* Dave Jones <[email protected]> wrote:
> I have a system with 4 cores (configured with CONFIG_NR_CPUS=4) that shows
> during boot..
>
> [ 0.000000] smpboot: 8 Processors exceeds NR_CPUS limit of 4
>
> it looks like this is because..
>
> [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x05] lapic_id[0xff] disabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x06] lapic_id[0xff] disabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x07] lapic_id[0xff] disabled)
> [ 0.000000] ACPI: LAPIC (acpi_id[0x08] lapic_id[0xff] disabled)
>
> Should the CPU counting code be ignoring those disabled APICs ?
Hm, so to the kernel it looks like as if those were 'possible CPUs',
in theory hotpluggable. Not sure what they are - disabled cores in an
8-core system? Or BIOS reporting crap?
But perhaps the boot message could be improved to say something like:
> [ 0.000000] smpboot: 8 possible processors exceeds NR_CPUS limit of 4
?
Thanks,
Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
