On Thu, 2017-03-09 at 18:43 +0100, Thomas Gleixner wrote: > Ok, so it's random. Now it would be interesting what the rest of the system > does when this happens. I still have no idea why that IOAT setting has any > influence.
Hello Thomas, The cpuhp_issue_call() hang happens during boot and before I get the chance to log in with ssh. Can you be more specific about what information you are looking for? Anyway, the result of a new bisect I ran is as follows: * good: 631ddaba5905 ("Merge branches 'pm-sleep' and 'powercap'"). * good: 80f1b3dea9d4 ("Merge branch 'device-properties'"). * bad: a67485d4bf97 ("Merge tag 'acpi-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm"). Does this make sense to you? Thanks, Bart.