K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2017-07-27T08:37:07.904809Z
K 7
svn:log
V 294
Use MFENCE to serialize RDTSC on non-Intel CPUs.

Kernel already used the stronger barrier instruction for AMDs, correct
the userspace fast gettimeofday() implementation as well.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D11728

END