Re: [PATCH RESEND v2] KVM: move KVM_CAP_DEVICE_CTRL to the generic check

[Michael Ellerman]

Wei Wang <wei.w.wang@xxxxxxxxx> writes:

> KVM_CAP_DEVICE_CTRL allows userspace to check if the kvm_device
> framework (e.g. KVM_CREATE_DEVICE) is supported by KVM. Move
> KVM_CAP_DEVICE_CTRL to the generic check for the two reasons:
> 1) it already supports arch agnostic usages (i.e. KVM_DEV_TYPE_VFIO).
> For example, userspace VFIO implementation may needs to create
> KVM_DEV_TYPE_VFIO on x86, riscv, or arm etc. It is simpler to have it
> checked at the generic code than at each arch's code.
> 2) KVM_CREATE_DEVICE has been added to the generic code.
>
> Link: https://lore.kernel.org/all/20221215115207.14784-1-wei.w.wang@xxxxxxxxx
> Signed-off-by: Wei Wang <wei.w.wang@xxxxxxxxx>
> Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
>  arch/arm64/kvm/arm.c       | 1 -
>  arch/powerpc/kvm/powerpc.c | 1 -

Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc)

cheers