Contoh soal priority preemptive9/16/2023 ![]() Unallocated pages, and pages allocated to any other application, simply do not have any addresses from the application point of view.Īs a side note, a PF may not be a fatal occurrence. Page tables make it easier to allocate new memory, as each new page can be allocated from anywhere in physical memory.īy such design, it is impossible for an application to access a page that has not been explicitly allocated to it, simply because any memory address, even a completely random one, that application may decide to use, either points to a page allocated to that application, or generates a page fault (PF). The page table is usually invisible to the process. ![]() Most computer architectures based on pages, most notably x86 architecture, also use pages for memory protection.Ī page table is used for mapping virtual memory to physical memory. Virtual memory makes it possible to have a linear virtual memory address space and to use it to access blocks fragmented over physical memory address space. Using a virtual memory mechanism, each page can be made to reside in any location of the physical memory, or be flagged as being protected. ![]() In paging, the memory address space is divided into equal, small pieces, called pages. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |