Commit c6da39f2 authored Mar 13, 2012 by Michael Holzheu Committed by Martin Schwidefsky Mar 13, 2012

[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>

parent f5bfa159

arch/s390/kernel/smp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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)