Signed-off-by: Liran Alon <liran.alon@xxxxxxxxxx>
Signed-off-by: Jim Mattson <jmattson@xxxxxxxxxx>
---
lib/x86/processor.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/lib/x86/processor.h b/lib/x86/processor.h
index e850029173ab..89ee528a2e36 100644
--- a/lib/x86/processor.h
+++ b/lib/x86/processor.h
@@ -443,4 +443,16 @@ static inline bool is_canonical(u64 addr)
return (s64)(addr << 16) >> 16 == addr;
}
+static inline void clear_bit(int bit, u8 *addr)
+{
+ __asm__ __volatile__("btr %1, %0"
+ : "+m" (*addr) : "Ir" (bit) : "cc", "memory");
+}
+
+static inline void set_bit(int bit, u8 *addr)
+{
+ __asm__ __volatile__("bts %1, %0"
+ : "+m" (*addr) : "Ir" (bit) : "cc", "memory");
+}
+
#endif
--
1.9.1
