s390/nmi: handle vector validity failures for KVM guests

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The machine check validity bit tells about the context. If a KVM guest
was running the bit tells about the guest validity and the host state is
not affected. As a guest can disable the guest validity this might
result in unwanted host errors on machine checks.

Cc: stable@vger.kernel.org
Fixes: c929500d7a ("s390/nmi: s390: New low level handling for machine check happening in guest")
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Christian Borntraeger 2022-01-17 18:40:32 +01:00 • committed by Heiko Carstens

parent 1ea1d6a847

commit f094a39c6b

1 changed files with 8 additions and 1 deletions

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arch/s390/kernel/nmi.c

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