How vmalloc Maps Discontinuous Physical Pages to a Continuous Virtual Space in Linux

vmalloc allocates virtual memory by mapping non‑contiguous physical pages into a contiguous virtual address range, using vmap_area and vm_struct structures, and follows a three‑step process of finding a hole, allocating pages, and establishing the mappings, with details on its data structures and region layout.

Linuxvmallocvmap

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How vmalloc Maps Discontinuous Physical Pages to a Continuous Virtual Space in Linux