You have been subscribed to a public bug: -- Problem Description -- The current VPHN code assumes the NUMA toplogy updates data are big endian. They are native endian actually since the hypervisor pass them through registers. This has a great performance impact on little endian guests.
A fix has been sent to fix the issue: http://patchwork.ozlabs.org/patch/396171/ Please pick the following commit from Michael Ellermans's tree: http://git.kernel.org/cgit/linux/kernel/git/mpe/linux.git/commit/?id=5c9fb1899400096c6818181c525897a31d57e488 which reads: "powerpc/vphn: NUMA node code expects big-endian" Now upstream: commit 5c9fb1899400096c6818181c525897a31d57e488 Author: Greg Kurz <gk...@linux.vnet.ibm.com> Date: Wed Oct 15 12:42:58 2014 +0200 powerpc/vphn: NUMA node code expects big-endian ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: architecture-ppc64le bugnameltc-117090 severity-high targetmilestone-inin1404 -- Endianness issue in the VPHN topology update code https://bugs.launchpad.net/bugs/1401150 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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
