Re: [PATCH v14 3/6] KVM: s390: pv: add KVM_CAP_S390_PROTECTED_ASYNC_DISABLE

Steffen Eiden
2022-10-04T13:44:57Z

On 9/30/22 16:01, Claudio Imbrenda wrote:
> Add KVM_CAP_S390_PROTECTED_ASYNC_DISABLE to signal that the
> KVM_PV_ASYNC_DISABLE and KVM_PV_ASYNC_DISABLE_PREPARE commands for the
> KVM_S390_PV_COMMAND ioctl are available.
>
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
LGTM.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>

> ---
> arch/s390/kvm/kvm-s390.c | 3 +++
> include/uapi/linux/kvm.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index d0027964a6f5..7a3bd68efd85 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -618,6 +618,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
> case KVM_CAP_S390_BPB:
> r = test_facility(82);
> break;
> + case KVM_CAP_S390_PROTECTED_ASYNC_DISABLE:
> + r = async_destroy && is_prot_virt_host();
> + break;
> case KVM_CAP_S390_PROTECTED:
> r = is_prot_virt_host();
> break;
> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 02602c5c1975..9afe0084b2c5 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1177,6 +1177,7 @@ struct kvm_ppc_resize_hpt {
> #define KVM_CAP_VM_DISABLE_NX_HUGE_PAGES 220
> #define KVM_CAP_S390_ZPCI_OP 221
> #define KVM_CAP_S390_CPU_TOPOLOGY 222
> +#define KVM_CAP_S390_PROTECTED_ASYNC_DISABLE 225
>
> #ifdef KVM_CAP_IRQ_ROUTING
>