hg: jdk9/hs-rt/hotspot: 8067331: Zero: Atomic::xchg and Atomic::xchg_ptr need full memory barrier

[david.holmes at oracle.com]

Changeset: 26f3414c5194
Author:    sgehwolf
Date:      2015-01-07 16:43 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/26f3414c5194

8067331: Zero: Atomic::xchg and Atomic::xchg_ptr need full memory barrier
Reviewed-by: dholmes, coleenp

! src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
! src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp