The first two commits listed in the bug description are indeed already in Zesty via bug 1681429.
I built a test kernel with the third of the requested patches in the description(Commit a5998fcb92). This test kernel also has the three additional patches requested in comment #3. The first and third patches mentioned comment #3(5ce5fe14ed and 424de9c6e3) picked cleanly from linux-next. However, commit a46cc7a90f needed a minor backport. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1709220/ Can you test this kernel and see if it resolves this bug? Thanks in advance! ** Also affects: linux (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: linux (Ubuntu Zesty) Status: New => In Progress ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu Zesty) Importance: Undecided => High ** Changed in: linux (Ubuntu Zesty) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => Joseph Salisbury (jsalisbury) -- 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/1709220 Title: RPT related fixes missing in Ubuntu 16.04.3 Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress Bug description: ---Problem Description--- The following patches are missing in the ubuntu 16.04.3 kernel https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156104.html https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156105.html https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/157130.html ---uname output--- 4.10.0-29-generic #33~16.04.1-Ubuntu SMP Tue Jul 25 18:17:06 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux Machine Type = power9 ---Steps to Reproduce--- Did a fork and exec benchmark to look at the performance and they pointed to radix routines. Upstream commits mentioned: commit f7327e0ba3805470cced2acfa053e795362ee41d powerpc/mm/radix: Remove unnecessary ptesync commit f6b0df55cad252fedd60aa2ba75a0207d0006283 powerpc/mm/radix: Don't do page walk cache flush when doing full mm flush commit a5998fcb92552a18713b6aa5c146aa400e4d75ee powerpc/mm/radix: Optimise tlbiel flush all case To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1709220/+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
