[PATCH] x86/powerpc make hardirq_ctx and softirq_ctx __read_mostly

[karo-tx-linux.git] / arch / powerpc / kernel / traps.c

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 4cbde211eb699b965385f7046b9b834f2c15ea44..91a6e04d9741fb197f4fb91ec039a1a154b2eabd 100644 (file)
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -228,7 +228,7 @@ void system_reset_exception(struct pt_regs *regs)
  */
 static inline int check_io_access(struct pt_regs *regs)
 {
-#ifdef CONFIG_PPC_PMAC
+#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
        unsigned long msr = regs->msr;
        const struct exception_table_entry *entry;
        unsigned int *nip = (unsigned int *)regs->nip;
@@ -261,7 +261,7 @@ static inline int check_io_access(struct pt_regs *regs)
                        return 1;
                }
        }
-#endif /* CONFIG_PPC_PMAC */
+#endif /* CONFIG_PPC_PMAC && CONFIG_PPC32 */
        return 0;
 }
 
@@ -308,8 +308,8 @@ platform_machine_check(struct pt_regs *regs)
 
 void machine_check_exception(struct pt_regs *regs)
 {
-#ifdef CONFIG_PPC64
        int recover = 0;
+       unsigned long reason = get_mc_reason(regs);
 
        /* See if any machine dependent calls */
        if (ppc_md.machine_check_exception)
@@ -317,8 +317,6 @@ void machine_check_exception(struct pt_regs *regs)
 
        if (recover)
                return;
-#else
-       unsigned long reason = get_mc_reason(regs);
 
        if (user_mode(regs)) {
                regs->msr |= MSR_RI;
@@ -462,7 +460,6 @@ void machine_check_exception(struct pt_regs *regs)
         * additional info, e.g. bus error registers.
         */
        platform_machine_check(regs);
-#endif /* CONFIG_PPC64 */
 
        if (debugger_fault_handler(regs))
                return;
@@ -661,7 +658,7 @@ static int emulate_instruction(struct pt_regs *regs)
        u32 instword;
        u32 rd;
 
-       if (!user_mode(regs))
+       if (!user_mode(regs) || (regs->msr & MSR_LE))
                return -EINVAL;
        CHECK_FULL_REGS(regs);
 
@@ -808,9 +805,11 @@ void __kprobes program_check_exception(struct pt_regs *regs)
 
 void alignment_exception(struct pt_regs *regs)
 {
-       int fixed;
+       int fixed = 0;
 
-       fixed = fix_alignment(regs);
+       /* we don't implement logging of alignment exceptions */
+       if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS))
+               fixed = fix_alignment(regs);
 
        if (fixed == 1) {
                regs->nip += 4; /* skip over emulated instruction */