On Sat, Jan 25, 2014 at 08:41:07AM +0100, Ingo Molnar wrote: > > * Dave Jones <da...@redhat.com> 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
It's not possible though. It's an i5-4670T, in a single socket board. It doesn't even have hyperthreading. http://ark.intel.com/products/75050/Intel-Core-i5-4670T-Processor-6M-Cache-up-to-3_30-GHz Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
