[dpdk-dev] [PATCH] bus/pci: set intr_handle type for secondary processes
Burakov, Anatoly
anatoly.burakov at intel.com
Thu Oct 18 18:26:35 CEST 2018
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 at 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
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