CVS commit: src/sys/arch/aarch64/aarch64

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Thu Oct 15 21:14:15 UTC 2020

Modified Files:
        src/sys/arch/aarch64/aarch64: bus_space.c

Log Message:
Reduce scope of memory barriers use in bus_space_barrier() implementation.

Instead of always "dsb sy", use "dsb ishld" for reads, "dsb ishst" for
writes, and "dsh ish" for reads and writes.

Ok skrll@


To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/aarch64/aarch64/bus_space.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.