David, That was it! Thanks for your help. tim On Mon, 21 May 2001, David Greenman wrote: > >Hello all, > >I've been experiencing some major problems running FreeBSD on 4GB of > >memory, and I was curious if anyone has experienced this before. > > > >Bascially, the problem is that FreeBSD just won't boot. Shortly after the > >kernel gains control of the system, it panics... > > > >Fatal trap 12: page fault while in kernel mode > >mp_lock = 0000000b; cpuid = 0; lapic.id = 00000000 > >fault virtual address = 0xbff11000 > >fault code = supervisor write, page not present > >instruction pointer = 0x8:0xc027e48c > >stack pointer = 0x10:0xc03c4f30 > >frame pointer = 0x10:0xc03c4f3c 95 > >code segment = base 0x0, limit 0xfffff, type 0x1b > > = DPL 0, pres 1, def32 1, gran 1 > >processor eflags = interrupt enabled, resume, IOPL = 0 > >current process = Idle > >interrupt mask = net tty bio cam <- SMP: XXX > >kernel: type 12 trap, code=0 > >Stopped at 0xc027e48c: movl %edx,0xbfc00000(,%eax,4) > > > >The IP is pointing to the pmap_map() loop. So it's clearly having problems > >mapping out the VM. > > > >I have yet to do any rigorous debugging, but I thought I would run this by > >the mailing list before I do. The system is running on a Tyan Tiger LE > >board with dual PIIIs (860Mhz) and 4 1GB (133Mhz) SiliconTech chips. > > > >I have tested Linux on this same configuration, and while it boots > >normally, it will eventually panic with a similar error once you start > >doing some real work. > > > >Any thoughts? > > The kernel is probably running out of the initially allocated kernel page > table pages. Try upping it with 'options NKPT=64' in your kernel config > file. > > -DG > > David Greenman > Co-founder, The FreeBSD Project - http://www.freebsd.org > President, TeraSolutions, Inc. - http://www.terasolutions.com > Pave the road of life with opportunities. > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
