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Diffstat (limited to 'man4/mem.4')
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diff --git a/man4/mem.4 b/man4/mem.4 deleted file mode 100644 index cfaa99c..0000000 --- a/man4/mem.4 +++ /dev/null @@ -1,81 +0,0 @@ -.\" Copyright (c) 1993 Michael Haardt (michael@moria.de), -.\" Fri Apr 2 11:32:09 MET DST 1993 -.\" -.\" SPDX-License-Identifier: GPL-2.0-or-later -.\" -.\" Modified Sat Jul 24 16:59:10 1993 by Rik Faith (faith@cs.unc.edu) -.TH mem 4 2023-10-31 "Linux man-pages 6.7" -.SH NAME -mem, kmem, port \- system memory, kernel memory and system ports -.SH DESCRIPTION -.I /dev/mem -is a character device file -that is an image of the main memory of the computer. -It may be used, for example, to examine (and even patch) the system. -.P -Byte addresses in -.I /dev/mem -are interpreted as physical memory addresses. -References to nonexistent locations cause errors to be returned. -.P -Examining and patching is likely to lead to unexpected results -when read-only or write-only bits are present. -.P -Since Linux 2.6.26, and depending on the architecture, the -.B CONFIG_STRICT_DEVMEM -kernel configuration option limits the areas -which can be accessed through this file. -For example: on x86, RAM access is not allowed but accessing -memory-mapped PCI regions is. -.P -It is typically created by: -.P -.in +4n -.EX -mknod \-m 660 /dev/mem c 1 1 -chown root:kmem /dev/mem -.EE -.in -.P -The file -.I /dev/kmem -is the same as -.IR /dev/mem , -except that the kernel virtual memory -rather than physical memory is accessed. -Since Linux 2.6.26, this file is available only if the -.B CONFIG_DEVKMEM -kernel configuration option is enabled. -.P -It is typically created by: -.P -.in +4n -.EX -mknod \-m 640 /dev/kmem c 1 2 -chown root:kmem /dev/kmem -.EE -.in -.P -.I /dev/port -is similar to -.IR /dev/mem , -but the I/O ports are accessed. -.P -It is typically created by: -.P -.in +4n -.EX -mknod \-m 660 /dev/port c 1 4 -chown root:kmem /dev/port -.EE -.in -.SH FILES -.I /dev/mem -.br -.I /dev/kmem -.br -.I /dev/port -.SH SEE ALSO -.BR chown (1), -.BR mknod (1), -.BR ioperm (2) |