Commit 4af22ded0ecf ("arc: fix memory initialization for systems
with two memory banks") fixed highmem, but for the PAE case it causes
bug messages:
BUG: Bad page state in process swapper pfn:8
page:(ptrval) refcount:0 mapcount:1 mapping: index:0x0 pfn:0x8
flags: 0x0()
raw:
32-bit PAGE_MASK can not be used as a mask for physical addresses
when PAE is enabled. PAGE_MASK_PHYS must be used for physical
addresses instead of PAGE_MASK.
Without this, init gets SIGSEGV if pte_modify was called:
potentially unexpected fatal signal 11.
Path: /bin/busybox
CPU: 0 PID: 1 Comm:
