On Thu, 28 Dec 2017, Alexandru Chirvasitu wrote: > Actually, it decided to cooperate for just long enough for me to get > the dmesg out. Attached. > > This is from the kernel you asked about: Dou's patch + yours, i.e. the > latest one in that git log I just sent, booted up with 'apic=debug'. Ok. As I suspected that warning does not trigger. I would have been massively surprised if that happened. So Dou's patch is just a red herring and just might change the timing enough to make the problem 'hide'. Can you try something completely different please? Just use plain Linus tree without any additional patches on top and disable CONFIG_NO_HZ_IDLE, i.e. select CONFIG_HZ_PERIODIC. If that works, then reenable it and add 'nohz=off' to the kernel command line. Thanks, tglx
