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SubjectRe: 2.4.5-ac6 and 2.4.4-ac11 boot fails with APIC timer

> The message on the screen
> calibrating APIC timer .....
> .... CPU clock speed is 1395.7390MHz
> ... host bus clock speed is 0.0000 MHz
> cpu: 0, clocks: 0, slic: 0
> Then nothing. I had to push the reset button at this point.
> ACPI and APM were disabled from the kernel config.
> This boot failure messages was obtained from
> Pentium4 board GB-450(?) from Intel, NVIDIA M64 video.
> Sound Blaster 128 PCI. Netgear PNIC fast ethernet....
> The same kernel was able to boot up the other Pentium 4 board from
> Gigabyte flawlessly. So, it depends on the motherboard manufacturers.
> Regards to all.
> G. Hugh Song

Replying to my own message:

When I chose "No" to "APIC support on uniprocessors", the above error
message disappeared and the machine booted up OK with 2.4.5-ac13.
Please refer to the following diff:

diff .config.old .config
< # CONFIG_X86_UP_IOAPIC is not set
> # CONFIG_X86_UP_APIC is not set

I think that APIC thing was defined by Intel themselves.
They should have implemented it the best. How much penalty do I pay
by not choosing "yes" to "APIC support on uniprocessors"?

Best regards,

G. Hugh Song
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