6314417 ASSERT failure on Panther during memory/cpu stress test

[ryan.sc...@sun.com]

Author: rscott
Repository: /hg/onnv/onnv-gate
Revision: 62b93b722bf87e37f0366e06956dcbcbcefe10f9
Log message:
6314417 ASSERT failure on Panther during memory/cpu stress test

Files:
        update: usr/src/uts/sun4u/cpu/us3_common.c