arm64: move AARCH64_BREAK_FAULT into insn-def.h

[ Upstream commit 97e58e395e9c074fd096dad13c54e9f4112cf71d ]

If CONFIG_ARM64_LSE_ATOMICS is off, encoders for LSE-related instructions
can return AARCH64_BREAK_FAULT directly in insn.h. In order to access
AARCH64_BREAK_FAULT in insn.h, we can not include debug-monitors.h in
insn.h, because debug-monitors.h has already depends on insn.h, so just
move AARCH64_BREAK_FAULT into insn-def.h.

It will be used by the following patch to eliminate unnecessary LSE-related
encoders when CONFIG_ARM64_LSE_ATOMICS is off.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20220217072232.1186625-2-houtao1@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
[not exist insn-def.h file, move to insn.h]
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm64/include/asm/debug-monitors.h b/arch/arm64/include/asm/debug-monitors.h
index c16ed5b68768e27a34ab445bf1dfa7053935cd86..e1d166beb99bbc9e2b331af4ccc9d62b7aa56881 100644 (file)
--- a/arch/arm64/include/asm/debug-monitors.h
+++ b/arch/arm64/include/asm/debug-monitors.h
@@ -34,18 +34,6 @@
  */
 #define BREAK_INSTR_SIZE               AARCH64_INSN_SIZE
 
-/*
- * BRK instruction encoding
- * The #imm16 value should be placed at bits[20:5] within BRK ins
- */
-#define AARCH64_BREAK_MON      0xd4200000
-
-/*
- * BRK instruction for provoking a fault on purpose
- * Unlike kgdb, #imm16 value with unallocated handler is used for faulting.
- */
-#define AARCH64_BREAK_FAULT    (AARCH64_BREAK_MON | (FAULT_BRK_IMM << 5))
-
 #define AARCH64_BREAK_KGDB_DYN_DBG     \
        (AARCH64_BREAK_MON | (KGDB_DYN_DBG_BRK_IMM << 5))
 

diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h
index e16e43a1702b1860ffea6b5ea54682e098165340..8757107d3877d4d54d26f643acf33fcba3a09037 100644 (file)
--- a/arch/arm64/include/asm/insn.h
+++ b/arch/arm64/include/asm/insn.h
@@ -9,10 +9,23 @@
 #define        __ASM_INSN_H
 #include <linux/build_bug.h>
 #include <linux/types.h>
+#include <asm/brk-imm.h>
 
 /* A64 instructions are always 32 bits. */
 #define        AARCH64_INSN_SIZE               4
 
+/*
+ * BRK instruction encoding
+ * The #imm16 value should be placed at bits[20:5] within BRK ins
+ */
+#define AARCH64_BREAK_MON      0xd4200000
+
+/*
+ * BRK instruction for provoking a fault on purpose
+ * Unlike kgdb, #imm16 value with unallocated handler is used for faulting.
+ */
+#define AARCH64_BREAK_FAULT    (AARCH64_BREAK_MON | (FAULT_BRK_IMM << 5))
+
 #ifndef __ASSEMBLY__
 /*
  * ARM Architecture Reference Manual for ARMv8 Profile-A, Issue A.a