On Thu, Aug 13, 2020 at 02:05:17PM +0800, Peng Liang wrote:
> Add KVM_CAP_ARM_CPU_FEATURE extension for userpace to check whether KVM
> supports to set CPU features in AArch64.
>
> Signed-off-by: zhanghailiang <zhang.zhanghailiang@xxxxxxxxxx>
> Signed-off-by: Peng Liang <liangpeng10@xxxxxxxxxx>
> ---
> arch/arm64/kvm/arm.c | 1 +
> include/uapi/linux/kvm.h | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
> index 18ebbe1c64ee..72b9e8fc606f 100644
> --- a/arch/arm64/kvm/arm.c
> +++ b/arch/arm64/kvm/arm.c
> @@ -194,6 +194,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
> case KVM_CAP_ARM_IRQ_LINE_LAYOUT_2:
> case KVM_CAP_ARM_NISV_TO_USER:
> case KVM_CAP_ARM_INJECT_EXT_DABT:
> + case KVM_CAP_ARM_CPU_FEATURE:
> r = 1;
> break;
> case KVM_CAP_ARM_SET_DEVICE_ADDR:
> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 1029444d04aa..0eca4f7c7fef 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1035,6 +1035,7 @@ struct kvm_ppc_resize_hpt {
> #define KVM_CAP_LAST_CPU 184
> #define KVM_CAP_SMALLER_MAXPHYADDR 185
> #define KVM_CAP_S390_DIAG318 186
> +#define KVM_CAP_ARM_CPU_FEATURE 187
>
> #ifdef KVM_CAP_IRQ_ROUTING
>
> --
> 2.18.4
>
All new caps should be documented in Documentation/virt/kvm/api.rst
Thanks,
drew
