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Scott Wood authored
lbarx/stbcx. are implemented on e6500, but not on e5500. Likewise, SMT is on e6500, but not on e5500. So, avoid executing an unimplemented instruction by only locking when needed (i.e. in the presence of SMT). Signed-off-by:
Scott Wood <oss@buserror.net>
37c5e942