Re: [PATCH] x86, perf, nmi: Disable perf if counters are not accessable

Peter Zijlstra
2010-11-23T18:26:50Z

On Tue, 2010-11-23 at 19:21 +0100, Sedat Dilek wrote:
> Due to BIOS l(ocal)apic is not possible:
>
> # dmesg | grep -i apic
> [ 0.000000] Using APIC driver default
> [ 0.000000] Local APIC disabled by BIOS -- you can enable it with "lapic"
> [ 0.000000] APIC: disable apic facility
> [ 0.000000] APIC: switched to apic NOOP
> [ 0.008891] no APIC, boot with the "lapic" boot parameter to force-enable it.
> [ 0.036141] Local APIC not detected. Using dummy APIC emulation.

Have you tried booting with "lapic" as the second last msg suggests you
do?