Scott Wood <o...@buserror.net> writes:
> Commit f4ea6dcb08ea ("powerpc/mm: Enable mappings above 128TB") increased
> the task size on book3s, and introduced a mechanism to dynamically
> control whether a task uses these larger addresses. While the change to
> the task size itself was ifdef-protected to only apply on book3s, the
> change to STACK_TOP_USER64 was not. On book3e, this had the effect of
> trying to use addresses up to 128TiB for the stack despite a 64TiB task
> size limit -- which broke 64-bit userspace producing the following errors:
>
> Starting init: /sbin/init exists but couldn't execute it (error -14)
> Starting init: /bin/sh exists but couldn't execute it (error -14)
> Kernel panic - not syncing: No working init found. Try passing init= option
> to kernel. See Linux Documentation/admin-guide/init.rst for guidance.
For some reason I am not seeing this on my p5020ds?
I just checked, it's definitely booting:
[ 0.000000] Linux version 4.11.0-gcc5-g13e0988 (kerkins@alpine1-p1) (gcc
version 5.2.1 20151001 (GCC) ) #1 SMP Mon May 8 05:33:22 AEST 2017
[ 0.000000] Using CoreNet Generic machine description
...
[ 3.216940] systemd[1]: Detected architecture ppc64.
...
Debian GNU/Linux stretch/sid p5020ds ttyS0
p5020ds login:
Anyway patch looks good, I'll pull it in with the rest of your tree.
cheers
