Re: 7.0-CURRENT Hang

Hi,

I've encountered the same problem on some old PCs (Pentium/P54C and
DX4ODP).  After applied your patch, these PCs come to boot the
7-current's GENERIC kernel.


Cpuid's result is below.

 * Fujitsu FMV-575D4 (Pentium/P54C, i386)

FreeBSD 4.7-RELEASE #66: Wed Nov 19 17:54:27 JST 2003
    nabe_at_pisces.zodiac.org:/usr/src/sys/compile/DISKLESS_taurus
Timecounter "i8254"  frequency 1193182 Hz
CPU: Pentium/P54C (75.00-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x525  Stepping = 5
  Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory  = 134217728 (131072K bytes)
avail memory = 126812160 (123840K bytes)

taurus:~/cpuid/work/cpuid-3.3 {6} ./cpuid
 eax in    eax      ebx      ecx      edx
00000000 00000001 756e6547 6c65746e 49656e69
00000001 00000525 00000000 00000000 000001bf

Vendor ID: "GenuineIntel"; CPUID level 1

Intel-specific functions:
Version 00000525:
Type 0 - Original OEM
Family 5 - Pentium
Model 2 - 75-200
Stepping 5
Reserved 0


Feature flags: 000001bf:
FPU    Floating Point Unit
VME    Virtual 8086 Mode Enhancements
DE     Debugging Extensions
PSE    Page Size Extensions
TSC    Time Stamp Counter
MSR    Model Specific Registers
MCE    Machine Check Exception
CX8    COMPXCHG8B Instruction

taurus:~/cpuid/work/cpuid-3.3 {7}


 * NEC PC-9821Xa9 (Pentium/P54C, pc98)

FreeBSD 7.0-CURRENT #20: Wed Feb  8 15:47:09 JST 2006
    nabe_at_scorpio.zodiac.org:/FreeBSD/obj-pc98/pc98/FreeBSD/FreeBSD-current/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 2457600 Hz quality 0
CPU: Pentium/P54C (90.01-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x525  Stepping = 5
  Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory  = 67108864 (64 MB)
avail memory = 55197696 (52 MB)

> ./cpuid
 eax in    eax      ebx      ecx      edx
00000000 00000001 756e6547 6c65746e 49656e69
00000001 00000525 00000000 00000000 000001bf

Vendor ID: "GenuineIntel"; CPUID level 1

Intel-specific functions:
Version 00000525:
Type 0 - Original OEM
Family 5 - Pentium
Model 2 - 75-200
Stepping 5
Reserved 0


Feature flags: 000001bf:
FPU    Floating Point Unit
VME    Virtual 8086 Mode Enhancements
DE     Debugging Extensions
PSE    Page Size Extensions
TSC    Time Stamp Counter
MSR    Model Specific Registers
MCE    Machine Check Exception
CX8    COMPXCHG8B Instruction

> 


 * NEC PC-9821As2 (DX4ODP, pc98)

FreeBSD 4.7-RELEASE #7: Sun Nov 23 12:55:49 JST 2003
    nabe_at_aries.zodiac.org:/usr/src/sys/compile/DISKLESS_gemini
Timecounter "i8254"  frequency 2457600 Hz
CPU: i486 DX4 (486-class CPU)
  Origin = "GenuineIntel"  Id = 0x480  Stepping = 0
  Features=0x3<FPU,VME>
real memory  = 44040192 (43008K bytes)
avail memory = 38625280 (37720K bytes)

gemini:~/cpuid/work/cpuid-3.3 {8} ./cpuid
 eax in    eax      ebx      ecx      edx
00000000 00000001 756e6547 6c65746e 49656e69
00000001 00000480 00000000 00000000 00000003

Vendor ID: "GenuineIntel"; CPUID level 1

Intel-specific functions:
Version 00000480:
Type 0 - Original OEM
Family 4 - i486
Model 8 - DX4
Stepping 0
Reserved 0


Feature flags: 00000003:
FPU    Floating Point Unit
VME    Virtual 8086 Mode Enhancements

gemini:~/cpuid/work/cpuid-3.3 {9}

---
Watanabe Kazuhiro (CQG00620_at_nifty.ne.jp)