M_IF_NEEDED is defined too many times. Move it to a common place.

Signed-off-by: Jason Yan <yanai...@huawei.com>
Cc: Diana Craciun <diana.crac...@nxp.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Christophe Leroy <christophe.le...@c-s.fr>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Nicholas Piggin <npig...@gmail.com>
Cc: Kees Cook <keesc...@chromium.org>
Reviewed-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/include/asm/nohash/mmu-book3e.h  | 10 ++++++++++
 arch/powerpc/kernel/exceptions-64e.S          | 10 ----------
 arch/powerpc/kernel/fsl_booke_entry_mapping.S | 10 ----------
 arch/powerpc/kernel/misc_64.S                 |  5 -----
 4 files changed, 10 insertions(+), 25 deletions(-)

diff --git a/arch/powerpc/include/asm/nohash/mmu-book3e.h 
b/arch/powerpc/include/asm/nohash/mmu-book3e.h
index 4c9777d256fb..0877362e48fa 100644
--- a/arch/powerpc/include/asm/nohash/mmu-book3e.h
+++ b/arch/powerpc/include/asm/nohash/mmu-book3e.h
@@ -221,6 +221,16 @@
 #define TLBILX_T_CLASS2                        6
 #define TLBILX_T_CLASS3                        7
 
+/*
+ * The mapping only needs to be cache-coherent on SMP, except on
+ * Freescale e500mc derivatives where it's also needed for coherent DMA.
+ */
+#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC)
+#define M_IF_NEEDED    MAS2_M
+#else
+#define M_IF_NEEDED    0
+#endif
+
 #ifndef __ASSEMBLY__
 #include <asm/bug.h>
 
diff --git a/arch/powerpc/kernel/exceptions-64e.S 
b/arch/powerpc/kernel/exceptions-64e.S
index 1cfb3da4a84a..fd49ec07ce4a 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -1342,16 +1342,6 @@ skpinv:  addi    r6,r6,1                         /* 
Increment */
        sync
        isync
 
-/*
- * The mapping only needs to be cache-coherent on SMP, except on
- * Freescale e500mc derivatives where it's also needed for coherent DMA.
- */
-#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC)
-#define M_IF_NEEDED    MAS2_M
-#else
-#define M_IF_NEEDED    0
-#endif
-
 /* 6. Setup KERNELBASE mapping in TLB[0]
  *
  * r3 = MAS0 w/TLBSEL & ESEL for the entry we started in
diff --git a/arch/powerpc/kernel/fsl_booke_entry_mapping.S 
b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
index ea065282b303..de0980945510 100644
--- a/arch/powerpc/kernel/fsl_booke_entry_mapping.S
+++ b/arch/powerpc/kernel/fsl_booke_entry_mapping.S
@@ -153,16 +153,6 @@ skpinv:    addi    r6,r6,1                         /* 
Increment */
        tlbivax 0,r9
        TLBSYNC
 
-/*
- * The mapping only needs to be cache-coherent on SMP, except on
- * Freescale e500mc derivatives where it's also needed for coherent DMA.
- */
-#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC)
-#define M_IF_NEEDED    MAS2_M
-#else
-#define M_IF_NEEDED    0
-#endif
-
 #if defined(ENTRY_MAPPING_BOOT_SETUP)
 
 /* 6. Setup KERNELBASE mapping in TLB1[0] */
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index b55a7b4cb543..26074f92d4bc 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -432,11 +432,6 @@ kexec_create_tlb:
        rlwimi  r9,r10,16,4,15          /* Setup MAS0 = TLBSEL | ESEL(r9) */
 
 /* Set up a temp identity mapping v:0 to p:0 and return to it. */
-#if defined(CONFIG_SMP) || defined(CONFIG_PPC_E500MC)
-#define M_IF_NEEDED    MAS2_M
-#else
-#define M_IF_NEEDED    0
-#endif
        mtspr   SPRN_MAS0,r9
 
        lis     r9,(MAS1_VALID|MAS1_IPROT)@h
-- 
2.17.2

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