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-rw-r--r--arch/arc/include/asm/entry.h2
-rw-r--r--arch/arc/include/asm/processor.h2
-rw-r--r--arch/arc/include/asm/ptrace.h2
-rw-r--r--arch/arc/kernel/process.c2
4 files changed, 3 insertions, 5 deletions
diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h
index 5bbec8a..2b274fa 100644
--- a/arch/arc/include/asm/entry.h
+++ b/arch/arc/include/asm/entry.h
@@ -252,7 +252,7 @@
ld \out, [\tsk, TASK_THREAD_INFO]
/* Go to end of page where stack begins (grows upwards) */
- add2 \out, \out, (THREAD_SIZE - 4)/4 /* one word GUTTER */
+ add2 \out, \out, (THREAD_SIZE)/4
.endm
diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h
index 5f26b2c..81efbca 100644
--- a/arch/arc/include/asm/processor.h
+++ b/arch/arc/include/asm/processor.h
@@ -50,7 +50,7 @@ struct task_struct;
unsigned long thread_saved_pc(struct task_struct *t);
#define task_pt_regs(p) \
- ((struct pt_regs *)(THREAD_SIZE - 4 + (void *)task_stack_page(p)) - 1)
+ ((struct pt_regs *)(THREAD_SIZE + (void *)task_stack_page(p)) - 1)
/* Free all resources held by a thread. */
#define release_thread(thread) do { } while (0)
diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h
index 6179de7..f82a3a2 100644
--- a/arch/arc/include/asm/ptrace.h
+++ b/arch/arc/include/asm/ptrace.h
@@ -110,7 +110,7 @@ struct callee_regs {
/* open-coded current_thread_info() */ \
register unsigned long sp asm ("sp"); \
unsigned long pg_start = (sp & ~(THREAD_SIZE - 1)); \
- (struct pt_regs *)(pg_start + THREAD_SIZE - 4) - 1; \
+ (struct pt_regs *)(pg_start + THREAD_SIZE) - 1; \
})
static inline long regs_return_value(struct pt_regs *regs)
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index cad6685..949bfd5 100644
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -75,8 +75,6 @@ asmlinkage void ret_from_fork(void);
* ~ ~
* | --to-- | (scratch Regs of user mode)
* | r0 |
- * ------------------
- * | UNUSED 1 word|
* ------------------ <===== END of PAGE
*/
int copy_thread(unsigned long clone_flags,
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