mm: add new arch_make_huge_pte() method for tile support
authorChris Metcalf <cmetcalf@tilera.com>
Sun, 1 Apr 2012 18:01:34 +0000 (14:01 -0400)
committerChris Metcalf <cmetcalf@tilera.com>
Fri, 25 May 2012 16:48:26 +0000 (12:48 -0400)
commitd9ed9faac283a3be73f0e11a2ef49ee55aece4db
tree49ec312cc1a066d23d602838d58a1723ec9331e8
parentfc0c49f5db640b9dfc7bb801892b5cbb7508a76a
mm: add new arch_make_huge_pte() method for tile support

The tile support for multiple-size huge pages requires tagging
the hugetlb PTE with a "super" bit for PTEs that are multiples of
the basic size of a pagetable span.  To set that bit properly
we need to tweak the PTe in make_huge_pte() based on the vma.

This change provides the API for a subsequent tile-specific
change to use.

Reviewed-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
include/linux/hugetlb.h
mm/hugetlb.c