diff --git a/docs/plantuml/sdei_explicit_dispatch.svg b/docs/plantuml/sdei_explicit_dispatch.svg
new file mode 100644
index 0000000..b33944e
--- /dev/null
+++ b/docs/plantuml/sdei_explicit_dispatch.svg
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="767px" preserveAspectRatio="none" style="width:692px;height:767px;" version="1.1" viewBox="0 0 692 767" width="692px" zoomAndPan="magnify"><defs><filter height="300%" id="f13jg8eb0anesb" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="174.7969" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="48.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="48.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="48.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="66.5" y1="48.2969" y2="48.2969"/><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="412.5938" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="263.8984"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="263.8984" y2="676.4922"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="263.8984" y2="676.4922"/><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="1" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="717.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="717.2969" y2="718.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="717.2969" y2="718.2969"/><rect fill="#FA8072" filter="url(#f13jg8eb0anesb)" height="68.2656" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="61.5" y="531.8281"/><rect fill="#FF0000" filter="url(#f13jg8eb0anesb)" height="383.4609" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="375.5" y="284.8984"/><rect fill="#FA8072" filter="url(#f13jg8eb0anesb)" height="68.2656" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="588.5" y="353.1641"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="61" x2="61" y1="38.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="61" x2="61" y1="223.0938" y2="263.8984"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="61" x2="61" y1="263.8984" y2="676.4922"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="61" x2="61" y1="676.4922" y2="717.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="61" x2="61" y1="717.2969" y2="727.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="380" x2="380" y1="38.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="380" x2="380" y1="223.0938" y2="263.8984"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="380" x2="380" y1="263.8984" y2="676.4922"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="380" x2="380" y1="676.4922" y2="717.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="380" x2="380" y1="717.2969" y2="727.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="593.5" x2="593.5" y1="38.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="593.5" x2="593.5" y1="223.0938" y2="263.8984"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="593.5" x2="593.5" y1="263.8984" y2="676.4922"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 1.0,4.0;" x1="593.5" x2="593.5" y1="676.4922" y2="717.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="593.5" x2="593.5" y1="717.2969" y2="727.2969"/><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="87" x="16" y="3"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="73" x="23" y="22.9951">SDEI client</text><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="87" x="16" y="726.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="73" x="23" y="746.292">SDEI client</text><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="39" x="359" y="3"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="25" x="366" y="22.9951">EL3</text><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="39" x="359" y="726.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="25" x="366" y="746.292">EL3</text><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="48" x="567.5" y="3"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="34" x="574.5" y="22.9951">SEL1</text><rect fill="#FEFECE" filter="url(#f13jg8eb0anesb)" height="30.2969" style="stroke: #A80036; stroke-width: 1.5;" width="48" x="567.5" y="726.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="34" x="574.5" y="746.292">SEL1</text><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="174.7969" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="48.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="48.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="48.2969" y2="223.0938"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="66.5" y1="48.2969" y2="48.2969"/><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="412.5938" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="263.8984"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="263.8984" y2="676.4922"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="263.8984" y2="676.4922"/><rect fill="#FFFFFF" filter="url(#f13jg8eb0anesb)" height="1" style="stroke: #FFFFFF; stroke-width: 1.0;" width="10" x="56.5" y="717.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="56.5" x2="56.5" y1="717.2969" y2="718.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="66.5" y1="717.2969" y2="718.2969"/><rect fill="#FA8072" filter="url(#f13jg8eb0anesb)" height="68.2656" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="61.5" y="531.8281"/><rect fill="#FF0000" filter="url(#f13jg8eb0anesb)" height="383.4609" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="375.5" y="284.8984"/><rect fill="#FA8072" filter="url(#f13jg8eb0anesb)" height="68.2656" style="stroke: #A80036; stroke-width: 1.0;" width="10" x="588.5" y="353.1641"/><polygon fill="#A80036" points="368.5,65.2969,378.5,69.2969,368.5,73.2969,372.5,69.2969" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="374.5" y1="69.2969" y2="69.2969"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="73.5" y="64.3638">[1]</text><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="164" x="98.5" y="64.3638">SDEI_EVENT_REGISTER</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="101" x="262.5" y="64.3638">(ev, handler, ...)</text><polygon fill="#A80036" points="77.5,94.4297,67.5,98.4297,77.5,102.4297,73.5,98.4297" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="71.5" x2="379.5" y1="98.4297" y2="98.4297"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="83.5" y="93.4966">[2]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="51" x="108.5" y="93.4966">success</text><polygon fill="#A80036" points="368.5,123.5625,378.5,127.5625,368.5,131.5625,372.5,127.5625" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="374.5" y1="127.5625" y2="127.5625"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="73.5" y="122.6294">[3]</text><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="151" x="98.5" y="122.6294">SDEI_EVENT_ENABLE</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="25" x="249.5" y="122.6294">(ev)</text><polygon fill="#A80036" points="77.5,152.6953,67.5,156.6953,77.5,160.6953,73.5,156.6953" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="71.5" x2="379.5" y1="156.6953" y2="156.6953"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="83.5" y="151.7622">[4]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="51" x="108.5" y="151.7622">success</text><polygon fill="#A80036" points="368.5,181.8281,378.5,185.8281,368.5,189.8281,372.5,185.8281" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="374.5" y1="185.8281" y2="185.8281"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="73.5" y="180.895">[5]</text><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="129" x="98.5" y="180.895">SDEI_PE_UNMASK</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="10" x="227.5" y="180.895">()</text><polygon fill="#A80036" points="77.5,210.9609,67.5,214.9609,77.5,218.9609,73.5,214.9609" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="71.5" x2="379.5" y1="214.9609" y2="214.9609"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="83.5" y="210.0278">[6]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="8" x="108.5" y="210.0278">1</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="142" x="256.5" y="247.3042">&lt;&lt;Business as usual&gt;&gt;</text><polygon fill="#A80036" points="396.5,280.8984,386.5,284.8984,396.5,288.8984,392.5,284.8984" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="390.5" x2="680" y1="284.8984" y2="284.8984"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="402.5" y="279.9653">[7]</text><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="116" x="427.5" y="279.9653">CRITICAL EVENT</text><polygon fill="#FBFB77" filter="url(#f13jg8eb0anesb)" points="306,298.0313,306,323.0313,451,323.0313,451,308.0313,441,298.0313,306,298.0313" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="441" x2="441" y1="298.0313" y2="308.0313"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="451" x2="441" y1="308.0313" y2="308.0313"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="124" x="312" y="315.0981">Critical event triage</text><polygon fill="#A80036" points="576.5,349.1641,586.5,353.1641,576.5,357.1641,580.5,353.1641" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="385.5" x2="582.5" y1="353.1641" y2="353.1641"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="392.5" y="348.231">[8]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="54" x="417.5" y="348.231">dispatch</text><polygon fill="#FBFB77" filter="url(#f13jg8eb0anesb)" points="510,366.2969,510,391.2969,672,391.2969,672,376.2969,662,366.2969,510,366.2969" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="662" x2="662" y1="366.2969" y2="376.2969"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="672" x2="662" y1="376.2969" y2="376.2969"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="141" x="516" y="383.3638">Critical event handling</text><polygon fill="#A80036" points="396.5,417.4297,386.5,421.4297,396.5,425.4297,392.5,421.4297" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="390.5" x2="592.5" y1="421.4297" y2="421.4297"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="21" x="402.5" y="416.4966">[9]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="427.5" y="416.4966">done</text><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="385.5" x2="427.5" y1="450.6953" y2="450.6953"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="427.5" x2="427.5" y1="450.6953" y2="463.6953"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="386.5" x2="427.5" y1="463.6953" y2="463.6953"/><polygon fill="#A80036" points="396.5,459.6953,386.5,463.6953,396.5,467.6953,392.5,463.6953" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="30" x="392.5" y="445.6294">[10]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="155" x="426.5" y="445.6294">sdei_dispatch_event(ev)</text><polygon fill="#FBFB77" filter="url(#f13jg8eb0anesb)" points="297,476.6953,297,501.6953,460,501.6953,460,486.6953,450,476.6953,297,476.6953" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="450" x2="450" y1="476.6953" y2="486.6953"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="460" x2="450" y1="486.6953" y2="486.6953"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="142" x="303" y="493.7622">Prepare SDEI dispatch</text><polygon fill="#A80036" points="82.5,527.8281,72.5,531.8281,82.5,535.8281,78.5,531.8281" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="76.5" x2="374.5" y1="531.8281" y2="531.8281"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="30" x="88.5" y="526.895">[11]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="54" x="122.5" y="526.895">dispatch</text><polygon fill="#FBFB77" filter="url(#f13jg8eb0anesb)" points="8,544.9609,8,569.9609,111,569.9609,111,554.9609,101,544.9609,8,544.9609" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="101" x2="101" y1="544.9609" y2="554.9609"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="111" x2="101" y1="554.9609" y2="554.9609"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="82" x="14" y="562.0278">SDEI handler</text><polygon fill="#A80036" points="363.5,596.0938,373.5,600.0938,363.5,604.0938,367.5,600.0938" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="66.5" x2="369.5" y1="600.0938" y2="600.0938"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="30" x="73.5" y="595.1606">[12]</text><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="184" x="107.5" y="595.1606">SDEI_EVENT_COMPLETE()</text><polygon fill="#FBFB77" filter="url(#f13jg8eb0anesb)" points="291,613.2266,291,638.2266,466,638.2266,466,623.2266,456,613.2266,291,613.2266" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="456" x2="456" y1="613.2266" y2="623.2266"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="466" x2="456" y1="623.2266" y2="623.2266"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="154" x="297" y="630.2935">Complete SDEI dispatch</text><polygon fill="#A80036" points="77.5,664.3594,67.5,668.3594,77.5,672.3594,73.5,668.3594" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="71.5" x2="379.5" y1="668.3594" y2="668.3594"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="30" x="83.5" y="663.4263">[13]</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="197" x="117.5" y="663.4263">resumes preempted execution</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="190" x="232.5" y="700.7026">&lt;&lt;Normal execution resumes&gt;&gt;</text></g></svg>
\ No newline at end of file