Wierd /proc/cpuinfo with 2.4.11-pre4

Dan Merillat
2001-10-05T18:16:32Z

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>From dmesg:
CPU: Before vendor init, caps: 000001bf 00000000 00000000, vendor = 0
Intel Pentium with F0 0F bug - workaround enabled.
Intel old style machine check architecture supported.
Intel old style machine check reporting enabled on CPU#0.
CPU: After vendor init, caps: 000001bf 00000000 00000000 00000000
CPU: After generic, caps: 000001bf 00000000 00000000 00000000
CPU: Common caps: 000001bf 00000000 00000000 00000000
CPU: Intel Pentium 75 - 200 stepping 0b
Checking 'hlt' instruction... OK.

Looks normal. Let's see /proc/cpuinfo...

processor : 0
vendor_id : GenuineIntel
cpu family : 5
model : 2
model name : Pentium 75 - 200
stepping : 11
cpu MHz : 132.634
fdiv_bug : no
hlt_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8
bogomips : 264.60

processor : 1
vendor_id : unknown
cpu family : 0
model : 0
model name : unknown
stepping : 16
cpu MHz : 132.634
fdiv_bug : no
hlt_bug : no
f00f_bug : yes
coma_bug : yes
fpu : yes
fpu_exception : yes
cpuid level : 0
wp : yes
flags : fpu vme de pse tsc 3dnow lrti
bogomips : 0.02

processor : 2
vendor_id : œÚ0À\bÏ0À
cpu family : 156
model : 48
model name : ð
stepping : 192
cpu MHz : 132.634
cache size : 0 KB
fdiv_bug : yes
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 0
wp : yes
flags : fpu de tsc msr pae mce apic pge cmov pat clflush dts ia64 recovery longrun lrti
bogomips : 644790.84

processor : 3
vendor_id : L£)À
cpu family : 86
model : 41
model name : ¸Ú0À¸Ï0À
stepping : 192
cache size : 0 KB
fdiv_bug : no
hlt_bug : yes
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1048575
wp : no
flags : syscall 3dnowext 3dnow
bogomips : 0.00

processor : 4
vendor_id : …¯)À¯)À}¯)Ày¯)Àu¯)Àp¯)À
cpu family : 0
model : 0
model name : u¯)Àp¯)À
stepping : 0
cpu MHz : 132.634
fdiv_bug : yes
hlt_bug : yes
f00f_bug : yes
coma_bug : yes
fpu : no
fpu_exception : no
cpuid level : 1
wp : no
flags : fpu tsc msr pae mce apic pge cmov pat clflush dts ia64 syscall 3dnowext 3dnow recovery lrti cxmmx centaur_mcr
bogomips : 0.00

processor : 5
vendor_id : unknown
cpu family : 0
model : 0
model name : unknown
stepping : 0
fdiv_bug : yes
hlt_bug : yes
f00f_bug : no
coma_bug : yes
fpu : no
fpu_exception : no
cpuid level : 0
wp : no
flags : cxmmx k6_mtrr cyrix_arr
bogomips : 0.00

processor : 6
vendor_id : unknown
cpu family : 0
model : 0
model name : unknown
stepping : 0
cache size : 0 KB
fdiv_bug : no
hlt_bug : yes
f00f_bug : no
coma_bug : no
fpu : no
fpu_exception : no
cpuid level : 0
wp : no
flags :
bogomips : 0.00

processor : 7
vendor_id : unknown
cpu family : 0
model : 0
model name : unknown
stepping : 0
cache size : 515 KB
fdiv_bug : no
hlt_bug : yes
f00f_bug : yes
coma_bug : yes
fpu : no
fpu_exception : no
cpuid level : 0
wp : no
flags :
bogomips : 644464.70

Wow! That's pretty impressive, a new kernel build gives me an
additional _7_ CPUs!

Interesting bits of .config:

CONFIG_M586TSC=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_SMP is not set
# CONFIG_X86_UP_APIC is not set
# CONFIG_X86_UP_IOAPIC is not set

Won't compile with UP APIC turned on, as others have noted.

Aside from /bin/ps getting confused about the system capabilities, it
seems stable.

--Dan