diff options
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 16 | ||||
| -rw-r--r-- | arch/arm64/include/asm/barrier.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 290e13428f4a..9d56fe5fe69c 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -98,6 +98,22 @@ .endm /* + * Value prediction barrier + */ + .macro csdb + hint #20 + .endm + +/* + * NOP sequence + */ + .macro nops, num + .rept \num + nop + .endr + .endm + +/* * Emit an entry into the exception table */ .macro _asm_extable, from, to diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h index f2d2c0bbe21b..574486634c62 100644 --- a/arch/arm64/include/asm/barrier.h +++ b/arch/arm64/include/asm/barrier.h @@ -28,6 +28,8 @@ #define dmb(opt) asm volatile("dmb " #opt : : : "memory") #define dsb(opt) asm volatile("dsb " #opt : : : "memory") +#define csdb() asm volatile("hint #20" : : : "memory") + #define mb() dsb(sy) #define rmb() dsb(ld) #define wmb() dsb(st) |