hi Joseph, I tested on both versions and the kernel solves the problem:
== Xenial == # uname -a Linux 1604 4.4.0-116-generic #140~lp1744174 SMP Tue Mar 6 14:15:54 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux == Artful == # uname -a Linux 1710 4.13.0-36-generic #40~lp1744173 SMP Tue Mar 6 14:17:17 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux The patches can make the official tree in my opinion. PS: You look the kernel version, it has the extesion ~lpXXXXXX, one refers to lp1744173 and the other one to lp1744174, but I understand it was a typo, and both refers to the same fix (lp1744173), right? Thanks! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1744173 Title: artful: rfi-flush: Switch to new linear fallback flush Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Status in linux source package in Artful: Incomplete Bug description: Change flush from congruence-first with dependencies to linear with no dependencies, which increases flush performance by 8x on P8, and 3x on P9 (as measured with null syscall loop, which will have the flush area in the L2). The flush also becomes simpler and more adaptable to different cache geometries. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1744173/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
