Re: [dpdk-dev] [PATCH] bus/pci: set intr_handle type for secondary processes

["Burakov, Anatoly" <anatoly.burakov@intel.com>]

On 27-Sep-18 1:30 PM, Alejandro Lucero wrote:
> Invoking rte_pci_read/write_config functions requires device with
> a intr_handle type for using VFIO or UIO driver related functions.
> 
> Secondary processes rely on primary processes for device initialization
> so they do not usually require using these functions. However, some PMDs,
> like NFP PMD, require using these functions even for secondary processes.
> 
> Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
> ---

Hi Alejandro,

I’m curious of consequences of setting intr handle to a valid value when 
we don’t have an interrupt thread. Something may try to use it (although 
I couldn’t find any such usage).

PCI config read really uses intr handle type to discover userspace 
driver type – this seems ever so slightly wrong, and looks like 
something that should be part of rte_device somewhere, independent of 
interrupt types. Do we have any other alternative to do the same thing 
(i.e. know what userspace driver is used for a particular PCI device)?

-- 
Thanks,
Anatoly