K 10
svn:author
V 3
alc
K 8
svn:date
V 27
2010-10-15T03:23:53.559107Z
K 7
svn:log
V 604
MFC r209789
  Correctly maintain the per-cpu field "curpmap" on amd64 just like we
  do on i386.  The consequences of not doing so on amd64 became apparent
  with the introduction of the COUNT_IPIS and COUNT_XINVLTLB_HITS
  options.  Specifically, single-threaded applications were generating
  unnecessary IPIs to shoot-down the TLB on other processors.

MFC r209887
  Reduce the number of global TLB shootdowns generated by pmap_qenter().
  Specifically, teach pmap_qenter() to recognize the case when it is being
  asked to replace a mapping with the very same mapping and not generate
  a shootdown.

END