Re: [PATCH v4 08/10] KVM: s390: Add capability for storage key extension of MEM_OP IOCTL

[Christian Borntraeger]

Am 11.02.22 um 19:22 schrieb Janis Schoetterl-Glausch:
> Availability of the KVM_CAP_S390_MEM_OP_EXTENSION capability signals that:
> * The vcpu MEM_OP IOCTL supports storage key checking.
> * The vm MEM_OP IOCTL exists.
>
> Signed-off-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx>
> Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>

> ---
>   arch/s390/kvm/kvm-s390.c | 1 +
>   include/uapi/linux/kvm.h | 1 +
>   2 files changed, 2 insertions(+)
>
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index 773bccdd446c..c2c26c2aad64 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -564,6 +564,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
>   	case KVM_CAP_S390_VCPU_RESETS:
>   	case KVM_CAP_SET_GUEST_DEBUG:
>   	case KVM_CAP_S390_DIAG318:
> +	case KVM_CAP_S390_MEM_OP_EXTENSION:
>   		r = 1;
>   		break;
>   	case KVM_CAP_SET_GUEST_DEBUG2:
> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 4bc7623def87..08756eeea065 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1140,6 +1140,7 @@ struct kvm_ppc_resize_hpt {
>   #define KVM_CAP_VM_GPA_BITS 207
>   #define KVM_CAP_XSAVE2 208
>   #define KVM_CAP_SYS_ATTRIBUTES 209
> +#define KVM_CAP_S390_MEM_OP_EXTENSION 210
>   
>   #ifdef KVM_CAP_IRQ_ROUTING
>