Re: [PATCH v5 03/14] cpus: extract out TCG-specific code to accel/tcg

[Richard Henderson]

On 8/12/20 11:32 AM, Claudio Fontana wrote:
> +static int64_t tcg_get_virtual_clock(void)
> +{
> +    if (icount_enabled()) {
> +        return icount_get();
> +    }
> +    return cpu_get_clock();
> +}
> +
> +static int64_t tcg_get_elapsed_ticks(void)
> +{
> +    if (icount_enabled()) {
> +        return icount_get();
> +    }
> +    return cpu_get_ticks();
> +}
> +
> +CpusAccel tcg_cpus = {
> +    .create_vcpu_thread = tcg_start_vcpu_thread,
> +    .kick_vcpu_thread = tcg_kick_vcpu_thread,
> +    .get_virtual_clock = tcg_get_virtual_clock,
> +    .get_elapsed_ticks = tcg_get_elapsed_ticks,
> +};

I think this variable should be const.  Which of course means that the previous
patch needs to add const annotations.

I think you should actually have multiple dispatch variables: with icount and
without, with mttcg and without.  That way these methods don't have to check
icount_enabled() or qemu_tcg_mttcg_enabled() at runtime, only at startup.


r~