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KVM: Add per-vm capability enablement.

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Allow KVM_ENABLE_CAP to act on a vm as well as on a vcpu. This makes more
sense when the caller wants to enable a vm-related capability.

s390 will be the first user; wire it up.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Cornelia Huck 2013-10-23 18:26:34 +02:00
commit d938dc5522
3 changed files with 33 additions and 2 deletions
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5
include/uapi/linux/kvm.h
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@ -741,6 +741,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_EXT_EMUL_CPUID 95
#define KVM_CAP_HYPERV_TIME 96
#define KVM_CAP_IOAPIC_POLARITY_IGNORED 97
#define KVM_CAP_ENABLE_CAP_VM 98
#ifdef KVM_CAP_IRQ_ROUTING
@ -1076,6 +1077,10 @@ struct kvm_s390_ucas_mapping {
/* Available with KVM_CAP_DEBUGREGS */
#define KVM_GET_DEBUGREGS _IOR(KVMIO, 0xa1, struct kvm_debugregs)
#define KVM_SET_DEBUGREGS _IOW(KVMIO, 0xa2, struct kvm_debugregs)
/*
* vcpu version available with KVM_ENABLE_CAP
* vm version available with KVM_CAP_ENABLE_CAP_VM
*/
#define KVM_ENABLE_CAP _IOW(KVMIO, 0xa3, struct kvm_enable_cap)
/* Available with KVM_CAP_XSAVE */
#define KVM_GET_XSAVE _IOR(KVMIO, 0xa4, struct kvm_xsave)