linux-kernel - Re: [PATCH v2 09/11] KVM: s390: Add capability for storage key extension of MEM

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Message-ID: <f61b1d7e-37bb-6072-a855-e7fc9ed72dfb@linux.ibm.com>
Date:   Tue, 8 Feb 2022 10:50:23 +0100
From:   Janosch Frank <frankja@...ux.ibm.com>
To:     Janis Schoetterl-Glausch <scgl@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>
Cc:     Alexander Gordeev <agordeev@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Jonathan Corbet <corbet@....net>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>
Subject: Re: [PATCH v2 09/11] KVM: s390: Add capability for storage key
 extension of MEM_OP IOCTL

On 2/7/22 17:59, Janis Schoetterl-Glausch wrote:
> 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.

Reviewed-by: Janosch Frank <frankja@...ux.ibm.com>

> 
> Signed-off-by: Janis Schoetterl-Glausch <scgl@...ux.ibm.com>
> ---
>   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 befb30923c0e..4a502cac068c 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -565,6 +565,7 @@ 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 ea81132a1cb1..50ce814267b3 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
>