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

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Message-ID: <1290536827.2072.417.camel@laptop>
Date:	Tue, 23 Nov 2010 19:27:07 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	sedat.dilek@...il.com
Cc:	Don Zickus <dzickus@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86, perf, nmi: Disable perf if counters are not
 accessable

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?
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