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Subjectkernel config for AMD Athlon 64 X2 4200+ Manchester
Hi all,

I am running kernel 2.6.23.12 and compiled with SMP on.
Unfortunately the kernel doesn't recognize my dual core processor:

$ dmesg | grep -i cpu
CPU has 2 num_cores
Processor #0 (Bootup-CPU)
SMP: Allowing 1 CPUs, 0 hotplug CPUs
PERCPU: Allocating 34344 bytes of per cpu data
Initializing CPU#0
CPU 0: aperture @ 610000000 size 32 MB
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU 0/0 -> Node 0
Brought up 1 CPUs

$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Hammer Family processor - Model Unknown
stepping : 1
cpu MHz : 2211.347
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm
3dnowext 3dnow up rep_good pni lahf_lm
bogomips : 4425.39
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp


Any ideas how I can configure the kernel to fix that?

Thanks for any help,
-- Bernd Prager




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