On 12/01/18 09:01, Mike Galbraith wrote: > On Fri, 2018-01-12 at 07:40 +0100, Juergen Gross wrote: >> On 12/01/18 05:25, Mike Galbraith 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. >> >> So I'm curious how this should be possible. > > Box is absolutely certain that it is. > >> Some questions: >> >> - which bootloader are you using? > > grub2, box is bog standard opensuse-42.3 > >> - what does /sys/kernel/boot_params/version contain? > > 0x020e
Hmm, what does: cat /sys/kernel/boot_params/data | od -t x1 -A x | grep -e ^0002 report? Please do that with 0c89cf36424f7c1177de8a5712514d7cc2eb369f reverted and with 2f74cbf947f45fa082dda8eac1a1f1299a372f49 applied. Juergen
