Re: Cannot enable APIC with 2.6.2

[Mikael Pettersson]

Tetsuji Rai writes:
 > I enabled APIC in config file of kernel 2.6.2, however APIC is not enabled
 > on boot.   I'm sure APIC is enabled on my machine by BIOS, because I
 > confirmed it with WIndows XP.  What's wrong with my settings?   Or it's a
 > bug of kernel?.....I suspect my config should be wrong.....

"APIC" here means I/O-APIC. The local APIC is Ok according to the dmesg log.

 > # CONFIG_SMP is not set
 > # CONFIG_PREEMPT is not set
 > CONFIG_X86_UP_APIC=y
 > CONFIG_X86_UP_IOAPIC=y
 > CONFIG_X86_LOCAL_APIC=y

This part is fine.

 > CONFIG_MTRR=y

But here the .config ends, so we can't tell if ACPI is enabled or not.

 > -----dmesg-----

The kernel found no MP tables. The only chance left to enable the
I/O-APIC is for you to configure ACPI and pray it works on your machine.

(BTW, you're overclocking your P4 by about 8%.)
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