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Re: [Xen-devel] [RFC 19/19] xl: Add new option dtdev



Hi Wei,

On 06/16/2014 06:19 PM, Wei Liu wrote:
> On Mon, Jun 16, 2014 at 05:18:06PM +0100, Julien Grall wrote:
> [...]
>> +    if (!xlu_cfg_get_list (config, "dtdev", &dtdevs, 0, 0)) {
>> +        d_config->num_dtdevs = 0;
>> +        d_config->dtdevs = NULL;
>> +        for (i = 0; (buf = xlu_cfg_get_listitem(dtdevs, i)) != NULL; i++) {
>> +            libxl_device_dt *dtdev;
>> +
>> +            d_config->dtdevs = (libxl_device_dt *) 
>> realloc(d_config->dtdevs, sizeof (libxl_device_dt) * (d_config->num_dtdevs + 
>> 1));
>> +            dtdev = d_config->dtdevs + d_config->num_dtdevs;
>> +            libxl_device_dt_init(dtdev);
>> +
> 
> There's a macro called ARRAY_EXTEND_INIT, you can probably use that.

I can't use this macro because it requires to have a field devid in the
structure.

I don't think it worth to add this field just for code conciseness.
Though I can add rename this macro into ARRAY_EXTEND_INIT_DEVID and
introduce an ARRAY_EXTEND_INIT that could be use in more general case.

Regards,

-- 
Julien Grall

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