PMAP_MAP (9) | Kernel routines | Unix Manual Pages



PMAP_MAP (9) \| Kernel routines \| Unix Manual Pages \| :man▋ NAME pmap_map - map a physical memory range into kernel virtual address (KVA) space CONTENTS Synopsis Description Implementation Notes Return Values See Also Authors SYNOPSIS .In sys/param.h .In vm/vm.h .In vm/pmap.h vm_offset_t .Fo pmap_map "vm_offset_t virt" "vm_paddr_t start" "vm_paddr_t end" "int prot"* .Fc DESCRIPTION The `pmap_map` function maps a range of physical addresses into kernel virtual address (KVA) space, from start to end, with protection bits prot. The value passed in virt is treated as a hint for the virtual address of the beginning of the mapping. IMPLEMENTATION NOTES The prot* argument is currently ignored by machine-dependent implementations. Architectures which can support a direct mapped physical to virtual region can return the appropriate address within that region, leaving virt unchanged. RETURN VALUES The `pmap_map` function returns the virtual address of the beginning of the mapping, if the mapping was successfully made; virt will also be updated with the first usable address after the mapped region. If the function is unsuccessful, `NULL` is returned. SEE ALSO pmap(9) AUTHORS

Created by Blin Media, 2008-2013