[S390] kernel: Pass correct stack for smp_call_ipl_cpu()
Currently pcpu_devices->panic_stack is passed to pcpu_delegate() in
smp_call_ipl_cpu(). This is wrong because pcpu_delegate() expects
the bottom (high address) of the stack and pcpu_devices->panic_stack
points to the top (low address). We now pass the bottom of the stack
which is pcpu_devices->panic_stack + PAGE_SIZE.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 3b9e5c9..64ebbcb 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -335,7 +335,8 @@
*/
void smp_call_ipl_cpu(void (*func)(void *), void *data)
{
- pcpu_delegate(&pcpu_devices[0], func, data, pcpu_devices->panic_stack);
+ pcpu_delegate(&pcpu_devices[0], func, data,
+ pcpu_devices->panic_stack + PAGE_SIZE);
}
int smp_find_processor_id(u16 address)