Remove I-sync stuff from pmap_changebit(). The AARM says that we
authormiod <miod@openbsd.org>
Mon, 6 Jan 2014 20:21:32 +0000 (20:21 +0000)
committermiod <miod@openbsd.org>
Mon, 6 Jan 2014 20:21:32 +0000 (20:21 +0000)
commitcaf5976e70231e43d4268463049fbf424324b6a0
tree7d5122a534c81e978f1f4bb3b1134f8cfdbe2ab1
parent74ad8271b1178aec727ccd17deb1fa870dbf601e
Remove I-sync stuff from pmap_changebit().  The AARM says that we
only have to sync the I-stream when the mapping is removed or changed,
and since the I-stream is fetch-only, changing protection bits does
not constitute changing the mapping (the VA->PA translation is still
the same).

From NetBSD
sys/arch/alpha/alpha/pmap.c