powerpc/64s: Move branch cache flushing bcctr variant to ppc-ops.h

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200609070610.846703-6-npiggin@gmail.com

arch/powerpc/include/asm/ppc-opcode.h

@@ -195,6 +195,7 @@
 #define OP_LQ    56
 
 /* sorted alphabetically */
+#define PPC_INST_BCCTR_FLUSH		0x4c400420
 #define PPC_INST_BHRBE			0x7c00025c
 #define PPC_INST_CLRBHRB		0x7c00035c
 #define PPC_INST_COPY			0x7c20060c
@@ -437,6 +438,7 @@
 #endif
 
 /* Deal with instructions that older assemblers aren't aware of */
+#define	PPC_BCCTR_FLUSH		stringify_in_c(.long PPC_INST_BCCTR_FLUSH)
 #define	PPC_CP_ABORT		stringify_in_c(.long PPC_INST_CP_ABORT)
 #define	PPC_COPY(a, b)		stringify_in_c(.long PPC_INST_COPY | \
 					___PPC_RA(a) | ___PPC_RB(b))

arch/powerpc/kernel/entry_64.S

@@ -261,8 +261,6 @@ _ASM_NOKPROBE_SYMBOL(save_nvgprs);
 1:	nop;			\
 	patch_site 1b, patch__call_flush_branch_caches
 
-#define BCCTR_FLUSH	.long 0x4c400420
-
 .macro nops number
 	.rept \number
 	nop
@@ -293,7 +291,7 @@ flush_branch_caches:
 	li	r9,0x7fff
 	mtctr	r9
 
-	BCCTR_FLUSH
+	PPC_BCCTR_FLUSH
 
 2:	nop
 	patch_site 2b patch__flush_count_cache_return
@@ -302,7 +300,7 @@ flush_branch_caches:
 
 	.rept 278
 	.balign 32
-	BCCTR_FLUSH
+	PPC_BCCTR_FLUSH
 	nops	7
 	.endr