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In computing, Physical Address Extension (PAE), sometimes referred to as Page Address Extension, [1] is a memory management feature for the x86 architecture. PAE was first introduced by Intel in the Pentium Pro , and later by AMD in the Athlon processor. [ 2 ]
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 ...
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 ...
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.
A few computers have a main memory larger than the virtual address space of a process, such as the Magic-1, [34] some PDP-11 machines, and some systems using 32-bit x86 processors with Physical Address Extension. This nullifies a significant advantage of paging, since a single process cannot use more main memory than the amount of its virtual ...
Updated December 9, 2024 at 4:30 PM Multiple college students in Colorado were taken to a hospital overnight after overdosing at a fraternity house due to a "possibly tainted batch of cocaine ...
9 1 Instruction-fetching-event mask 9 2 Storage-alteration-event mask 9 3 GR-alteration-event mask 9 4 Store-using-real-address-event mask 9 8 Branch-address control 9 10 Storage-alteration-space control 9 16-31 PER general-register masks 10 1-31 PER starting address 11 1-31 PER ending address 12 0 Branch-trace control 12 1-29 Trace-entry address
A woman has been sexually assaulted and six people have been pushed from their bikes by a group of people believed to have been travelling on a moped or motorbike.