Unit OS5: Windows Memory Management

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8Large PagesCan specify other drivers to map with large pages:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\MemoryManagement\LargePageDrivers (multi-string)Applications can use large pages for processmemoryVirtualAlloc with MEM_LARGE_PAGE flagCan query if system supports large pages withGetLargePageMinimum
9Large PagesDisadvantage of large pages:disables kernel write protectionWith small pages, OS/driver code pages are mapped as readonly; with large pages, entire area must be mapped read/writeDrivers can then modify/corrupt system & driver code withoutimmediately crashing systemDriver Verifier turns large pages offCan also override by changingHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\MemoryManagement\LargePageMinimum to FFFFFFFF
Page 1 and 2: Windows Memory Management (I)Memory
Page 3 and 4: 3IntroductionMain Tasks:Translating
Page 5 and 6: 5Main ComponentsSystem services for
Page 7: 7Large PagesArchitecture Small Page
Page 11 and 12: 11Reserving & Committing MemoryOpti
Page 13 and 14: 13Shared MemoryLike most modern OS
Page 15 and 16: 15Viewing DLLs & Memory MappedFiles
Page 17 and 18: 17Controlling DEPBCD nx values:OptI
Page 19 and 20: 19DEP on 32-bit WindowsHardware DEP
Page 21 and 22: 21Copy-On-Write PagesUsed for shari
Page 23 and 24: 23How Copy-On-Write WorksAfterOrig.
Page 25 and 26: 25Virtual Address Space (V.A.S.)Pro
Page 27 and 28: 27Windows User ProcessAddress Space
Page 29 and 30: 29Large Address Space AwareImagesIm
Page 31 and 32: 31Address Windowing Extensions32-bi
Page 33 and 34: 33Working Set ManagementDefault wor
Page 35 and 36: 35Look-Aside ListsAnother fast memo
Page 37 and 38: Heap Manager StructureTwo layers:Co
Page 39 and 40: Physical Memory Limits32-Bit 64-Bit
Page 41 and 42: 41Cache SupportSystem wide cache me
Page 43 and 44: 43Windows API MemoryManagement Arch
Page 45 and 46: 45Source Code ReferencesWindows Res
Page 47: ContentView DLLs using “listdll.e

Unit OS5: Windows Memory Management

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