[PATCH] powerpc: merge align.c

This patch merges align.c, the result isn't quite what was in ppc64 nor
what was in ppc32 :) It should implement all the functionalities of both
though. Kumar, since you played with that in the past, I suppose you
have some test cases for verifying that it works properly before I dig
out the 601 machine ? :)

Since it's likely that I won't be able to test all scenario, code
inspection is much welcome.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/Makefile

@@ -12,7 +12,7 @@ CFLAGS_btext.o		+= -fPIC
 endif
 
 obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
-				   irq.o signal_32.o pmc.o vdso.o
+				   irq.o align.o signal_32.o pmc.o vdso.o
 obj-y				+= vdso32/
 obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
 				   signal_64.o ptrace32.o systbl.o \

arch/ppc/kernel/Makefile

@@ -13,7 +13,7 @@ extra-$(CONFIG_POWER4)		+= idle_power4.o
 extra-y				+= vmlinux.lds
 
 obj-y				:= entry.o traps.o idle.o time.o misc.o \
-					process.o align.o \
+					process.o \
 					setup.o \
 					ppc_htab.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
@@ -38,7 +38,7 @@ endif
 # These are here while we do the architecture merge
 
 else
-obj-y				:= idle.o align.o
+obj-y				:= idle.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o
 obj-$(CONFIG_MODULES)		+= module.o

arch/ppc64/kernel/Makefile

@@ -2,6 +2,6 @@
 # Makefile for the linux ppc64 kernel.
 #
 
-obj-y               +=	idle.o align.o
+obj-y               +=	idle.o
 
 obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o

include/asm-powerpc/cputable.h

@@ -90,6 +90,7 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
 #define CPU_FTR_NEED_COHERENT		ASM_CONST(0x0000000000020000)
 #define CPU_FTR_NO_BTIC			ASM_CONST(0x0000000000040000)
 #define CPU_FTR_BIG_PHYS		ASM_CONST(0x0000000000080000)
+#define CPU_FTR_NODSISRALIGN  		ASM_CONST(0x0000000000100000)
 
 #ifdef __powerpc64__
 /* Add the 64b processor unique features in the top half of the word */
@@ -97,7 +98,6 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
 #define CPU_FTR_16M_PAGE      		ASM_CONST(0x0000000200000000)
 #define CPU_FTR_TLBIEL         		ASM_CONST(0x0000000400000000)
 #define CPU_FTR_NOEXECUTE     		ASM_CONST(0x0000000800000000)
-#define CPU_FTR_NODSISRALIGN  		ASM_CONST(0x0000001000000000)
 #define CPU_FTR_IABR  			ASM_CONST(0x0000002000000000)
 #define CPU_FTR_MMCRA  			ASM_CONST(0x0000004000000000)
 #define CPU_FTR_CTRL			ASM_CONST(0x0000008000000000)
@@ -113,7 +113,6 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
 #define CPU_FTR_16M_PAGE      		ASM_CONST(0x0)
 #define CPU_FTR_TLBIEL         		ASM_CONST(0x0)
 #define CPU_FTR_NOEXECUTE     		ASM_CONST(0x0)
-#define CPU_FTR_NODSISRALIGN  		ASM_CONST(0x0)
 #define CPU_FTR_IABR  			ASM_CONST(0x0)
 #define CPU_FTR_MMCRA  			ASM_CONST(0x0)
 #define CPU_FTR_CTRL			ASM_CONST(0x0)
@@ -273,18 +272,21 @@ enum {
 	CPU_FTRS_POWER3_32 = CPU_FTR_COMMON | CPU_FTR_SPLIT_ID_CACHE |
 	    CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE,
 	CPU_FTRS_POWER4_32 = CPU_FTR_COMMON | CPU_FTR_SPLIT_ID_CACHE |
-	    CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE,
+	    CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_NODSISRALIGN,
 	CPU_FTRS_970_32 = CPU_FTR_COMMON | CPU_FTR_SPLIT_ID_CACHE |
 	    CPU_FTR_USE_TB | CPU_FTR_HPTE_TABLE | CPU_FTR_ALTIVEC_COMP |
-	    CPU_FTR_MAYBE_CAN_NAP,
+	    CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN,
 	CPU_FTRS_8XX = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB,
-	CPU_FTRS_40X = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB,
-	CPU_FTRS_44X = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB,
-	CPU_FTRS_E200 = CPU_FTR_USE_TB,
-	CPU_FTRS_E500 = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB,
+	CPU_FTRS_40X = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
+	    CPU_FTR_NODSISRALIGN,
+	CPU_FTRS_44X = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
+	    CPU_FTR_NODSISRALIGN,
+	CPU_FTRS_E200 = CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN,
+	CPU_FTRS_E500 = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
+	    CPU_FTR_NODSISRALIGN,
 	CPU_FTRS_E500_2 = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
-	    CPU_FTR_BIG_PHYS,
-	CPU_FTRS_GENERIC_32 = CPU_FTR_COMMON,
+	    CPU_FTR_BIG_PHYS | CPU_FTR_NODSISRALIGN,
+	CPU_FTRS_GENERIC_32 = CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN,
 #ifdef __powerpc64__
 	CPU_FTRS_POWER3 = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
 	    CPU_FTR_HPTE_TABLE | CPU_FTR_IABR,