ARM Linux Memory Layout and MMU Configuration: Device Tree, Memblock, and Page Tables
Kernel virtual address map on 32‑bit ARM PAGE_OFFSET: base of kernel virtual space at 0xC000_0000 lowmem: direct linear mapping of RAM into the kernel (virt = phys + PAGE_OFFSET); capped at 896 MiB HIGH_MEMORY: first virtual address not linearly mapped (end of lowmem) pkmap: permanent mappings for h...