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-.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com>
-.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com>
-.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org>
-.\"
-.\" SPDX-License-Identifier: GPL-3.0-or-later
-.\"
-.TH proc_pid_pagemap 5 2023-08-15 "Linux man-pages 6.7"
-.SH NAME
-/proc/pid/pagemap \- mapping of virtual pages
-.SH DESCRIPTION
-.TP
-.IR /proc/ pid /pagemap " (since Linux 2.6.25)"
-This file shows the mapping of each of the process's virtual pages
-into physical page frames or swap area.
-It contains one 64-bit value for each virtual page,
-with the bits set as follows:
-.RS
-.TP
-63
-If set, the page is present in RAM.
-.TP
-62
-If set, the page is in swap space
-.TP
-61 (since Linux 3.5)
-The page is a file-mapped page or a shared anonymous page.
-.TP
-60\[en]58 (since Linux 3.11)
-Zero
-.\" Not quite true; see commit 541c237c0923f567c9c4cabb8a81635baadc713f
-.TP
-57 (since Linux 5.14)
-If set, the page is write-protected through
-.BR userfaultfd (2).
-.TP
-56 (since Linux 4.2)
-.\" commit 77bb499bb60f4b79cca7d139c8041662860fcf87
-.\" commit 83b4b0bb635eee2b8e075062e4e008d1bc110ed7
-The page is exclusively mapped.
-.TP
-55 (since Linux 3.11)
-PTE is soft-dirty
-(see the kernel source file
-.IR Documentation/admin\-guide/mm/soft\-dirty.rst ).
-.TP
-54\[en]0
-If the page is present in RAM (bit 63), then these bits
-provide the page frame number, which can be used to index
-.I /proc/kpageflags
-and
-.IR /proc/kpagecount .
-If the page is present in swap (bit 62),
-then bits 4\[en]0 give the swap type, and bits 54\[en]5 encode the swap offset.
-.RE
-.IP
-Before Linux 3.11, bits 60\[en]55 were
-used to encode the base-2 log of the page size.
-.IP
-To employ
-.IR /proc/ pid /pagemap
-efficiently, use
-.IR /proc/ pid /maps
-to determine which areas of memory are actually mapped and seek
-to skip over unmapped regions.
-.IP
-The
-.IR /proc/ pid /pagemap
-file is present only if the
-.B CONFIG_PROC_PAGE_MONITOR
-kernel configuration option is enabled.
-.IP
-Permission to access this file is governed by a ptrace access mode
-.B PTRACE_MODE_READ_FSCREDS
-check; see
-.BR ptrace (2).
-.SH SEE ALSO
-.BR proc (5)