<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 12 (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:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@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:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
span.EmailStyle21
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
span.EmailStyle22
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
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="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">Since I discovered that the .inf file overrides the initial values I saw being set in NVMeFindAdapter(), I was just trying “to-go-with-the-flow” and use the .inf file since it appeared that was the preferred
method of creating registry keys. Then I’d call NVMeWriteRegistry() to update the registry entries I created to see the values I want to see.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I believe I did verify I’m passing a non-zero value. I made a change to the driver to see if I figured this out, but I have been unable to verify if this worked because my test system’s hard drive crashed-and-burned
and haven’t been able to fix it yet </span><span style="font-family:Wingdings;color:#1F497D">L</span><span style="color:#1F497D">.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Luse, Paul E
<br>
<b>Sent:</b> Tuesday, May 08, 2012 12:33 PM<br>
<b>To:</b> Freyensee, James P; nvmewin@lists.openfabrics.org<br>
<b>Subject:</b> RE: Exposing read-only values in registry for validation...<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Jay-<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Sorry, read this too quickly. The comments on the non-storport API still applies, but I didn’t realize you were using the inf to create the keys and
</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">NVMeWriteRegistry</span><span style="font-size:9.5pt;font-family:Consolas;color:black">()</span><span style="font-size:10.0pt;color:#1F497D">to write
to the reg. Did you verify that are passing in a non-zero value into that function as we don’t have other callers to it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Thx<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Paul<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Luse, Paul E
<br>
<b>Sent:</b> Tuesday, May 08, 2012 12:15 PM<br>
<b>To:</b> Freyensee, James P; <a href="mailto:nvmewin@lists.openfabrics.org">nvmewin@lists.openfabrics.org</a><br>
<b>Subject:</b> RE: Exposing read-only values in registry for validation...<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Jay,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">A storport minipoprt has a limit set of API that are ‘legal’ you are proposing calls that we can’t use so I wouldn’t even try to investigate you’re implemented. Instead look at
<a href="http://msdn.microsoft.com/en-us/library/windows/hardware/ff567492%28v=vs.85%29.aspx">
http://msdn.microsoft.com/en-us/library/windows/hardware/ff567492%28v=vs.85%29.aspx</a> and see if works for you.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Thx<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Paul<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:nvmewin-bounces@lists.openfabrics.org">nvmewin-bounces@lists.openfabrics.org</a>
<a href="mailto:[mailto:nvmewin-bounces@lists.openfabrics.org]">[mailto:nvmewin-bounces@lists.openfabrics.org]</a>
<b>On Behalf Of </b>Freyensee, James P<br>
<b>Sent:</b> Monday, May 07, 2012 1:56 PM<br>
<b>To:</b> <a href="mailto:nvmewin@lists.openfabrics.org">nvmewin@lists.openfabrics.org</a><br>
<b>Subject:</b> [nvmewin] Exposing read-only values in registry for validation...<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I want to expose the values of ‘NumMsiMsgGranted’ and ‘NumMsiMsgGranted’in the NVMe driver in the registry as read-only for validation purposes (by eyeball or by code I have which can go get any registry key asked).
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I thought just using <i>ZwCreateKey() </i>or <i>RtlWriteRegistryValue()</i> could serve my purpose. However, I see that registry entries like ‘Device Entries’ are defined in nvme.inf and then accessed by the
<i>NVMeFetchRegistry() </i>method. Since I assumed ‘NumMsiMsgGranted’ and ‘NumMsiMsgGranted’ would be set upon driver load, I thought
<i>NVMeFetchRegistry()</i> could write the values to new registry entries via:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> memcpy((PVOID)pBuf, (PVOID)(&pAE->ResMapTbl.NumMsiMsgGranted),<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">sizeof</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(ULONG));<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> NVMeWriteRegistry(pAE, NUMMSIMSGGRANTED,
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> Type, pBuf,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> Len);</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">With those registry entries defined in the .inf file so they are already created:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#7030A0">HKR, Parameters\Device, NumMsiMsgGranted, %REG_DWORD%, 0x00000000 ; Number of MSI messages granted in system. RO entry.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#7030A0">HKR, Parameters\Device, NumActiveCores, %REG_DWORD%, 0x00000000 ; Number of active cores in system. This would be a RO entry.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, it does not seem to be the case as I still see 0’s.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a recommended way of creating registry values to expose NVMe variables for state-validating purposes?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks!<o:p></o:p></p>
</div>
</body>
</html>