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(parent: a359bb1) | patch
s390/nmi: use the normal asynchronous stack for machine checks
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 22 Jun 2015 15:28:14 +0000 (17:28 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 22 Jul 2015 07:58:04 +0000 (09:58 +0200)
commit2acb94f43128b5cd375873f9ba82fac968d3ce5d
treeb825fe17618a75120289e09a2c6910ab8ce62732tree | snapshot (tar.gz zip)
parenta359bb1190f213d282f4934fd461cf440d87dae0commit | diff
s390/nmi: use the normal asynchronous stack for machine checks

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>
arch/s390/kernel/entry.S diff | blob | blame | history