This may be the "ACPI core", dedicated to running the ACPI interpreter.
:-)
> -----Original Message-----
> From: [email protected] [mailto:linux-acpi-
> [email protected]] On Behalf Of Dave Jones
> Sent: Wednesday, March 01, 2006 2:47 PM
> To: [email protected]
> Cc: [email protected]
> Subject: 2.6.16rc5 'found' an extra CPU.
>
> This amused me.
>
> (17:43:34:davej@nemesis:~)$ ll /proc/acpi/processor/
> total 0
> dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU1/
> dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU2/
> dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU3/
> (17:43:36:davej@nemesis:~)$
>
> As cool as a 3-way x86-64 sounds, it's really only got 2.
>
> Two of these..
>
> vendor_id : AuthenticAMD
> cpu family : 15
> model : 5
> model name : AMD Opteron(tm) Processor 244
> stepping : 8
> cpu MHz : 1789.412
> cache size : 1024 KB
> 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 lm 3dnowext
> 3dnow
> bogomips : 3578.59
> TLB size : 1024 4K pages
> clflush size : 64
> cache_alignment : 64
> address sizes : 40 bits physical, 48 bits virtual
> power management: ts ttp
>
>
> (17:45:21:davej@nemesis:~)$ cat /proc/acpi/processor/CPU*/info
> processor id: 0
> acpi id: 1
> bus mastering control: no
> power management: no
> throttling control: yes
> limit interface: yes
> processor id: 1
> acpi id: 2
> bus mastering control: no
> power management: no
> throttling control: no
> limit interface: no
> processor id: 255
> acpi id: 3
> bus mastering control: no
> power management: no
> throttling control: no
> limit interface: no
>
> I guess the '255' has confused something.
>
> This made my 'bug of the day' :)
>
> Dave
>
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