Apparently big endian glibc builds just work, if we let the endian
header allow that (which prev was #error).
So this patch bumps glibc to version which fixes the header (this
hopefully will become arc-2019.09-release) and then enables arceb
in glibc toolchain builds
Signed-off-by: Vineet Gupta
walk_page_range() is going to be allowed to walk page tables other than
those of user space. For this it needs to know when it has reached a
'leaf' entry in the page tables. This information will be provided by the
p?d_leaf() functions/macros.
For arc, we only have two levels, so only pmd_leaf()
