Thread (139 messages) 139 messages, 9 authors, 2016-11-24
STALE3493d

[PATCH V2 58/68] powerpc/mm: Fix vma_mmu_pagesize for radix

From: Aneesh Kumar K.V <hidden>
Date: 2016-04-09 06:17:04
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

Radix don't use SLICE framework to find page size. Hence use
vma to find the page size.

Signed-off-by: Aneesh Kumar K.V <redacted>
---
 arch/powerpc/mm/hugetlbpage.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 7201e9c624d5..9eab82cfbb91 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -719,14 +719,14 @@ unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
 {
 #ifdef CONFIG_PPC_MM_SLICES
 	unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start);
-
-	return 1UL << mmu_psize_to_shift(psize);
-#else
+	/* With radix we don't use slice, so derive it from vma*/
+	if (!radix_enabled())
+		return 1UL << mmu_psize_to_shift(psize);
+#endif
 	if (!is_vm_hugetlb_page(vma))
 		return PAGE_SIZE;
 
 	return huge_page_size(hstate_vma(vma));
-#endif
 }
 
 static inline bool is_power_of_4(unsigned long x)
-- 
2.5.0
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