Re: [PATCH/RFC 9/9] KVM: s390: Create ioctl for Getting/Setting guest storage keys

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On Mon, 16 Mar 2015 09:51:45 +0100
Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:

> From: "Jason J. Herne" <jjherne@xxxxxxxxxxxxxxxxxx>
> 
> Provide the KVM_S390_GET_SKEYS and KVM_S390_SET_SKEYS ioctl which can be used
> to get/set guest storage keys. This functionality is needed for live migration
> of s390 guests that use storage keys.
> 
> Signed-off-by: Jason J. Herne <jjherne@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
>  Documentation/virtual/kvm/api.txt |  58 ++++++++++++++++++
>  arch/s390/kvm/kvm-s390.c          | 122 ++++++++++++++++++++++++++++++++++++++
>  include/uapi/linux/kvm.h          |  14 +++++
>  3 files changed, 194 insertions(+)
> 

> @@ -791,6 +801,7 @@ struct kvm_ppc_smmu_info {
>  #define KVM_CAP_S390_VECTOR_REGISTERS 107
>  #define KVM_CAP_S390_MEM_OP 108
>  #define KVM_CAP_S390_USER_STSI 109
> +#define KVM_CAP_S390_SKEYS 110

Hm... did you forget to actually advertise this cap?

> 
>  #ifdef KVM_CAP_IRQ_ROUTING
> 

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