[EXTERNAL] Re: [PATCH v3 3/9] raw/cnxk_rvu_lf: add PMD API to get BAR addresses

[Stephen Hemminger]

On Tue, 22 Oct 2024 12:08:22 +0200
David Marchand <david.marchand at redhat.com> wrote:

> On Tue, Oct 22, 2024 at 8:06 AM Akhil Goyal <gakhil at marvell.com> wrote:
> > > The rational to NOT pull "Hardware abstraction library using the BAR
> > > address" to DPDK are
> > > -Yet another 200K of driver C++ code which does not make sense to keep
> > > in dpdk.org
> > > -It can not implemenent any of the current subsystems
> > >
> > > In this context, let me know what you think?  
> 
> This hardware abstraction library will have to call some driver
> specific API (like the added raw/cnxk_rvu API).
> Can this library directly use the PCI driver API, and call the cnxk
> common driver?
> If so, there is no need to add another driver API (that breaks
> layers), and the rawdev driver is only about adding the mailbox
> features.
> 


This seems related to the discussion of binary drivers in the TB.
There was discussion that any/all use of binary drivers means that the any
crashes in DPDK could be cause by that binary. Like the Linux kernel,
we need a "tainted" policy. Where any bug reports on tainted use of DPDK
are just rejected and forwarded to the binary driver vendor.