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Re: [x86-tip] RSDP changes converted i4790 box SMP -> UP

* Mike Galbraith <mgalbraith@xxxxxxx> wrote:

> Hi Juergen,
> Yesterday I wanted to test the RETPOLINE stuff in tip and tip-rt, but
> discovered instead that my box had turned into a complete slug, not due
> to incredible RETPOLINE overhead, rather because box had forgotten that
> it had more than one CPU.  I was going to leave it for the weekend, but
> firing up gitk over morning java, I noticed the commits below, and sure
> enough, that's what broke my box.  Given other people's boxen work,
> seems likely that the authors of the AMI BIOS in this box were a bit
> more creative than usual.
> commit 9ede5d5e672586e016eadd5c0aedb6f12e660029 (HEAD -> x86-tip)
> Author: Mike Galbraith <mgalbraith@xxxxxxx>
> Date:   Fri Jan 12 04:17:52 2018 +0100
>     Revert "x86/boot: Add the ACPI RSDP address to struct setup_header::acpi_rdsp_addr"
>     This reverts commit 2f74cbf947f45fa082dda8eac1a1f1299a372f49.
> commit 0d0b6a9a0d452eaf635580fce8319d49be8b45ed
> Author: Mike Galbraith <mgalbraith@xxxxxxx>
> Date:   Fri Jan 12 04:17:30 2018 +0100
>     Revert "x86/acpi: Take the RSDP address for boot parameters if available"
>     This reverts commit 0c89cf36424f7c1177de8a5712514d7cc2eb369f.

Ok, I've excluded tip:x86/boot from tip:master for the time being - these commits 
are not v4.16 ready apparently.