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KVM: s390: implement the RI support of guest

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This patch adds runtime instrumentation support for KVM guest. We need to
setup a save area for the runtime instrumentation-controls control block(RICCB)
and implement the necessary interfaces to live migrate the guest settings.

We setup the sie control block in a way, that the runtime
instrumentation instructions of a guest are handled by hardware.

We also add a capability KVM_CAP_S390_RI to make this feature opt-in as
it needs migration support.

Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Fan Zhang
2016-01-07 18:24:29 +08:00
committed by Christian Borntraeger
parent c57ee5faf4
commit c6e5f16637
4 changed files with 28 additions and 1 deletions
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include/uapi/linux/kvm.h
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@@ -849,6 +849,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_SPLIT_IRQCHIP 121
#define KVM_CAP_IOEVENTFD_ANY_LENGTH 122
#define KVM_CAP_HYPERV_SYNIC 123
#define KVM_CAP_S390_RI 124
#ifdef KVM_CAP_IRQ_ROUTING