Re: 5-CURRENT totally broken on AMD64 in 32-bit mode

On Mon, 17 Nov 2003, David O'Brien wrote:

> The kernel changes of the past week has totally turned my AMD64 machine
> that I use in 32-bit mode running FreeBSD/i386 (GENERIC):
>
> OK boot -v
> cpuid = 0; apic id = 00
> instruction pointer     = 0x0:0xa00
> stack pointer           = 0x0:0xffe
> frame pointer           = 0x0:0x0
> code segment            = base 0x0, limit 0x0, type 0x0
>                         = DPL 0 , pres 0, def32 0, gran 0
> processor eflags        = interrupt enabled, vm86, IOPL = 0
> cuyrrent process        = 0 ()
> kernel: type 30 trap, code=0
> Stopped at      0xa00:  cli
> db> tr
> (null)(0,0,0,0,0) at 0xa00

The changes that break things were made more than a week ago. I sent this
email last week:

> Date: Sun, 9 Nov 2003 09:22:17 +1000 (EST)
> From: Andy Farkas <andyf_at_speednet.com.au>
> To: freebsd-current_at_FreeBSD.ORG
> Subject: kernel halts before booting
>
> My kernels now break into the debugger before booting!
>
> Boot sequence goes like this:
>
> ...
> Hit [Enter] to boot immediately, or any other key for command prompt.
> Booting [/boot/kernel/kernel]...
> cpuid = 0; apic id = 00
> instruction pointer     = 0x0:0xa00
> stack pointer           = 0x0:0xffe
> frame pointer           = 0x0:0x0
> code segment            = base 0x0, limit 0x0, type 0x0
>                         = DPL 0, pres 0, def32 0, gran 0
> processor eflags        = interrupt enabled, vm86, IOPL = 0
> current process         = 0 ()
> kernel: type 30 trap, code=0
> stopped at      0xa00:  cli
> db>

My machine is a:

> db> cont
> Copyright (c) 1992-2003 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights reserved.
> FreeBSD 5.1-CURRENT #0: Fri Nov  7 17:17:10 EST 2003
>     root_at_team2.af.speednet.com.au:/usr/obj/usr/src/sys/TEAM2
> Preloaded elf kernel "/boot/kernel/kernel" at 0xc0751000.
> MPTable: <ASUSTEK0 P54NP4000000>
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Pentium/P54C (132.00-MHz 586-class CPU)
>   Origin = "GenuineIntel"  Id = 0x52c  Stepping = 12
>   Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
> real memory  = 134217728 (128 MB)
> avail memory = 124928000 (119 MB)
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
> Intel Pentium detected, installing workaround for F00F bug


--

 :{ andyf_at_speednet.com.au

        Andy Farkas
    System Administrator
   Speednet Communications
 http://www.speednet.com.au/