Re: [PATCH v9 0/5] treewide: Remove I/O port accessors for HAS_IOPORT=n

[Niklas Schnelle <schnelle@linux.ibm.com>]

On Fri, 2024-10-25 at 13:41 +0000, Arnd Bergmann wrote:
> On Thu, Oct 24, 2024, at 17:54, Niklas Schnelle wrote:
> > Hi All,
> > 
> > This is a follow up in my long running effort of making inb()/outb() and
> > similar I/O port accessors compile-time optional. After initially
> > sending this as a treewide series with the latest revision at[0]
> > we switched to per subsystem series. Now though as we're left with only
> > 5 patches left I'm going back to a single series with Arnd planning
> > to take this via the the asm-generic tree.
> > 
> > This series may also be viewed for your convenience on my git.kernel.org
> > tree[1] under the b4/has_ioport branch. As for compile-time vs runtime
> > see Linus' reply to my first attempt[2].
> 
> Hi Niklas,
> 
> Thanks for your endless work on this. I have now pulled it into
> the asm-generic tree as I want to ensure we get enough time to
> test this as part of linux-next before the merge window.
> 
> If minor issues still come up, I would try to fix those as
> add-on patches to avoid rebasing my tree.
> 
> I also expect that we will continue with add-on patches in
> the future, in particular I hope to make HAS_IOPORT optional
> on arm, arm64 and powerpc, and only enabled for
> configurations that actually want it.
> 
>      Arnd
> 

Thanks for taking it and sticking by my side through this! Now let's
just hope there won't be too much fallout but I will be here to help if
needed. As for arm, arm64, and powerpc I like it, having more
!HAS_IOPORT targets will help to share the load of new inb()/outb()
which "worked for me on x86". I definitely learned a lot in the
process. Of course I wished and originally expected it to go a lot
faster but hey looks like we might persevere in the end. And yes, I
will pour myself a drink when this finally made it into Linus' tree :-)
And then when we meet at some conference in the future we can laugh
about how this turned from a 5 line patch into at least 53 commits over
3 years.

Thanks,
Niklas