s390/nmi: use the normal asynchronous stack for machine checks

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If a machine checks is received while the CPU is in the kernel, only
the s390_do_machine_check function will be called. The call to
s390_handle_mcck is postponed until the CPU returns to user space.
Because of this it is safe to use the asynchronous stack for machine
checks even if the CPU is already handling an interrupt.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2015-06-22 17:28:14 +02:00

parent a359bb1190

commit 2acb94f431

1 changed files with 9 additions and 16 deletions

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arch/s390/kernel/entry.S

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