Re: 2.6.35-rc* regression: ERROR: Unable to locate IOAPIC for GSI *

[Yinghai Lu]

On Thu, Jul 8, 2010 at 6:53 AM, Meelis Roos <mroos@xxxxxxxx> wrote:
> Just tried 2.6.35-rc4-00086-g2aa72f6 on Celeron 900 + i815 chipset PC.
> I get these errors during bootup, and all interrupts become XT-PIC:
>
> [    0.087302] pnp: PnP ACPI init
> [    0.087482] ACPI: bus type pnp registered
> [    0.087999] ERROR: Unable to locate IOAPIC for GSI 8
> [    0.087999] ERROR: Unable to locate IOAPIC for GSI 13
> [    0.087999] ERROR: Unable to locate IOAPIC for GSI 12
> [    0.088091] ERROR: Unable to locate IOAPIC for GSI 1
> [    0.089013] ERROR: Unable to locate IOAPIC for GSI 6
> [    0.090612] ERROR: Unable to locate IOAPIC for GSI 4
> [    0.092235] ERROR: Unable to locate IOAPIC for GSI 3
> [    0.094382] ERROR: Unable to locate IOAPIC for GSI 7
> [    0.097470] pnp: PnP ACPI: found 13 devices
> [    0.097625] ACPI: ACPI bus type pnp unregistered
>
> 2.6.35-rc2-00001-g386f40c behaves the same.
>
> 2.6.34 worked fine, it reports just
> [    0.104513] pnp: PnP ACPI init
> [    0.104683] ACPI: bus type pnp registered
> [    0.116002] pnp: PnP ACPI: found 13 devices
> [    0.116158] ACPI: ACPI bus type pnp unregistered

Do you have bootlog for 2.6.34 with "debug apic=debug"?

>
> Will bisect but it takes some time.
>
> Full dmesg:
> [    0.000000] ACPI: RSDP 000ff980 00014 (v00 AMI   )
> [    0.000000] ACPI: RSDT 1fff0000 0002C (v01 D815EA D815EEA2 20021106 MSFT 00001011)
> [    0.000000] ACPI: FACP 1fff1000 00074 (v01 D815EA EA81510A 20021106 MSFT 00001011)
> [    0.000000] ACPI: DSDT 1ffe0000 030E4 (v01 D815E2 EA81520A 00000023 MSFT 0100000B)
> [    0.000000] ACPI: FACS 1fff8000 00040
> [    0.000000] ACPI: SSDT 1ffe30e4 00035 (v01 D815EA EA81510A 00000015 MSFT 0100000B)

no MADT

> [    0.000000] ACPI: PM-Timer IO Port: 0x408
> [    0.000000] Found and enabled local APIC!
> [    0.000000] nr_irqs_gsi: 16

> [    0.021087] Enabling APIC mode:  Flat.  Using 0 I/O APICs
no io apic.

YH
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