<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:8.0pt;
font-family:"Calibri","sans-serif";}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Verdana","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Calibri","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="ZH-CN" link="#0563C1" vlink="#954F72" style="text-justify-trim:punctuation">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Curious why leaking BIOS configuration to VM is a security problem… Can someone elaborate this view?<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" align="left" style="text-align:left"><a name="_____replyseparator"></a><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
Wang, Zhi A <br>
<b>Sent:</b> Friday, May 27, 2016 6:05 PM<br>
<b>To:</b> intel-gfx@lists.freedesktop.org<br>
<b>Cc:</b> joonas.lahtinen@linux.intel.com; Chris Wilson; Vetter, Daniel; tvrtko.ursulin@linux.intel.com; Tian, Kevin; Lv, Zhiyuan<br>
<b>Subject:</b> FW: Wrt golden MMIO/CFG snaphot in GVT-g<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" align="left" style="text-align:left"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">For me I think maybe i915 could save the snapshot for GVT, then GVT-g patch the snapshot itself, then there won’t be leaking happened I think. Even we wrote a dedicated little program, we would do
the same thing.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" align="left" style="text-align:left"><b><span lang="EN-US" style="font-size:11.0pt">From:</span></b><span lang="EN-US" style="font-size:11.0pt"> Wang, Zhi A
<br>
<b>Sent:</b> Friday, May 27, 2016 12:59 PM<br>
<b>To:</b> <a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>; 'Chris Wilson' <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>; Vetter, Daniel <<a href="mailto:daniel.vetter@intel.com">daniel.vetter@intel.com</a>>;
<a href="mailto:tvrtko.ursulin@linux.intel.com">tvrtko.ursulin@linux.intel.com</a><br>
<b>Cc:</b> Tian, Kevin <<a href="mailto:kevin.tian@intel.com">kevin.tian@intel.com</a>>; Lv, Zhiyuan <<a href="mailto:zhiyuan.lv@intel.com">zhiyuan.lv@intel.com</a>><br>
<b>Subject:</b> Wrt golden MMIO/CFG snaphot in GVT-g<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" align="left" style="text-align:left"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi Guys:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><span lang="EN-US">I received some comments on from Kevin. Mostly his concern is the burden of maintain/releasing the MMIO/CFG snapshot for customers. As we might not have all the SKUs/platform which customers
have, even we release the snapshot file generator for customer, it would still bring some extra effort when customer deploying the SW. And he suggested i915 better i915 could keep the snapshot for GVT-g during module loading. As we have shared some ideas about
the security problem like leaking BIOS configuration to VM, better we could elaborate more ideas and figure out a better approach. Let’s discuss.
</span><span lang="EN-US" style="font-family:Wingdings">J</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><span lang="EN-US">Zhi.<o:p></o:p></span></p>
</div>
</div>
</body>
</html>