[ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing Harvard...

[powerpc.git] / include / asm-arm / processor.h

diff --git a/include/asm-arm/processor.h b/include/asm-arm/processor.h
index fb5877e..04f4d34 100644 (file)
--- a/include/asm-arm/processor.h
+++ b/include/asm-arm/processor.h
@@ -49,6 +49,12 @@ struct thread_struct {
 
 #define INIT_THREAD  { }
 
+#ifdef CONFIG_MMU
+#define nommu_start_thread(regs) do { } while (0)
+#else
+#define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data
+#endif
+
 #define start_thread(regs,pc,sp)                                       \
 ({                                                                     \
        unsigned long *stack = (unsigned long *)sp;                     \
@@ -65,6 +71,7 @@ struct thread_struct {
        regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \
        regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \
        regs->ARM_r0 = stack[0];        /* r0 (argc) */                 \
+       nommu_start_thread(regs);                                       \
 })
 
 /* Forward declaration, a strange C thing */
@@ -86,7 +93,7 @@ unsigned long get_wchan(struct task_struct *p);
 extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 
 #define task_pt_regs(p) \
-       ((struct pt_regs *)(THREAD_START_SP + (void *)(p)->thread_info) - 1)
+       ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
 
 #define KSTK_EIP(tsk)  task_pt_regs(tsk)->ARM_pc
 #define KSTK_ESP(tsk)  task_pt_regs(tsk)->ARM_sp