** Changed in: ubuntu-power-systems
Status: Fix Released => Fix Committed
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https://bugs.launchpad.net/bugs/1700521
Title:
powerpc: Invalidate ERAT on powersave wakeup for POWER9
Status in The Ubuntu-power-systems project:
Fix Committed
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Zesty:
Fix Committed
Bug description:
== Comment: #0 - Breno Leitao <[email protected]> - 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/
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