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x86: do not enable TSC notifier if we don't need it
authorLinus Torvalds <torvalds@linux-foundation.org>
Sun, 24 Aug 2008 18:52:06 +0000 (11:52 -0700)
committerH. Peter Anvin <hpa@zytor.com>
Mon, 25 Aug 2008 00:16:28 +0000 (17:16 -0700)
Impact: crash on non-TSC-equipped CPUs

Don't enable the TSC notifier if we *either*:

1. don't have a CPU, or
2. have a CPU with constant TSC.

In either of those cases, the notifier is either damaging (1) or useless(2).

From: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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