diff options
| -rw-r--r-- | usr.sbin/memconfig/memconfig.8 | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/usr.sbin/memconfig/memconfig.8 b/usr.sbin/memconfig/memconfig.8 index f91b795c419..b6d83b7b861 100644 --- a/usr.sbin/memconfig/memconfig.8 +++ b/usr.sbin/memconfig/memconfig.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: memconfig.8,v 1.4 2000/04/12 21:47:54 aaron Exp $ +.\" $OpenBSD: memconfig.8,v 1.5 2000/10/14 17:31:40 aaron Exp $ .\" .\" Copyright (c) 1999 Chris Costello .\" All rights reserved. @@ -31,24 +31,21 @@ .Os .Sh NAME .Nm memconfig -.Nd "Control system cache behaviour with respect to memory" +.Nd "control system cache behaviour with respect to memory" .Sh SYNOPSIS -.Nm +.Nm memconfig .Ar list .Op Fl a -.Pp -.Nm +.Nm memconfig .Ar set .Fl b Ar base .Fl l Ar length .Fl o Ar owner .Ar attribute -.Pp -.Nm +.Nm memconfig .Ar clear .Fl o Ar owner -.Pp -.Nm +.Nm memconfig .Ar clear .Fl b Ar base .Fl l Ar length @@ -57,39 +54,42 @@ A number of supported system architectures allow the behaviour of the CPU cache to be programmed to behave differently depending on the region being written. .Pp -.Nm Memconfig +.Nm provides an interface to this facility, allowing CPU cache behavior to be altered for ranges of system physical memory. .Pp These ranges are typically power-of-2 aligned and sized, however the specific rules governing their layout vary between architectures. The -.Nm memconfig +.Nm program does not attempt to enforce these rules, however the system will reject any attempt to set an illegal combination. +.Pp +The operands and their options are as follows: .Bl -tag -width clear .It Ar list List range slots. .Bl -tag -width xxxxxx .It Op Fl a -List all range slots, even those that are inactive +List all range slots, even those that are inactive. .El .It Ar set Set memory range attributes. .Bl -tag -width xxxxxx .It Fl b Ar base -Memory range base address +Memory range base address. .It Fl l Ar length -Length of memory range in bytes, power of 2 +Length of memory range in bytes, power of 2. .It Fl o Ar owner -Text identifier for this setting (7 char max) +Text identifier for this setting (7 char max). .It Ar attribute Attributes applied to this range; one of .Ar uncacheable , .Ar write-combine , .Ar write-through , .Ar write-back , -.Ar write-protect +or +.Ar write-protect . .El .It Ar clear Clear memory range attributes. @@ -98,15 +98,15 @@ Ranges may be cleared by owner or by base/length combination. To clear based on ownership: .Bl -tag -width xxxxxx .It Fl o Ar owner -All ranges with this owner will be cleared +All ranges with this owner will be cleared. .El .Pp To clear based on the base/length combination: .Bl -tag -width xxxxxx .It Fl b Ar base -Memory range base address +Memory range base address. .It Fl l Ar length -Length of memory range in bytes, power of 2 +Length of memory range in bytes, power of 2. .El .Pp Base and length must exactly match an existing range. @@ -114,6 +114,6 @@ Base and length must exactly match an existing range. .Sh SEE ALSO .Xr mtrr 4 .Sh HISTORY -.Nm memconfig +.Nm was originally introduced in FreeBSD 3.3 as .Xr memcontrol 8 . |