s390/smp: kasan stack instrumentation support

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smp_start_secondary function is called without DAT enabled. To avoid
disabling kasan instrumentation for entire arch/s390/kernel/smp.c
smp_start_secondary has been split in 2 parts. smp_start_secondary has
instrumentation disabled, it does minimal setup and enables DAT. Then
instrumentated __smp_start_secondary is called to do the rest.

__load_psw_mask function instrumentation has been disabled as well
to be able to call it from smp_start_secondary.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Vasily Gorbik 2017-11-20 12:13:52 +01:00 • committed by Martin Schwidefsky

parent dde709d136

commit 9e8df6daed

2 changed files with 4 additions and 4 deletions

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2

arch/s390/include/asm/processor.h

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6

arch/s390/kernel/smp.c

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