be more and/or better examples of course.) > > This document should be the starting point for developers that want to > support QEMU's TPM(s) in guest firmware that is different from SeaBIOS. > (You've been maintaining the related SeaBIOS feature.) > > Would you be willing to author such a design document? I'll look into that. Give me some time... Stefan > > Thank you, > Laszlo >