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Intel 5-level paging, referred to simply as 5-level paging in Intel documents, is a processor extension for the x86-64 line of processors. [ 1 ] : 11 It extends the size of virtual addresses from 48 bits to 57 bits by adding an additional level to x86-64's multilevel page tables , increasing the addressable virtual memory from 256 TiB to 128 PiB .
For some processors, a mode can be enabled with a fifth table, the 512-entry page-map level 5 table; this means that 57 bits of virtual page number are translated, giving a virtual address space of up to 128 PB. [10]: 141–153 In the page table entries, in the original specification, 40 bits of physical page number are implemented.
It is also helpful to use large pages in the host page tables to reduce the number of levels (e.g., in x86-64, using 2 MB pages removes one level in the page table). Since memory is typically allocated to virtual machines at coarse granularity, using large pages for guest-physical translation is an obvious optimization, reducing the depth of ...
If set, enables 32-bit paging mode to use 4 MiB huge pages in addition to 4 KiB pages. If PAE is enabled or the processor is in x86-64 long mode this bit is ignored. [14] 5: PAE: Physical Address Extension: If set, changes page table layout to translate 32-bit virtual addresses into extended 36-bit physical addresses. 6: MCE: Machine Check ...
Windows 10 October 2018 Update (Version 1809) Includes WDDM 2.5. [52] Updates to Display driver development in Windows 10, version 1809 include the following features: [53] Shader Model 6.3, adding support for DirectX12 Raytracing (DXR). [54] Raytracing, in order to support hardware-accelerated raytracing in Direct3D 12.
The page-directory entry with PS set to 0 behaves as without PSE. If newer PSE-36 capability is available on the CPU, as checked using the CPUID instruction, then 4 more bits, in addition to normal 10 bits, are used inside a page-directory entry pointing to a large page. This allows a large page to be located in 36-bit address space.
The miniport driver and protocol driver actually communicate with the corresponding miniport and protocol interfaces that reside in the intermediate driver. This design enables adding several chained intermediate drivers between the miniport and protocol drivers.
August 10, 2021 This update is available for Enterprise LTSB and IoT Enterprise LTSB editions, and for systems based on Intel Clover Trail chipset only. This update is no longer available from Windows Update, Microsoft Update Catalog or other release channels since September 12, 2023. 10.0.14393.4651 [160] KB5005573 Public release: September 14 ...
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