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-rw-r--r--arch/powerpc/include/uapi/asm/mman.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/uapi/asm/mman.h b/arch/powerpc/include/uapi/asm/mman.h
index 03c06ba7464f..ab45cc2f3101 100644
--- a/arch/powerpc/include/uapi/asm/mman.h
+++ b/arch/powerpc/include/uapi/asm/mman.h
@@ -29,4 +29,20 @@
#define MAP_STACK 0x20000 /* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB 0x40000 /* create a huge page mapping */
+/*
+ * When MAP_HUGETLB is set, bits [26:31] of the flags argument to mmap(2),
+ * encode the log2 of the huge page size. A value of zero indicates that the
+ * default huge page size should be used. To use a non-default huge page size,
+ * one of these defines can be used, or the size can be encoded by hand. Note
+ * that on most systems only a subset, or possibly none, of these sizes will be
+ * available.
+ */
+#define MAP_HUGE_512KB (19 << MAP_HUGE_SHIFT) /* 512KB HugeTLB Page */
+#define MAP_HUGE_1MB (20 << MAP_HUGE_SHIFT) /* 1MB HugeTLB Page */
+#define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT) /* 2MB HugeTLB Page */
+#define MAP_HUGE_8MB (23 << MAP_HUGE_SHIFT) /* 8MB HugeTLB Page */
+#define MAP_HUGE_16MB (24 << MAP_HUGE_SHIFT) /* 16MB HugeTLB Page */
+#define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT) /* 1GB HugeTLB Page */
+#define MAP_HUGE_16GB (34 << MAP_HUGE_SHIFT) /* 16GB HugeTLB Page */
+
#endif /* _UAPI_ASM_POWERPC_MMAN_H */