7 files changed, 64 insertions, 16 deletions

diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S
index 9352ab5200e5..271793577cdc 100644
--- a/arch/powerpc/kernel/vdso32/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S
@@ -24,7 +24,7 @@ SECTIONS
 
         . = ALIGN(16);
         .text           : {
-                *(.text .stub .text.* .gnu.linkonce.t.*)
+                *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
         }
         PROVIDE(__etext = .);
         PROVIDE(_etext = .);
diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S
index 7d6585f90277..e608d1bd3bff 100644
--- a/arch/powerpc/kernel/vdso64/vdso64.lds.S
+++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S
@@ -24,7 +24,7 @@ SECTIONS
 
         . = ALIGN(16);
         .text           : {
-                *(.text .stub .text.* .gnu.linkonce.t.*)
+                *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
                 *(.sfpr .glink)
         }                                               :text
         PROVIDE(__etext = .);
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 0c3000bf8d75..3c07811989fc 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -35,7 +35,7 @@ SECTIONS
                 ALIGN_FUNCTION();
                 *(.text.head)
                 _text = .;
-                *(.text .fixup .text.init.refok .exit.text.refok)
+                *(.text .fixup .text.init.refok .exit.text.refok __ftr_alt_*)
                 SCHED_TEXT
                 LOCK_TEXT
                 KPROBES_TEXT
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index f6fd5d2ff10d..973d547ef01d 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -22,6 +22,8 @@ struct fixup_entry {
         unsigned long   value;
         long            start_off;
         long            end_off;
+        long            alt_start_off;
+        long            alt_end_off;
 };
 
 static void patch_feature_section(unsigned long value, struct fixup_entry *fcur)
diff --git a/include/asm-powerpc/feature-fixups.h b/include/asm-powerpc/feature-fixups.h
index 35f927888fe8..ab30129dced7 100644
--- a/include/asm-powerpc/feature-fixups.h
+++ b/include/asm-powerpc/feature-fixups.h
@@ -29,24 +29,35 @@
 #define FTR_ENTRY_OFFSET        PPC_LONG
 #endif
 
+#define START_FTR_SECTION(label)        label##1:
+
+#define FTR_SECTION_ELSE_NESTED(label)                  \
+label##2:                                               \
+        .pushsection __ftr_alt_##label,"a";             \
+        .align 2;                                       \
+label##3:
+
 #define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)   \
-99:                                                     \
-        .section sect,"a";                              \
+label##4:                                               \
+        .popsection;                                    \
+        .pushsection sect,"a";                          \
         .align 3;                                       \
-98:                                                     \
+label##5:                                               \
         FTR_ENTRY_LONG msk;                             \
         FTR_ENTRY_LONG val;                             \
-        FTR_ENTRY_OFFSET label##b-98b;                  \
-        FTR_ENTRY_OFFSET 99b-98b;                       \
-        .previous
-
+        FTR_ENTRY_OFFSET label##1b-label##5b;           \
+        FTR_ENTRY_OFFSET label##2b-label##5b;           \
+        FTR_ENTRY_OFFSET label##3b-label##5b;           \
+        FTR_ENTRY_OFFSET label##4b-label##5b;           \
+        .popsection;
 
 
 /* CPU feature dependent sections */
-#define BEGIN_FTR_SECTION_NESTED(label) label:
-#define BEGIN_FTR_SECTION               BEGIN_FTR_SECTION_NESTED(97)
+#define BEGIN_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
+#define BEGIN_FTR_SECTION               START_FTR_SECTION(97)
 
-#define END_FTR_SECTION_NESTED(msk, val, label) \
+#define END_FTR_SECTION_NESTED(msk, val, label)                 \
+        FTR_SECTION_ELSE_NESTED(label)                          \
         MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
 
 #define END_FTR_SECTION(msk, val)               \
@@ -55,12 +66,27 @@
 #define END_FTR_SECTION_IFSET(msk)      END_FTR_SECTION((msk), (msk))
 #define END_FTR_SECTION_IFCLR(msk)      END_FTR_SECTION((msk), 0)
 
+/* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */
+#define FTR_SECTION_ELSE        FTR_SECTION_ELSE_NESTED(97)
+#define ALT_FTR_SECTION_END_NESTED(msk, val, label)     \
+        MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
+#define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label)    \
+        ALT_FTR_SECTION_END_NESTED(msk, msk, label)
+#define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label)    \
+        ALT_FTR_SECTION_END_NESTED(msk, 0, label)
+#define ALT_FTR_SECTION_END(msk, val)   \
+        ALT_FTR_SECTION_END_NESTED(msk, val, 97)
+#define ALT_FTR_SECTION_END_IFSET(msk)  \
+        ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97)
+#define ALT_FTR_SECTION_END_IFCLR(msk)  \
+        ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
 
 /* Firmware feature dependent sections */
-#define BEGIN_FW_FTR_SECTION_NESTED(label)      label:
-#define BEGIN_FW_FTR_SECTION                    BEGIN_FW_FTR_SECTION_NESTED(97)
+#define BEGIN_FW_FTR_SECTION_NESTED(label)      START_FTR_SECTION(label)
+#define BEGIN_FW_FTR_SECTION                    START_FTR_SECTION(97)
 
-#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
+#define END_FW_FTR_SECTION_NESTED(msk, val, label)              \
+        FTR_SECTION_ELSE_NESTED(label)                          \
         MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
 
 #define END_FW_FTR_SECTION(msk, val)            \
@@ -69,6 +95,22 @@
 #define END_FW_FTR_SECTION_IFSET(msk)   END_FW_FTR_SECTION((msk), (msk))
 #define END_FW_FTR_SECTION_IFCLR(msk)   END_FW_FTR_SECTION((msk), 0)
 
+/* Firmware feature sections with alternatives */
+#define FW_FTR_SECTION_ELSE_NESTED(label)       FTR_SECTION_ELSE_NESTED(label)
+#define FW_FTR_SECTION_ELSE     FTR_SECTION_ELSE_NESTED(97)
+#define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label)  \
+        MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
+#define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label) \
+        ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label)
+#define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
+        ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label)
+#define ALT_FW_FTR_SECTION_END(msk, val)        \
+        ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97)
+#define ALT_FW_FTR_SECTION_END_IFSET(msk)       \
+        ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97)
+#define ALT_FW_FTR_SECTION_END_IFCLR(msk)       \
+        ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index 079999b032af..7256efb5c140 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -732,6 +732,8 @@
                                 "       .llong %1\n"                    \
                                 "       .llong 97b-98b\n"               \
                                 "       .llong 99b-98b\n"               \
+                                "       .llong 0\n"                     \
+                                "       .llong 0\n"                     \
                                 ".previous"                             \
                         : "=r" (rval) : "i" (CPU_FTR_CELL_TB_BUG)); rval;})
 #else
diff --git a/include/asm-powerpc/timex.h b/include/asm-powerpc/timex.h
index 92dedde761d1..c55e14f7ef44 100644
--- a/include/asm-powerpc/timex.h
+++ b/include/asm-powerpc/timex.h
@@ -38,6 +38,8 @@ static inline cycles_t get_cycles(void)
                 "       .long 0\n"
                 "       .long 97b-98b\n"
                 "       .long 99b-98b\n"
+                "       .long 0\n"
+                "       .long 0\n"
                 ".previous"
                 : "=r" (ret) : "i" (CPU_FTR_601));
         return ret;