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SubjectRe: [RFC PATCH 08/11] KVM: x86: Let moving encryption context be configurable
On 8/8/23 01:01, Ackerley Tng wrote:
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 75d48379d94d..a1a28dd77b94 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -6351,7 +6351,14 @@ static int kvm_vm_move_enc_context_from(struct kvm *kvm, unsigned int source_fd)
> if (r)
> goto out_mark_migration_done;
>
> - r = static_call(kvm_x86_vm_move_enc_context_from)(kvm, source_kvm);
> + /*
> + * Different types of VMs will allow userspace to define if moving
> + * encryption context should be supported.
> + */
> + if (kvm->arch.vm_move_enc_ctxt_supported &&
> + kvm_x86_ops.vm_move_enc_context_from) {
> + r = static_call(kvm_x86_vm_move_enc_context_from)(kvm, source_kvm);
> + }

Rather than "supported" this is more "required". So perhaps
kvm->arch.use_vm_enc_ctxt_op?

Paolo

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