Arch manual pages

ALLOC_VM_AREA(9) Memory Management in Linux ALLOC_VM_AREA(9)

NAME

alloc_vm_area - allocate a range of kernel address space

SYNOPSIS

struct vm_struct * alloc_vm_area(size_t size, pte_t ** ptes);

ARGUMENTS

size
size of the area
ptes
returns the PTEs for the address space

RETURN

NULL on failure, vm_struct on success
This function reserves a range of kernel address space, and allocates pagetables to map that range. No actual mappings are created.
If ptes is non-NULL, pointers to the PTEs (in init_mm) allocated for the VM area are returned.

COPYRIGHT

April 2017 Kernel Hackers Manual 4.10