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Commit b6c41cb0 authored by Nitin Gupta's avatar Nitin Gupta Committed by David S. Miller
Browse files

sparc64: Fix mapping of 64k pages with MAP_FIXED 



An incorrect huge page alignment check caused
mmap failure for 64K pages when MAP_FIXED is used
with address not aligned to HPAGE_SIZE.

Orabug: 25885991

Fixes: dcd1912d ("sparc64: Add 64K page size support")
Signed-off-by: default avatarNitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b23afd38

arch/sparc/include/asm/hugetlb.h

+4 −2
Original line number Diff line number Diff line
@@ -24,9 +24,11 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, 
static inline int prepare_hugepage_range(struct file *file,

			unsigned long addr, unsigned long len)

{

	if (len & ~HPAGE_MASK)

	struct hstate *h = hstate_file(file);



	if (len & ~huge_page_mask(h))

		return -EINVAL;

	if (addr & ~HPAGE_MASK)

	if (addr & ~huge_page_mask(h))

		return -EINVAL;

	return 0;

}