On 28/09/2019 04:07, Roman Shaposhnik wrote: > On Thu, Sep 26, 2019 at 12:44 AM Jan Beulich <jbeul...@suse.com> wrote: >> On 26.09.2019 00:31, Roman Shaposhnik wrote: >>> Jan, Roger, thank you so much for the initial ideas. I tried a few of >>> those and here's where I am. >>> >>> First of all, it is definitely related to CPU bring up. Adding >>> cpuidle=0 to xen command line made Xen boot. >>> >>> Then, a good friend of mine (who you may know from ancient Xen days >>> ;-)) suggested that this could be related to this: >>> https://wiki.xenproject.org/wiki/Xen_power_management >>> so I went to the BIOS settings and quite to my surprise all of them >>> were grayed out (not tweakable). >>> >>> The only one that wasn't was 2xAPIC support. So just for kicks -- I >>> disabled that. >>> >>> That, in turn, made Xen boot even without cpuidle=0. I'm attaching that log. >> Interesting, but unfortunately this particular log is of no real use >> for investigation of the issue (other than knowing the CPU model). I >> also notice it's a 4.12.0 log, when your original report was against >> latest master. >> >>> So I guess at this point, you could say that I have a functional >>> system, but I'm curious whether you guys would be interested to look >>> into 2xAPIC situation. >> Of course we do. As a next step I'd suggest reverting the BIOS settings >> change you did, and instead using the "x2apic=0" Xen command line option. > Interestingly enough, this doesn't really solve the problem completely. > Specifying x2apic=0 certainly makes Xen go much further to a point > where it tries to load Dom0 and then the console VGA screen goes > blank (this is where that serial debug output would be very useful :-().
Do you not even have IPMI SoL? Its basically impossible to buy servers without this base level of functionality. It will be somewhere in the iLO configuration on an HP server. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
