SPT Maintenance If guest OS modify one of its page tables, then the corresponding entry of SPT must be updated.
{"Image DocumentName": "SPT MaintenanceIf guest OS modify one of its page tables, then the corresponding entry of SPT must be updated.", "Image ImageDescription": "We call it shadow because SPT is just like the shadow of page tables of guest OS. How to identify this kind of modification? Guest OS could read/write a physical frame with the help of SPT. Mark those physical frames used as guest page tables read-only, so that when a guest OS tries to modify its guest page table, an exception would be triggered. Then VMM checks the modification and updates the corresponding entry on SPT.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}