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-rw-r--r--arch/sh/include/asm/pgtable.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index 43ef3e99fdd..3cd7127af95 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -36,6 +36,12 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define NEFF_SIGN (1LL << (NEFF - 1))
#define NEFF_MASK (-1LL << NEFF)
+static inline unsigned long long neff_sign_extend(unsigned long val)
+{
+ unsigned long long extended = val;
+ return (extended & NEFF_SIGN) ? (extended | NEFF_MASK) : extended;
+}
+
#ifdef CONFIG_29BIT
#define NPHYS 29
#else