From 0de9db37f0dff3bda21b3650ba60a21d3fe70df2 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Wed, 9 May 2012 16:27:35 +0200 Subject: [PATCH] s390: initialize backchain for ext_int_handler() To allow correct stack backtraces the backchain for the external interrupt handler is now initialized with zero like it is already done for example by io_int_handler(). Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/entry64.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 4e1c292fa7e3..6b5ea904e997 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -622,6 +622,7 @@ ext_skip: mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC stmg %r8,%r9,__PT_PSW(%r11) TRACE_IRQS_OFF + xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) lghi %r1,4096 lgr %r2,%r11 # pass pointer to pt_regs llgf %r3,__LC_EXT_CPU_ADDR # get cpu address + interruption code -- 2.20.1