Module Name: src Committed By: riastradh Date: Fri Aug 12 13:24:37 UTC 2022
Modified Files: src/share/man/man9: bus_space.9 Log Message: bus_space(9): Update barrier semantics to match reality and sense. As proposed on tech-kern: https://mail-index.netbsd.org/tech-kern/2022/07/16/msg028249.html tl;dr: - bus_space_barrier is needed only with prefetchable/cacheable. - BUS_SPACE_BARRIER_READ is like membar_acquire. - BUS_SPACE_BARRIER_WRITE is like membar_release. - READ|WRITE is like membar_sync. To generate a diff of this commit: cvs rdiff -u -r1.53 -r1.54 src/share/man/man9/bus_space.9 Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.