commit 59878316de1fa796e54feb16f91bf83b87629bea
Author: Sepherosa Ziehau <[email protected]>
Date: Mon Jun 1 22:19:07 2015 +0800
cputimer/tsc: Prevent rdtsc reordering
Use lfence on Intel and mfence on AMD to make sure that all instructions
before rdtsc are completed. This should prevent time warps, if TSC is
selected as cputimer.
Summary of changes:
sys/platform/pc64/isa/clock.c | 28 ++++++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/59878316de1fa796e54feb16f91bf83b87629bea
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DragonFly BSD source repository
