[2.6][5/5]Support for HPET based timer

PATCH Andi Kleen 3 participants 3 messages Aug 20, 2003 3 messages not in the archive

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Andi Kleen

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2003-08-20 00:31 UTC #3 lore raw

Quoted 2 lines · Jamie Lokier

Even on those machines where APIC interrupts are not usable? (E.g. due to interactions with the SMM BIOS).

On those you can always use the old style PIT.

-Andi

Jamie Lokier

2003-08-20 01:05 UTC #4 lore raw

Quoted 5 lines · Andi Kleen

Quoted 2 lines · Jamie Lokier
Even on those machines where APIC interrupts are not usable? (E.g. due to interactions with the SMM BIOS).
On those you can always use the old style PIT.

Let me put the question better. Is it worth using the new style HPET, on systems which cannot use APIC interrupts because of BIOS problems (e.g. IBM laptops)?

-- Jamie

Vojtech Pavlik

2003-08-20 08:15 UTC #5 lore raw

Quoted 10 lines · Jamie Lokier

Quoted 5 lines · Andi Kleen
Quoted 2 lines · Jamie Lokier
Even on those machines where APIC interrupts are not usable? (E.g. due to interactions with the SMM BIOS).
On those you can always use the old style PIT.
Let me put the question better. Is it worth using the new style HPET, on systems which cannot use APIC interrupts because of BIOS problems (e.g. IBM laptops)?

Those don't have a HPET. Easy.

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Vojtech Pavlik
SuSE Labs, SuSE CR