Re: [PATCH for-6.0 1/8] spapr/xive: Turn some sanity checks into assertions

[Cédric Le Goater]

On 11/20/20 6:46 PM, Greg Kurz wrote:
> The sPAPR XIVE device is created by the machine in spapr_irq_init().
> The latter overrides any value provided by the user with -global for
> the "nr-irqs" and "nr-ends" properties with strictly positive values.
> 
> It seems reasonable to assume these properties should never be 0,
> which wouldn't make much sense by the way.
> 
> Signed-off-by: Greg Kurz <groug@kaod.org>

Reviewed-by: Cédric Le Goater <clg@kaod.org>

> ---
>  hw/intc/spapr_xive.c | 14 ++++----------
>  1 file changed, 4 insertions(+), 10 deletions(-)
> 
> diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
> index 1fa09f287ac0..60e0d5769dcc 100644
> --- a/hw/intc/spapr_xive.c
> +++ b/hw/intc/spapr_xive.c
> @@ -296,22 +296,16 @@ static void spapr_xive_realize(DeviceState *dev, Error 
> **errp)
>      XiveENDSource *end_xsrc = &xive->end_source;
>      Error *local_err = NULL;
>  
> +    /* Set by spapr_irq_init() */
> +    g_assert(xive->nr_irqs);
> +    g_assert(xive->nr_ends);
> +
>      sxc->parent_realize(dev, &local_err);
>      if (local_err) {
>          error_propagate(errp, local_err);
>          return;
>      }
>  
> -    if (!xive->nr_irqs) {
> -        error_setg(errp, "Number of interrupt needs to be greater 0");
> -        return;
> -    }
> -
> -    if (!xive->nr_ends) {
> -        error_setg(errp, "Number of interrupt needs to be greater 0");
> -        return;
> -    }
> -
>      /*
>       * Initialize the internal sources, for IPIs and virtual devices.
>       */
>