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Remove long dead options NKPTADD, NKPTADDSHIT.

This commit is contained in:
rkujawa 2013-10-04 15:15:39 +00:00
parent 49ce9c94dc
commit fd725e5dd3
1 changed files with 1 additions and 31 deletions
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32
share/man/man4/options.4
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@ -1,4 +1,4 @@
.\" $NetBSD: options.4,v 1.427 2013/08/22 07:17:11 wiz Exp $
.\" $NetBSD: options.4,v 1.428 2013/10/04 15:15:39 rkujawa Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@ -2345,36 +2345,6 @@ If there, limit the part of the first memory bank used by
.Nx
to value megabytes.
Default is unlimited.
.It Cd options NKPTADD=addvalue
.It Cd options NKPTADDSHIFT=shiftvalue
The
.Tn CPU
specific
.Tn MMU
table for the kernel is pre-allocated at kernel startup time.
Part of it is scaled with
.Va maxproc ,
to have enough room to hold the user program
.Tn MMU
tables; the second part is a fixed amount for the kernel itself.
.Pp
The third part accounts for the size of the file buffer cache.
Its size is either
.Dv NKPTADD
pages (if defined) or memory size in bytes divided by two to
the power of
.Dv NKPTADDSHIFT .
The default is undefined
.Dv NKPTADD
and
.Dv NKPTADDSHIFT=24 ,
allowing for 16 buffers per megabyte of main memory (while
a GENERIC kernel allocates about half of that).
When you get "can't get KPT page" panics, you should increase
.Dv NKPTADD
(if defined), or decrease
.Dv NKPTADDSHIFT
by one.
.It Cd options P5PPC68KBOARD
Add special support for Phase5 mixed 68k+PPC boards.
Currently, this only affects rebooting from