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    SubjectRe: [patch 3/3] x86: io-apic - code style cleaning for setup_IO_APIC_irqs
    On Mon, Sep 8, 2008 at 9:07 AM, Yinghai Lu <yhlu.kernel@gmail.com> wrote:
    > On Sun, Sep 7, 2008 at 9:38 PM, Yinghai Lu <yhlu.kernel@gmail.com> wrote:
    >> On Sun, Sep 7, 2008 at 9:20 PM, Cyrill Gorcunov <gorcunov@gmail.com> wrote:
    >>> On Mon, Sep 8, 2008 at 4:24 AM, Yinghai Lu <yhlu.kernel@gmail.com> wrote:
    >>>> On Sat, Sep 6, 2008 at 6:12 AM, Ingo Molnar <mingo@elte.hu> wrote:
    >>>>>
    >>>>> * Cyrill Gorcunov <gorcunov@gmail.com> wrote:
    >>>>>
    >>>>>> By changing printout form we are able to shrink code a bit.
    >>>>>>
    >>>>>> Former printout example:
    >>>>>>
    >>>>>> init IO_APIC IRQs
    >>>>>> IO-APIC (apicid-pin) 1-1, 1-2, 1-3 not connected.
    >>>>>> IO-APIC (apicid-pin) 2-1, 2-2, 2-3 not connected.
    >>>>>>
    >>>>>> New printout example:
    >>>>>>
    >>>>>> init IO_APIC IRQs
    >>>>>> 1-1 1-2 1-3 (apicid-pin) not connected
    >>>>>> 2-1 2-2 2-3 (apicid-pin) not connected
    >>>>>
    >>>>> applied to tip/irq/sparseirq - thanks Cyrill.
    >>>>
    >>>> got
    >>>> 0-16<7> 0-17<7> 0-18<7> 0-19<7> 0-20<7> 0-21<7> 0-22<7> 0-23<7>
    >>>> (apicid-pin) not connected
    >>>> 1-0<7> 1-1<7> 1-2<7> 1-3<7> 1-4<7> 1-5<7> 1-6<7> 1-7<7> 1-8<7> 1-9<7>
    >>>> 1-10<7> 1-11<7> 1-12<7> 1-13<7> 1-14<7> 1-15<7> 1-16<7> 1-17<7>
    >>>> 1-18<7> 1-19<7> 1-20<7> 1-21<7> 1-22<7> 1-23<7> (apicid-pin) not
    >>>> connected
    >>>>
    >>>> can you remove the extra <7>?
    >>>>
    >>>> YH
    >>>>
    >>>
    >>> Btw Yinghai, do you really have a machine with that many unconnected pins?
    >>
    >> Yes
    >>
    >> recent change in sparseirq, we only init irq [0,16) at that point. so
    >> pins on other io apic controller all unconnected...
    >>
    > correction: sparseirq does not change the behavoir...
    >
    > ENABLING IO-APIC IRQs
    > init IO_APIC IRQs
    > IO-APIC (apicid-pin) 0-0 not connected.
    > IOAPIC[0]: Set routing entry (0-1 -> 0x31 -> IRQ 1 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-3 -> 0x33 -> IRQ 3 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-4 -> 0x34 -> IRQ 4 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-5 -> 0x35 -> IRQ 5 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-6 -> 0x36 -> IRQ 6 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-7 -> 0x37 -> IRQ 7 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-9 -> 0x39 -> IRQ 9 Mode:1 Active:0)
    > IOAPIC[0]: Set routing entry (0-10 -> 0x3a -> IRQ 10 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-11 -> 0x3b -> IRQ 11 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-12 -> 0x3c -> IRQ 12 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-13 -> 0x3d -> IRQ 13 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-14 -> 0x3e -> IRQ 14 Mode:0 Active:0)
    > IOAPIC[0]: Set routing entry (0-15 -> 0x3f -> IRQ 15 Mode:0 Active:0)
    > IO-APIC (apicid-pin) 0-16, 0-17, 0-18, 0-19, 0-20, 0-21, 0-22, 0-23,
    > 1-0, 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 2-0, 2-1, 2-2, 2-3, 2-4, 2-5, 2-6,
    > 3-0, 3-1, 3-2, 3-3, 3-4, 3-5, 3-6, 3-7, 3-8, 3-9, 3-10, 3-11, 3-12,
    > 3-13, 3-14, 3-15, 3-16, 3-17, 3-18, 3-19, 3-20, 3-21, 3-22, 3-23 not
    > connected.
    >
    > there is some difference between using acpi or mptable...
    >
    > when mpatble is used, mp_irqs is all filled after mptable is parsed.
    >
    > when acpi is used, one [0-15) is filled..., later it will fill entries
    > when acpi add entries...mp_register_gsi/mp_config_acpi_gsi
    >
    > YH
    >

    thanks for explanation Yinghai, i was reffering to MP and didn't take
    a look on ACPI facility (that is why I've asked you). Thanks!


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