[PATCH] x86-64: Remove unwind stack pointer alignment forcing again

This was added as a workaround for the fallback unwinder not supporting
unaligned stack pointers properly. But now it was fixed to do that,
so it's not needed anymore

Cc: mingo@elte.hu
Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 4fdd162..a1641ff 100644 (file)
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -309,12 +309,6 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
                if (tsk && tsk != current)
                        stack = (unsigned long *)tsk->thread.rsp;
        }
-       /*
-        * Align the stack pointer on word boundary, later loops
-        * rely on that (and corruption / debug info bugs can cause
-        * unaligned values here):
-        */
-       stack = (unsigned long *)((unsigned long)stack & ~(sizeof(long)-1));
 
        /*
         * Print function call entries within a stack. 'cond' is the