Public bug reported: == Comment: #0 - Breno Leitao <bren...@br.ibm.com> - 2017-06-23 13:13:02 == Hello,
This is a patch that we need to have on Zesty, including on the 16.04.3 installer. On POWER9 the ERAT may be incorrect on wakeup from some stop states that lose state. This causes random segvs and illegal instructions when these stop states are enabled. This patch invalidates the ERAT on wakeup on POWER9 to prevent this from causing a problem. URL: https://patchwork.ozlabs.org/patch/780365/ ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64 bugnameltc-155996 severity-medium targetmilestone-inin16043 ** Tags added: architecture-ppc64 bugnameltc-155996 severity-medium targetmilestone-inin16043 ** Changed in: ubuntu Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) ** Package changed: ubuntu => linux (Ubuntu) -- 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/1700521 Title: powerpc: Invalidate ERAT on powersave wakeup for POWER9 Status in linux package in Ubuntu: New Bug description: == Comment: #0 - Breno Leitao <bren...@br.ibm.com> - 2017-06-23 13:13:02 == Hello, This is a patch that we need to have on Zesty, including on the 16.04.3 installer. On POWER9 the ERAT may be incorrect on wakeup from some stop states that lose state. This causes random segvs and illegal instructions when these stop states are enabled. This patch invalidates the ERAT on wakeup on POWER9 to prevent this from causing a problem. URL: https://patchwork.ozlabs.org/patch/780365/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1700521/+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
