Note, on x86_64 for 4.12.9 a new kernel option,
HARDLOCKUP_CHECK_TIMESTAMP was added which defaults to enabled. It enables
a low pass filter to compensate for perf based hard lockup detection.
Added this option to the x86_64 4.12.x kernel confog file.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This is a recommended security measure to protect the low portion
of virtual memory. On x86_64 the recommended value is 65536 while
for arm it shouldn't be higher than 32768.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
The resulting kernel boots fine on qemu and on Cavium Thunder,
though the latter still has some issues.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
