Messages in this thread | | | Date | Thu, 26 Oct 2006 23:11:49 -0700 | From | Om Narasimhan <> | Subject | Re: HPET : Legacy Routing Replacement Enable - 3rd try. |
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Andi Kleen wrote: >> 1. HW is LRR capable, HPET ACPI it is 1, timer interrupt is on INT2. >> Before the fix: Linux cannot get timer interrupts on INT0, goes for ACPI >> timer. > > What ACPI timer? I don't think we have any fallback for int 0. Sorry, Mea Culpa, I should have written APIC timer. > > Not sure what you mean with INT2. Pin2 on ioapic 0 perhaps? Yes. PIN2 on IOAPIC #0. > >> After the fix : Works fine. This is according to hpet spec. > > On what exact motherboard was that? SunFire X4600 > >> To handle case 3, I removed all references to acpi_hpet_lrr, explained >> this case in the code and decided to solely rely on the command line >> parameter for LRR capability. Rational for this approach is , > > This means the systems which you said fixes this would need the command > line parameter to work? I feel I do not make things clear enough. The command line parameter can be avoided entirely if majority of the BIOSes implement LRR routing correctly. I would rewrite the patch to avoid cmdline parameter and according to Andrew Morton's suggestions.
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