Re: [RFC v2 5/5] eal: configure initial device probing

[Bruce Richardson]

On Thu, Feb 26, 2026 at 05:20:56PM +0100, David Marchand wrote:
> Some applications use port hotplug as their primary way for using DPDK
> resources.
> Having a systematic device probing is a problem when not all available
> resources will be used by the application, as such applications won't set
> an explicit allow list at startup.
> 
> This is the case for OVS on systems with multiple mlx5 devices:
> one device can be used by the kernel while the other(s) are used by DPDK.
> In such a setup, the kernel used device may get reconfigured in
> unexpected ways and trigger issues like the one described by Kevin
> not so long ago in bugzilla 1873.
> 
> Add an EAL option so that we can change the default behavior from
> block-listing to allow-listing.
> 
> Signed-off-by: David Marchand <david.march...@redhat.com>
> ---
> Changes since RFC v1:
> - changed approach following Bruce suggestion,
Acked-by: Bruce Richardson <bruce.richard...@intel.com>