From: Andi Kleen <ak@suse.de>
Date: Fri, 10 Aug 2007 20:31:07 +0000 (+0200)
Subject: i386: Use global flag to disable broken local apic timer on AMD CPUs.
X-Git-Tag: v2.6.23-rc3~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d3f7eae182b04997be19343a23f7009170f4f7a5;p=pandora-kernel.git

i386: Use global flag to disable broken local apic timer on AMD CPUs.

The Averatec 2370 and some other Turion laptop BIOS seems to program the
ENABLE_C1E MSR inconsistently between cores. This confuses the lapic
use heuristics because when C1E is enabled anywhere it seems to affect
the complete chip.

Use a global flag instead of a per cpu flag to handle this.
If any CPU has C1E enabled disabled lapic use.

Thanks to Cal Peake for debugging.

Cc: tglx@linutronix.de
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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