Re: [PATCH 2/2] KVM: use KVM_{GET|SET}_SREGS2 when supported by kvm.

[Paolo Bonzini]

On 01/04/21 16:45, Maxim Levitsky wrote:
> +
> +    for (i = 0; i < 4; i++) {
> +        sregs.pdptrs[i] = env->pdptrs[i];
> +    }
> +
> +    sregs.flags = 0;
> +    sregs.padding = 0;
> +
> +    return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_SREGS2, &sregs);
> +}
> +

This breaks when migrating from old to new kernel, because in that case 
the PDPTRs are not initialized.

Paolo