##############################################################################
# # Enable lock elision support for these architectures
#
# At the moment lock elision is disabled on x86_64 until there's a CPU that
# would actually benefit from enabling it.  Intel released a microcode update
# to disable HLE and RTM at boot and the Fedora kernel now applies it early
# enough that keeping lock elision enabled should be harmless, but we have
# disabled it anyway as a conservative measure.
#
# We have not yet tested enabling ppc64 or ppc64le lock elision.
#
# We have disabled elision on s390/s390 because of bug 1499260.
#
##############################################################################

from when is that comment?

we have now Broadwell/Skylarke SP  and so there is a CPU that would benefit