Continuation of the PPCBUG-107 cascade sweep (batch 1: word stores landed
in 4538fa9). Plain stb/stbu/stbx/stbux, sth/sthu/sthx/sthux/sthbrx, and
std/stdu/stdx/stdux/stdbrx now invalidate the reservation table before
writing, so cross-thread lwarx/stwcx. atomicity holds when these widths
are written by another host thread.
Affected:
PPCBUG-130 9 byte/halfword stores missing invalidate_for_write
stb, stbu, stbx, stbux, sth, sthu, sthx, sthux, sthbrx
PPCBUG-150 5 doubleword stores missing invalidate_for_write
std, stdu, stdx, stdux, stdbrx
Tests: lwarx_then_plain_stb_invalidates_reservation,
lwarx_then_plain_std_invalidates_reservation
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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