static void sev_migrate_from(struct kvm *dst_kvm, struct kvm *src_kvm)
{
	struct kvm_sev_info *dst = &to_kvm_svm(dst_kvm)->sev_info;
	struct kvm_sev_info *src = &to_kvm_svm(src_kvm)->sev_info;
	struct kvm_sev_info *mirror;

	dst->active = true;
	dst->asid = src->asid;
	dst->handle = src->handle;
	dst->pages_locked = src->pages_locked;
	dst->enc_context_owner = src->enc_context_owner;

	src->asid = 0;
	src->active = false;
	src->handle = 0;
	src->pages_locked = 0;
	src->enc_context_owner = NULL;

	list_cut_before(&dst->regions_list, &src->regions_list, &src->regions_list);

	/*
	 * If this VM has mirrors, "transfer" each mirror's refcount of the
	 * source to the destination (this KVM).  The caller holds a reference
	 * to the source, so there's no danger of use-after-free.
	 */
	list_cut_before(&dst->mirror_vms, &src->mirror_vms, &src->mirror_vms);
	list_for_each_entry(mirror, &dst->mirror_vms, mirror_entry) {
		kvm_get_kvm(dst_kvm);
		kvm_put_kvm(src_kvm);
		mirror->enc_context_owner = dst_kvm;
	}

	/*
	 * If this VM is a mirror, remove the old mirror from the owners list
	 * and add the new mirror to the list.
	 */
	if (is_mirroring_enc_context(dst_kvm)) {
		struct kvm_sev_info *owner_sev_info =
			&to_kvm_svm(dst->enc_context_owner)->sev_info;

		list_del(&src->mirror_entry);
		list_add_tail(&dst->mirror_entry, &owner_sev_info->mirror_vms);
	}
}
static void sev_migrate_from(struct kvm *dst_kvm, struct kvm *src_kvm)
{
	struct kvm_sev_info *dst = &to_kvm_svm(dst_kvm)->sev_info;
	struct kvm_sev_info *src = &to_kvm_svm(src_kvm)->sev_info;
	struct kvm_sev_info *mirror;

	dst->active = true;
	dst->asid = src->asid;
	dst->handle = src->handle;
	dst->pages_locked = src->pages_locked;
	dst->enc_context_owner = src->enc_context_owner;

	src->asid = 0;
	src->active = false;
	src->handle = 0;
	src->pages_locked = 0;
	src->enc_context_owner = NULL;

	list_cut_before(&dst->regions_list, &src->regions_list, &src->regions_list);

	 
	list_cut_before(&dst->mirror_vms, &src->mirror_vms, &src->mirror_vms);
	list_for_each_entry(mirror, &dst->mirror_vms, mirror_entry) {
		kvm_get_kvm(dst_kvm);
		kvm_put_kvm(src_kvm);
		mirror->enc_context_owner = dst_kvm;
	}

	 
	if (is_mirroring_enc_context(dst_kvm)) {
		struct kvm_sev_info *owner_sev_info =
			&to_kvm_svm(dst->enc_context_owner)->sev_info;

		list_del(&src->mirror_entry);
		list_add_tail(&dst->mirror_entry, &owner_sev_info->mirror_vms);
	}
}