From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by mx.groups.io with SMTP id smtpd.web12.2409.1604693033086676542 for ; Fri, 06 Nov 2020 12:03:53 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@ibm.com header.s=pp1 header.b=gru//fDG; spf=pass (domain: linux.ibm.com, ip: 148.163.156.1, mailfrom: tobin@linux.ibm.com) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0A6K31xB088219; Fri, 6 Nov 2020 15:03:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=mime-version : date : from : to : cc : subject : in-reply-to : references : message-id : content-type : content-transfer-encoding; s=pp1; bh=iPl3HIYxqgBgiuDLdvsEQ5b3+RdlfUD7Ue5UqfE62D4=; b=gru//fDGpGcCCTxjCyar/Y5Dq2tdri3yganx2x9TB7fADD/NK2/mN7VDoYGCreXVo4id mbRfygaPata++ysUzdOUF9K+7H1iTM3wUXpsa8nV2YO3EqTOsP7J25eyIQEotnxpnd6R 1f16v4EbKdtRkMvORGcAN4i/86rxe68SkX6jypiWcEcc5VYndl2Ads92olwM/bwisf85 AVtpcCiY3uiXwW3s9myRDF0hun9/n6g+KfuVChiKzGvvLiRxTVfFHQa16DaV7pD0LJBF E+2CyVO3i6W2lX1g6KLnv7ZjOLmxck2oQIz3rI4uCVCvtXaqmg6YB91GjD/CSmk9pQV0 IA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 34nd65r2ch-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Nov 2020 15:03:50 -0500 Received: from m0098410.ppops.net (m0098410.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 0A6K39vu088862; Fri, 6 Nov 2020 15:03:35 -0500 Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0a-001b2d01.pphosted.com with ESMTP id 34nd65r140-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Nov 2020 15:03:35 -0500 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0A6K3Gco028069; Fri, 6 Nov 2020 20:03:19 GMT Received: from b01cxnp23034.gho.pok.ibm.com (b01cxnp23034.gho.pok.ibm.com [9.57.198.29]) by ppma05wdc.us.ibm.com with ESMTP id 34h09nthjc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 Nov 2020 20:03:19 +0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0A6K3I4X7471830 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 Nov 2020 20:03:18 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F417DB2064; Fri, 6 Nov 2020 20:03:17 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EB91CB205F; Fri, 6 Nov 2020 20:03:16 +0000 (GMT) Received: from ltc.linux.ibm.com (unknown [9.16.170.189]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 6 Nov 2020 20:03:16 +0000 (GMT) MIME-Version: 1.0 Date: Fri, 06 Nov 2020 15:03:16 -0500 From: "Tobin Feldman-Fitzthum" To: lersek@redhat.com Cc: devel@edk2.groups.io, dovmurik@linux.vnet.ibm.com, Dov.Murik1@il.ibm.com, ashish.kalra@amd.com, brijesh.singh@amd.com, tobin@ibm.com, david.kaplan@amd.com, jon.grimm@amd.com, thomas.lendacky@amd.com, jejb@linux.ibm.com, frankeh@us.ibm.com, "Dr. David Alan Gilbert" Subject: Re: [edk2-devel] RFC: Fast Migration for SEV and SEV-ES - blueprint and proof of concept In-Reply-To: <25377952-d8cf-3a64-d147-4e99379fa7b8@redhat.com> References: <933a5d2b-a495-37b9-fe8b-243f9bae24d5@redhat.com> <61acbc7b318b2c099a106151116f25ea@linux.vnet.ibm.com> <25377952-d8cf-3a64-d147-4e99379fa7b8@redhat.com> Message-ID: <772d9f9ec5b758b0b13536cf883165c8@linux.vnet.ibm.com> X-Sender: tobin@linux.ibm.com User-Agent: Roundcube Webmail/1.0.1 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-06_06:2020-11-05,2020-11-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 mlxscore=0 mlxlogscore=851 bulkscore=0 priorityscore=1501 spamscore=0 malwarescore=0 clxscore=1015 suspectscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011060140 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit On 2020-11-06 10:45, Laszlo Ersek wrote: > On 11/04/20 19:27, Tobin Feldman-Fitzthum wrote: > >> In the meantime, perhaps there is something we can do to help >> make our current work more clear. We could potentially explain >> things on a call or create some additional documentation. While >> our goal is not to shove this version of the trampoline upstream, >> it is significant to our plan as a whole and we want to help >> people understand it. > > From my personal (selfish) perspective, a call would be > counter-productive. Regarding documentation, I do have one thought that > might help, with the (very tricky) page table manipulations / phases: > diagrams (ascii or svg, perhaps). I don't know if that will help me > look > at this in detail earlier, but *when* I will look at it, it will > definitely help me. > > (If there are diagrams already, then I apologize for not noticing > them.) > We can work on some diagrams. I have a couple informal ones on paper. Adding something visual to the docs seems like a good idea. -Tobin > Thanks! > Laszlo > > > >