1.\" $OpenBSD: uvm_fault.9,v 1.1 2019/12/05 15:14:28 mpi Exp $ 2.\" $NetBSD: uvm.9,v 1.14 2000/06/29 06:08:44 mrg Exp $ 3.\" 4.\" Copyright (c) 1998 Matthew R. Green 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd $Mdocdate: December 5 2019 $ 29.Dt UVM_FAULT 9 30.Os 31.Sh NAME 32.Nm uvm_fault 33.Nd page fault handling 34.Sh SYNOPSIS 35.In sys/param.h 36.In uvm/uvm.h 37.Ft int 38.Fn uvm_fault "vm_map_t orig_map" "vaddr_t vaddr" "vm_fault_t fault_type" "vm_prot_t access_type" 39.Sh DESCRIPTION 40The 41.Fn uvm_fault 42function is the main entry point for faults. 43It takes 44.Fa orig_map 45as the map the fault originated in, a 46.Fa vaddr 47offset into the map the fault occurred, 48.Fa fault_type 49describing the type of fault, and 50.Fa access_type 51describing the type of access requested. 52.Fn uvm_fault 53returns a standard errno. 54.Sh SEE ALSO 55.Xr pmap 9 56