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2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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26.Dd July 21, 2003
27.Dt PMAP_OBJECT_INIT_PT 9
28.Os
29.Sh NAME
30.Nm pmap_object_init_pt
31.Nd initialize page tables for a VM object
32.Sh SYNOPSIS
33.In sys/param.h
34.In vm/vm.h
35.In vm/pmap.h
36.Ft void
37.Fo pmap_object_init_pt
38.Fa "pmap_t pmap" "vm_offset_t addr" "vm_object_t object"
39.Fa "vm_pindex_t pindex" "vm_size_t size" "int limit"
40.Fc
41.Sh DESCRIPTION
42The
43.Fn pmap_object_init_pt
44function preloads the page table entries into the specified physical map
45.Fa pmap ,
46for the given
47.Fa object
48at the virtual address
49.Fa addr ,
50for
51.Fa size
52bytes, beginning at the page index
53.Fa pindex
54within the object.
55The map bits
56.Fa limit
57are heeded when creating the mapping.
58.Sh IMPLEMENTATION NOTES
59This function is not strictly required by an architecture's
60.Xr pmap 9
61implementation, but it does provide performance benefits if implemented.
62.Pp
63It is intended to eliminate the blast of soft faults on process
64startup, and immediately following a call to
65.Xr mmap 2 .
66.Sh SEE ALSO
67.Xr pmap 9 ,
68.Xr vm_map 9
69.Sh AUTHORS
70This manual page was written by
71.An Bruce M Simpson Aq Mt bms@spc.org .
72