[patch 22/31] Fix sparc64 hugepage bugs

[Greg KH]

-stable review patch.  If anyone has any objections, please let us know.

------------------

From: David Miller <davem@xxxxxxxxxxxxx>

[SPARC64]: Add missing HPAGE_MASK masks on address parameters.

These pte loops all assume the passed in address is HPAGE
aligned, make sure that is actually true.

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/sparc64/mm/hugetlbpage.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/sparc64/mm/hugetlbpage.c
+++ b/arch/sparc64/mm/hugetlbpage.c
@@ -248,6 +248,7 @@ void set_huge_pte_at(struct mm_struct *m
 	if (!pte_present(*ptep) && pte_present(entry))
 		mm->context.huge_pte_count++;
 
+	addr &= HPAGE_MASK;
 	for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
 		set_pte_at(mm, addr, ptep, entry);
 		ptep++;
@@ -266,6 +267,8 @@ pte_t huge_ptep_get_and_clear(struct mm_
 	if (pte_present(entry))
 		mm->context.huge_pte_count--;
 
+	addr &= HPAGE_MASK;
+
 	for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
 		pte_clear(mm, addr, ptep);
 		addr += PAGE_SIZE;

-- 
-
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