


Virtual memory is a memory management technique used by operating systems to extend the available memory by combining physical RAM with space on a hard drive or SSD. More details https://windows101tricks.com/what-is-virtual-memory/
Memory management is the builtβin system and set of techniques that the operating system uses to organize and control how your PCβs memory is used so everything runs smoothly and your system stays stable. More details https://windows101tricks.com/windows-memory-management/
#memory #Ram #PAGEFILE #VRAM #VirtualMemory #TechGuide #technology #tech
Any technical descriptions of the recent iPad virtual memory design and virtual swap around?
Iβve been poking at DDG and Google search and the WWDC Developer app for way too long, and can find basically nothing. Nothing past the Apple announcement text regurgitated, that is.
Virtual memory and physical memory, and paging and swapping, I understand, and iOS has no dirty paging, but finding technical details of iPadOS and what Apple calls virtual swap (WWDC22, etc) escapes me.
Cloest I can find for technical info is the iOS memory deep dive from WWDC18. Which predates the virtual swap work.
To satisfy automotive safety and security requirements, memory protection mechanisms are an essential component of automotive microcontrollers. In today's available systems, either a fully physical address-based protection is implemented utilizing a memory protection unit, or a memory management unit takes care of memory protection while also mapping virtual addresses to physical addresses. The possibility to develop software using a large virtual address space, which is agnostic to the underlying physical address space, allows for easier software development and integration, especially in the context of virtualization. In this work, we showcase an extension to the current RISC-V SPMP proposal that enables address redirection for selected address regions, while maintaining the fully deterministic behavior of a memory protection unit.
Virtual Memory for Real-time RISC-V systems using hPMP
https://arxiv.org/abs/2504.04498
#HackerNews #VirtualMemory #RISC-V #hPMP #RealTime #Systems #ComputerArchitecture
To satisfy automotive safety and security requirements, memory protection mechanisms are an essential component of automotive microcontrollers. In today's available systems, either a fully physical address-based protection is implemented utilizing a memory protection unit, or a memory management unit takes care of memory protection while also mapping virtual addresses to physical addresses. The possibility to develop software using a large virtual address space, which is agnostic to the underlying physical address space, allows for easier software development and integration, especially in the context of virtualization. In this work, we showcase an extension to the current RISC-V SPMP proposal that enables address redirection for selected address regions, while maintaining the fully deterministic behavior of a memory protection unit.
Die Firma Hohner, bekannt fΓΌr Musikinstrumente, hat in den 1960er/1970er Jahren auch Computer gebaut β inklusive virtueller Speicherverwaltung!
https://homecomputermuseum.de/historie/mittlere-datentechnik/hohner