FWIW, I am running my own mainline LT 4.9.x kernel, and don't need acpi=off.
As long as I don't add any PCIe cards, I don't get the errors like the ones you pasted.
If you are interested, I'm more than happy to share my src.rpm for 4.9.x, but won't be able to get to it before tomorrow morning as the machine was recently mothballed.

Gordan


On Fri, Sep 22, 2017 at 11:34 AM, Jeremiah Rothschild <jeremiah@franz.com> wrote:
On Fri, Sep 22, 2017 at 08:14:03AM +0100, Gordan Bobic wrote:
> Do you have any PCIe cards in yours?

Actually, no.

> What is DT mode?
>
> >From my understanding of the thread so far, both Jeremiah and I are running
> Tianocore UEFI firmware, chain loaded from u-boot.

That's right. I originally miscommented that I was not running UEFI then
later followed up that I was.

It seems fairly clear to me that someone introduced an ACPI related bug in
4.5.0-25 and onwards. My system was always fine and always able to boot
without adding 'acpi=off' until that version.

> On Fri, Sep 22, 2017 at 10:06 AM, Marcin Juszkiewicz <
> marcin.juszkiewicz@linaro.org> wrote:
>
> > W dniu 22.09.2017 o 02:35, Jeremiah Rothschild pisze:
> > > I'm happy I can boot now. If I can also stop the errors, that'd be great.
> >
> > Seriously, check uefi firmware. I doubt that anyone tested CentOS 4.11
> > kernel on ARM server with U-Boot (or DT mode).
> > _______________________________________________
> > Arm-dev mailing list
> > Arm-dev@centos.org
> > https://lists.centos.org/mailman/listinfo/arm-dev
> >

> _______________________________________________
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