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commit 81747ac6d3e846d1955edaa94dee9065e541b7d8
Author: Justus Winter <[email protected]>
Date: Mon Sep 7 13:04:39 2015 +0200
kern: use proper memory fences when handling the mapped time
* include/mach/time_value.h (struct mapped_time_value): Adjust comment.
* kern/mach_clock.c (mtime): Likewise. Also make it volatile.
(update_mapped_time): Use full hardware barriers.
(read_mapped_time): New macro with proper fences.
(record_time_stamp, host_get_time): Use the new macro.
-----------------------------------------------------------------------
Summary of changes:
include/mach/time_value.h | 2 ++
kern/mach_clock.c | 33 ++++++++++++++++++---------------
2 files changed, 20 insertions(+), 15 deletions(-)
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