Re: [patch 21/33] genirq/msi: Provide msi_domain_alloc_irq_at()

[Reinette Chatre]

Hi Thomas,

On 11/18/2022 2:59 PM, Reinette Chatre wrote:
> On 11/18/2022 2:31 PM, Thomas Gleixner wrote:
>> On Fri, Nov 18 2022 at 10:18, Reinette Chatre wrote:
>>>> @@ -141,7 +141,7 @@ static int msi_insert_desc(struct device *dev, struct msi_desc *desc,
>>>>  		if (ret)
>>>>  			goto fail;
>>>>  
>>>> -		desc->msi_index = index;
>>>> +		desc->msi_index = index - baseidx;
>>>
>>> Could msi_desc->msi_index be made bigger? The hardware I am testing
>>> on claims to support more IMS entries than what the u16 can
>>> accommodate.
>>
>> Sure that's trivial. How big does it claim it is?
> 
> 2048

Dave Jiang corrected me ... the max the hardware can support
is 16128 so the current size of msi_index is sufficient.

Reinette