KVM: s390: vsie: Allow non-zarch guests

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Linux/KVM runs in z/Architecture-only mode. Although z/Architecture
is built upon a long history of hardware refinements, any other
CPU mode is not permitted.

Allow a userspace to explicitly enable the use of ESA mode for
nested guests, otherwise usage will be rejected.

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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Eric Farman 2026-04-01 17:12:18 +02:00 • committed by Janosch Frank

parent 1653545abc

commit b0ad874d98

2 changed files with 6 additions and 3 deletions

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1

arch/s390/include/asm/kvm_host.h

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8

arch/s390/kvm/vsie.c

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