[PATCH] amd64: task_pt_regs()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 2ea4acd..68df519 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -822,8 +822,7 @@
 {
 	struct pt_regs *pp, ptregs;
 
-	pp = (struct pt_regs *)(tsk->thread.rsp0);
-	--pp; 
+	pp = task_pt_regs(tsk);
 
 	ptregs = *pp; 
 	ptregs.cs &= 0xffff;