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In logical block addressing, only one number is used to address data, and each linear base address describes a single block. The LBA scheme replaces earlier schemes which exposed the physical details of the storage device to the software of the operating system. Chief among these was the cylinder-head-sector (CHS) scheme, where blocks were addressed by means
The page table is where mappings of virtual addresses to physical addresses are stored, with each mapping also known as a page table entry (PTE). The translation process Actions taken upon a virtual to physical address translation. Each translation is restarted if a TLB miss occurs, so that the lookup can occur correctly through hardware.
Use by central processing unit. In a computer supporting virtual memory, the term physical address is used mostly to differentiate from a virtual address.In particular, in computers utilizing a memory management unit (MMU) to translate memory addresses, the virtual and physical addresses refer to an address before and after translation performed by the MMU, respectively.
In computer architecture, register renaming is a technique that abstracts logical registers from physical registers. Every logical register has a set of physical registers associated with it. When a machine language instruction refers to a particular logical register, the processor transposes this name to one specific physical register on the fly.
Address translation hardware in the CPU, often referred to as a memory management unit (MMU), automatically translates virtual addresses to physical addresses. Software within the operating system may extend these capabilities, utilizing, e.g., disk storage , to provide a virtual address space that can exceed the capacity of real memory and ...
A translation lookaside buffer ( TLB) is a memory cache that stores the recent translations of virtual memory to physical memory. It is used to reduce the time taken to access a user memory location. [1] It can be called an address-translation cache. It is a part of the chip's memory-management unit (MMU).
Second Level Address Translation. Second Level Address Translation (SLAT), also known as nested paging, is a hardware-assisted virtualization technology which makes it possible to avoid the overhead associated with software-managed shadow page tables . AMD has supported SLAT through the Rapid Virtualization Indexing (RVI) technology since the ...
Network address translation. Network address translation ( NAT) is a method of mapping an IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device. [1] The technique was originally used to bypass the need to assign a new address to every host ...