50 lines
5.0 KiB
XML
50 lines
5.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<mxfile host="app.diagrams.net" modified="2026-07-23T00:00:00.000Z" agent="techviz-harness" version="24.7.17" type="device">
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<diagram id="page-fault-layers-in-a-vm" name="세 fault 는 변환 사슬의 서로 다른 단계에서 갈라져 나가 서로 다른 계층이 받는다">
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<mxGraphModel dx="685" dy="523" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
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<root>
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<mxCell id="0"/>
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<mxCell id="1" parent="0"/>
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<mxCell id="n_guest-page-table" value="Guest Page Table<br/>GVA → GPA" tooltip="첫 번째 translation 단계. 여기서 접근을 완료할 수 없으면 Guest Page Fault 가 난다. | Evidence: L2443-L2445, L2484-L2485" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;" vertex="1" parent="1">
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<mxGeometry x="166.5" y="70.0" width="150.0" height="71.0" as="geometry"/>
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</mxCell>
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<mxCell id="n_qemu-backing" value="QEMU · Guest RAM Backing<br/>Host Virtual Memory" tooltip="Host 의 일반 userspace 메모리로 관리되는 자리. demand allocation 이나 reclaim, swap 때문에 여기서 fault 가 난다. | Evidence: L2504-L2504, L2514-L2519" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;" vertex="1" parent="1">
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<mxGeometry x="376.5" y="60.0" width="167.0" height="91.0" as="geometry"/>
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</mxCell>
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<mxCell id="n_ept" value="EPT<br/>GPA → HPA" tooltip="두 번째 translation 단계. Guest translation 이 성공한 뒤 여기서 막히면 EPT Violation 이 난다. | Evidence: L2465-L2469, L2484-L2485" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;strokeColor=#2563eb;strokeWidth=2;" vertex="1" parent="1">
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<mxGeometry x="70.0" y="247.0" width="150.0" height="71.0" as="geometry"/>
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</mxCell>
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<mxCell id="n_guest-kernel" value="Guest Kernel" tooltip="Guest Page Fault 를 받는 계층. | Evidence: L2487-L2487, L2493-L2494" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;" vertex="1" parent="1">
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<mxGeometry x="280.0" y="250.5" width="150.0" height="64.0" as="geometry"/>
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</mxCell>
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<mxCell id="n_host-kernel" value="Host Kernel" tooltip="Host Page Fault 를 받아 필요한 Host page 를 처리하는 계층. | Evidence: L2521-L2525" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;" vertex="1" parent="1">
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<mxGeometry x="490.0" y="250.5" width="150.0" height="64.0" as="geometry"/>
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</mxCell>
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<mxCell id="n_kvm" value="KVM" tooltip="EPT Violation 을 VM Exit 뒤에 받는 계층. | Evidence: L2471-L2473, L2487-L2487" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;" vertex="1" parent="1">
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<mxGeometry x="280.0" y="414.0" width="150.0" height="64.0" as="geometry"/>
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</mxCell>
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<mxCell id="e_ept-violation-branch" value="EPT Violation · VM Exit" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=2;endArrow=block;endFill=1;dashed=1;" edge="1" parent="1" source="n_ept" target="n_kvm">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="250.0" y="338.0" as="offset"/>
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</mxGeometry>
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</mxCell>
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<mxCell id="e_guest-fault-branch" value="Guest Page Fault" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=2;endArrow=block;endFill=1;dashed=1;" edge="1" parent="1" source="n_guest-page-table" target="n_guest-kernel">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="302.8" y="167.8" as="offset"/>
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</mxGeometry>
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</mxCell>
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<mxCell id="e_host-fault-branch" value="Host Page Fault" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=2;endArrow=block;endFill=1;dashed=1;" edge="1" parent="1" source="n_qemu-backing" target="n_host-kernel">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="512.5" y="172.8" as="offset"/>
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</mxGeometry>
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</mxCell>
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<mxCell id="e_translation-continues" value="GPA" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=2;endArrow=block;endFill=1;" edge="1" parent="1" source="n_guest-page-table" target="n_ept">
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<mxGeometry relative="1" as="geometry">
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<mxPoint x="188.8" y="166.0" as="offset"/>
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</mxGeometry>
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</mxCell>
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</root>
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</mxGraphModel>
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</diagram>
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</mxfile>
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