Date: Thu, 24 Oct 1996 20:29:31 +0200 (MET DST) From: Tor Egge <Tor.Egge@idt.ntnu.no> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/1880: kernel crash during boot when using 512 MB memory Message-ID: <199610241829.UAA09542@ikke.idt.unit.no> Resent-Message-ID: <199610241830.LAA12508@freefall.freebsd.org>
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>Number: 1880
>Category: kern
>Synopsis: kernel crash during boot when using 512 MB memory
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Oct 24 11:30:01 PDT 1996
>Last-Modified:
>Originator: Tor Egge
>Organization:
Norwegian University of Science and Technology, Trondheim, Norway
>Release: FreeBSD 2.2-CURRENT i386
>Environment:
FreeBSD ikke.idt.unit.no 2.2-CURRENT FreeBSD 2.2-CURRENT #1: Thu Oct 24 02:55:40 MET DST 1996 root@ikke.idt.unit.no:/usr/src/sys-UP/compile/TEGGE i386
>Description:
Using
option "MAXMEM=(512*1024)"
did not result in a running kernel utilizing all available memory.
It resulted in a very quick crash during boot:
kmem_suballloc: bad status return of 3
panic: kmem_suballoc
>How-To-Repeat:
Install 512 MB in a PC, and configure the kernel to use it.
>Fix:
One alternative is to increase the kernel virtual memory area
from 252 MB to 508 MB. A patch for this is appended here.
libkvm, ps and gdb must be recompiled.
Index: sys/i386/conf/Makefile.i386
===================================================================
RCS file: /export/akg1/cvs/src/sys/i386/conf/Makefile.i386,v
retrieving revision 1.89
diff -c -r1.89 Makefile.i386
*** Makefile.i386 1996/10/08 22:08:44 1.89
--- Makefile.i386 1996/10/23 14:01:24
***************
*** 36,42 ****
.endif
COPTS= ${INCLUDES} ${IDENT} -DKERNEL
CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
! LOAD_ADDRESS?= F0100000
NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} $<
NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${PARAM} $<
--- 36,42 ----
.endif
COPTS= ${INCLUDES} ${IDENT} -DKERNEL
CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
! LOAD_ADDRESS?= E0100000
NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} $<
NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${PARAM} $<
Index: sys/i386/include/pmap.h
===================================================================
RCS file: /export/akg1/cvs/src/sys/i386/include/pmap.h,v
retrieving revision 1.46
diff -c -r1.46 pmap.h
*** pmap.h 1996/10/13 03:14:57 1.46
--- pmap.h 1996/10/23 03:23:56
***************
*** 91,97 ****
#define NKPT 9 /* actual number of kernel page tables */
#endif
#ifndef NKPDE
! #define NKPDE 63 /* addressable number of page tables/pde's */
#endif
/*
--- 91,97 ----
#define NKPT 9 /* actual number of kernel page tables */
#endif
#ifndef NKPDE
! #define NKPDE 127 /* addressable number of page tables/pde's */
#endif
/*
>Audit-Trail:
>Unformatted:
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