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  2. Physical Address Extension - Wikipedia

    en.wikipedia.org/wiki/Physical_Address_Extension

    The Linux kernel includes full PAE-mode support starting with version 2.3.23, [24] in 1999 enabling access of up to 64 GB of memory on 32-bit machines. A PAE-enabled Linux kernel requires that the CPU also support PAE. The Linux kernel supports PAE as a build option and major distributions provide a PAE kernel either as the default or as an option.

  3. 3 GB barrier - Wikipedia

    en.wikipedia.org/wiki/3_GB_barrier

    Many 32-bit computers have 32 physical address bits and are thus limited to 4 GiB (2 32 words) of memory. [3] [4] x86 processors prior to the Pentium Pro have 32 or fewer physical address bits; however, most x86 processors since the Pentium Pro, which was first sold in 1995, have the Physical Address Extension (PAE) mechanism, [5]: 445 which allows addressing up to 64 GiB (2 36 words) of memory.

  4. Intel 5-level paging - Wikipedia

    en.wikipedia.org/wiki/Intel_5-level_paging

    4-level paging of the 64-bit mode. In the 4-level paging scheme (previously known as IA-32e paging), the 64-bit virtual memory address is divided into five parts. The lowest 12 bits contain the offset within the 4 KiB memory page, and the following 36 bits are evenly divided between the four 9 bit descriptors, each linking to a 64-bit page table entry in a 512-entry page table for each of the ...

  5. Executable-space protection - Wikipedia

    en.wikipedia.org/wiki/Executable-space_protection

    The 32-bit PAE desktop kernel (linux-image-generic-pae) in Ubuntu 9.10 and later, also provides the PAE mode needed for hardware with the NX CPU feature. For systems that lack NX hardware, the 32-bit kernels now provide an approximation of the NX CPU feature via software emulation that can help block many exploits an attacker might run from ...

  6. PSE-36 - Wikipedia

    en.wikipedia.org/wiki/PSE-36

    Compared to the Physical Address Extension (PAE) method, PSE-36 is a simpler alternative to addressing more than 4 GB of memory. It uses the Page Size Extension (PSE) mode and a modified page directory table to map 4 MB pages into a 64 GB physical address space. PSE-36's downside is that, unlike PAE, it doesn't have 4-KB page granularity above ...

  7. Page table - Wikipedia

    en.wikipedia.org/wiki/Page_table

    In this case the page is paged out to a secondary store located on a medium such as a hard disk drive (this secondary store, or "backing store", is often called a swap partition if it is a disk partition, or a swap file, swapfile or page file if it is a file). When this happens the page needs to be taken from disk and put back into physical memory.

  8. Enable location settings on Android devices - AOL Help

    help.aol.com/articles/enable-location-settings...

    To get these personalized features, first turn on the location settings for your device, then allow the AOL app or a mobile browser (like Firefox or Chrome) access to your current location. 1.From your home screen, tap Settings. 2. Tap Apps. 3. Tap an app. 4. Tap Permissions. 5. Tap the Toggle button next to "Location" to enable to disable. 6.

  9. Amazon Appstore - Wikipedia

    en.wikipedia.org/wiki/Amazon_Appstore

    Amazon Appstore is an app store for Android-compatible platforms operated by Amazon.com Services, LLC, a subsidiary of Amazon.. The store is primarily used as the storefront for Amazon's Android-based Fire OS. including Amazon Fire tablets, and Amazon Fire TV digital media players, and can be sideloaded and installed manually on third-party Android devices.