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KVM: s390: gmap: Make storage keys optional

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Guard guest storage key handling behind `KVM_S390_MANAGES_S390_GUEST`.
This enables other KVM implementations to use gmap without implementing
storage key infrastructure. Define KVM_S390_MANAGES_S390_GUEST to 1 for
KVM hosts managing s390 guests (in kvm_host_s390.h). A KVM
implementation not implementing those features must define
KVM_S390_MANAGES_S390_GUEST to 0 in its kvm_host_<guest_arch>.h.

No functional changes besides the new guard.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
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Steffen Eiden 2026-08-03 13:22:39 +02:00 • committed by Christian Borntraeger
commit a07276d5d1
5 changed files with 17 additions and 0 deletions
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