Chris Metcalf b287f69676 arch/tile: avoid false corrupt frame warning in early boot ...

With lockstat we can end up trying to get a backtrace before
"high_memory" is initialized, so don't worry about range testing
if it is zero.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

2012-04-02 12:12:38 -04:00

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