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KVM: s390: allow user space to handle instr 0x0000

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We will use illegal instruction 0x0000 for handling 2 byte sw breakpoints
from user space. As it can be enabled dynamically via a capability,
let's move setting of ICTL_OPEREXC to the post creation step, so we avoid
any races when enabling that capability just while adding new cpus.

Acked-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand
2016-06-21 14:19:51 +02:00
committed by Christian Borntraeger
parent af1bae5497
commit 6502a34cfd
5 changed files with 43 additions and 2 deletions
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include/uapi/linux/kvm.h
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@@ -867,6 +867,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_VCPU_ATTRIBUTES 127
#define KVM_CAP_MAX_VCPU_ID 128
#define KVM_CAP_X2APIC_API 129
#define KVM_CAP_S390_USER_INSTR0 130
#ifdef KVM_CAP_IRQ_ROUTING