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SubjectRe: All kernels after 2.6.32-git10 show only 1 CPU ** NOT Fixed in 2.6.33-rc2 either **
On Mon, 28 Dec 2009, Sid Boyce wrote:

> This dmesg is from a freshly built 2.6.32. The following do not appear
> in later 2.6.32-git or 2.6.33-rc kernels.
> # grep LAPIC /DMESG_2.6.32_tindog
> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
> ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1]

Right, your local apic is not found, ie this is missing
in the 2.6.33 dmesg:

ACPI: Local APIC address 0xfee00000
Strange, as CONFIG_X86_LOCAL_APIC=y

-Len
Len Brown, Intel Open Source Technology Center




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