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| author |   Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2012-05-09 16:27:35 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-05-16 14:42:37 +0200 |
| commit | 0de9db37f0dff3bda21b3650ba60a21d3fe70df2 (patch) | |
| tree | 6cfd033bebc8ae951c31294e40294ecd33262c29 /arch/s390/kernel/entry64.S | |
| parent | s390/crash dump: add missing SMP dependency (diff) | |
| download | linux-dev-0de9db37f0dff3bda21b3650ba60a21d3fe70df2.tar.xz linux-dev-0de9db37f0dff3bda21b3650ba60a21d3fe70df2.zip | |
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 <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry64.S')
| -rw-r--r-- | arch/s390/kernel/entry64.S | 1 |
1 files changed, 1 insertions, 0 deletions
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 |