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Commit 9df1dab1 authored by David S. Miller's avatar David S. Miller Committed by David S. Miller
Browse files

[SPARC64]: Align address in huge_pte_alloc(). 



We are about to fill in all HPAGE_SIZE's worth
of PAGE_SIZE ptes, so we have to give the first
pte in that set else we scribble over random memory
when we fill in the ptes.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 73c50a27

arch/sparc64/mm/hugetlbpage.c

+7 −0
Original line number Diff line number Diff line
@@ -198,6 +198,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) 
	pmd_t *pmd;

	pte_t *pte = NULL;



	/* We must align the address, because our caller will run

	 * set_huge_pte_at() on whatever we return, which writes out

	 * all of the sub-ptes for the hugepage range.  So we have

	 * to give it the first such sub-pte.

	 */

	addr &= HPAGE_MASK;



	pgd = pgd_offset(mm, addr);

	pud = pud_alloc(mm, pgd, addr);

	if (pud) {