diff options
| author | Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2012-05-09 10:27:35 -0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-05-16 08:42:37 -0400 |
| commit | 0de9db37f0dff3bda21b3650ba60a21d3fe70df2 (patch) | |
| tree | 6cfd033bebc8ae951c31294e40294ecd33262c29 /arch/s390/kernel/entry64.S | |
| parent | 54310a2d9e109e1cbe24e41388def33ff0391cd1 (diff) | |
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: | |||
| 622 | mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC | 622 | mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC |
| 623 | stmg %r8,%r9,__PT_PSW(%r11) | 623 | stmg %r8,%r9,__PT_PSW(%r11) |
| 624 | TRACE_IRQS_OFF | 624 | TRACE_IRQS_OFF |
| 625 | xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) | ||
| 625 | lghi %r1,4096 | 626 | lghi %r1,4096 |
| 626 | lgr %r2,%r11 # pass pointer to pt_regs | 627 | lgr %r2,%r11 # pass pointer to pt_regs |
| 627 | llgf %r3,__LC_EXT_CPU_ADDR # get cpu address + interruption code | 628 | llgf %r3,__LC_EXT_CPU_ADDR # get cpu address + interruption code |