powerpc: Add new transactional memory state to the signal context

This adds the new transactional memory archtected state to the signal context
in both 32 and 64 bit.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Author: mikey

arch/powerpc/include/asm/reg.h

@@ -120,6 +120,7 @@
 #define TM_CAUSE_FAC_UNAV	0xfa
 #define TM_CAUSE_SYSCALL	0xf9 /* Persistent */
 #define TM_CAUSE_MISC		0xf6
+#define TM_CAUSE_SIGNAL		0xf4
 
 #if defined(CONFIG_PPC_BOOK3S_64)
 #define MSR_64BIT	MSR_SF

arch/powerpc/kernel/signal.h

@@ -25,13 +25,21 @@ extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
 
 extern unsigned long copy_fpr_to_user(void __user *to,
 				      struct task_struct *task);
+extern unsigned long copy_transact_fpr_to_user(void __user *to,
+					       struct task_struct *task);
 extern unsigned long copy_fpr_from_user(struct task_struct *task,
 					void __user *from);
+extern unsigned long copy_transact_fpr_from_user(struct task_struct *task,
+						 void __user *from);
 #ifdef CONFIG_VSX
 extern unsigned long copy_vsx_to_user(void __user *to,
 				      struct task_struct *task);
+extern unsigned long copy_transact_vsx_to_user(void __user *to,
+					       struct task_struct *task);
 extern unsigned long copy_vsx_from_user(struct task_struct *task,
 					void __user *from);
+extern unsigned long copy_transact_vsx_from_user(struct task_struct *task,
+						 void __user *from);
 #endif
 
 #ifdef CONFIG_PPC64