diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2006-03-15 21:04:16 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2006-03-15 21:04:16 +0000 |
| commit | 704d271eed5d1b0c71e12451edc30823a002de3a (patch) | |
| tree | 8c7adcb6bd2c67f311d4483009f82d66841c9daa | |
| parent | e08d7a2395baaf134e55c221ae906ed6fd19592e (diff) | |
mention machdep.allowaperture can be lowered
(and remove mention of XFree86 snuck in here by someone who did NOT
understand how wrong that is)
| -rw-r--r-- | share/man/man4/xf86.4 | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/share/man/man4/xf86.4 b/share/man/man4/xf86.4 index f38cd305e2d..346e388bd7c 100644 --- a/share/man/man4/xf86.4 +++ b/share/man/man4/xf86.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: xf86.4,v 1.10 2005/04/20 01:30:26 jaredy Exp $ +.\" $OpenBSD: xf86.4,v 1.11 2006/03/15 21:04:15 deraadt Exp $ .\" .\" Copyright (c) 1998 Matthieu Herrb .\" All rights reserved. @@ -43,7 +43,17 @@ and to the PCI configuration registers for use by the X servers when running with a kernel security level greater than 0. .Pp -The XFree86 and X.Org X servers require the use of this driver. +The X servers require the use of this driver for +.Xr isa 4 +or +.Xr pci 4 +video cards on +.Ar alpha , +.Ar amd64 , +.Ar i386 , +.Ar macpppc , +and +.Ar sparc64 Ns . .Sh ACCESS CONTROL Access to the .Pa /dev/xf86 @@ -53,7 +63,7 @@ variable .Va machdep.allowaperture is greater than or equal to 1. This variable (which has a default value of 0) -can only be manipulated when the security level +can only be raised when the security level is less than or equal to 0, so it should be set in .Pa /etc/sysctl.conf . @@ -75,8 +85,7 @@ in addition to allowing access to .Xr pci 4 configuration registers, the aperture driver allows access to the whole first megabyte of physical -memory, permitting use of the int10 emulation in XFree86 4.x and X.Org 6.8 -and later. +memory, permitting use of the int10 emulation in X.Org 6.8 and later. Note that this can cause some security problems, since the process that has access to the aperture driver can also access part of the kernel memory. @@ -94,10 +103,7 @@ This mode is not supported on alpha or sparc64. .Xr sysctl 8 .Sh HISTORY .Pa /dev/xf86 -was introduced as a loadable kernel module for -.Nx 0.9 c -with XFree86 3.1. -It was integrated as an in-kernel device on +was integrated as an in-kernel device on .Ox 2.3 . It is required in order to allow access to I/O ports for all X servers since .Ox 2.4 . |