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s390/mcck: move storage error checks to assembler
The current storage errors tackling is wrong - the DAT is enabled in assembler code before the actual storage checks in C half are executed. In case the page tables themselves are damaged such approach is not going to work. With this update unrecoverable storage errors are not passed to C code for handling, but rather the machine is stopped right away. The only exception to this flow is when a machine check occurred in KVM guest - in this case the errors are reinjected by the handler. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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Alexander Gordeev
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Vasily Gorbik
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Jul 5, 2021
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