pmap_map - map a physical memory range into kernel virtual address (KVA) space

CONTENTS

Synopsis
Description
Implementation Notes
Return Values
See Also
Authors

.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

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.

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.

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.

pmap(9)

This manual page was written by
.An Bruce M Simpson Aq bms@spc.org .

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