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-rw-r--r--arch/powerpc/include/asm/page.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index e34124f6fbf2..af7a3422a3ef 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -271,6 +271,13 @@ extern long long virt_phys_offset;
#else
#define PD_HUGE 0x80000000
#endif
+
+#else /* CONFIG_PPC_BOOK3S_64 */
+/*
+ * Book3S 64 stores real addresses in the hugepd entries to
+ * avoid overlaps with _PAGE_PRESENT and _PAGE_PTE.
+ */
+#define HUGEPD_ADDR_MASK (0x0ffffffffffffffful & ~HUGEPD_SHIFT_MASK)
#endif /* CONFIG_PPC_BOOK3S_64 */
/*