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-rw-r--r--arch/powerpc/include/asm/hugetlb.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 4fcbd6b14a3a..f2498c8e595d 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -7,6 +7,33 @@
extern struct kmem_cache *hugepte_cache;
+#ifdef CONFIG_PPC_BOOK3S_64
+/*
+ * This should work for other subarchs too. But right now we use the
+ * new format only for 64bit book3s
+ */
+static inline pte_t *hugepd_page(hugepd_t hpd)
+{
+ BUG_ON(!hugepd_ok(hpd));
+ /*
+ * We have only four bits to encode, MMU page size
+ */
+ BUILD_BUG_ON((MMU_PAGE_COUNT - 1) > 0xf);
+ return (pte_t *)(hpd.pd & ~HUGEPD_SHIFT_MASK);
+}
+
+static inline unsigned int hugepd_mmu_psize(hugepd_t hpd)
+{
+ return (hpd.pd & HUGEPD_SHIFT_MASK) >> 2;
+}
+
+static inline unsigned int hugepd_shift(hugepd_t hpd)
+{
+ return mmu_psize_to_shift(hugepd_mmu_psize(hpd));
+}
+
+#else
+
static inline pte_t *hugepd_page(hugepd_t hpd)
{
BUG_ON(!hugepd_ok(hpd));
@@ -18,6 +45,9 @@ static inline unsigned int hugepd_shift(hugepd_t hpd)
return hpd.pd & HUGEPD_SHIFT_MASK;
}
+#endif /* CONFIG_PPC_BOOK3S_64 */
+
+
static inline pte_t *hugepte_offset(hugepd_t *hpdp, unsigned long addr,
unsigned pdshift)
{