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[S390] kernel: Pass correct stack for smp_call_ipl_cpu()

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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>
This commit is contained in:
Michael Holzheu 2012-03-13 11:25:08 -04:00 committed by Martin Schwidefsky
parent f5bfa159d2
commit c6da39f26c
1 changed files with 2 additions and 1 deletions
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3
arch/s390/kernel/smp.c
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@ -335,7 +335,8 @@ void smp_call_online_cpu(void (*func)(void *), void *data)
*/
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)