[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] HVM crash system on AMD APU A8-6600K
>>> On 08.04.14 at 10:40, <highwaystar.ru@xxxxxxxxx> wrote: > I can summirize and duplicate previous logs. > > - Whole system crashed means system going to hard reset without any > notice in log or on screen. screen goes black and next thing what I > can see is POST of real hardware. > - Without passing the GPU problem still here. Log provided made with > empty hvm config: > name = 'blank' > builder = 'hvm' > memory = 1024 > - logs with options sync_console and watchdog attached, both made with > blank HVM config > - lspci of my system attached > - the way case my system doesnt crash is using debug xen version > I can make new log on this system. Okay, so - the logs seem to indicate multiple VM starts ("AMD-Vi: Share p2m table with iommu: p2m table = 0x..."), but that's hard to tell without guest_loglvl=all - the "APIC error on CPU..." messages seem to be issued at boot time, i.e. we can likely discount them being relevant for the reboot you observe The system spontaneously rebooting is of course going to be harder to debug than an ordinary crash. Since you can't see the issue with a debug hypervisor, and since the "hvm_debug=" option by default is effective only in debug hypervisors, you'll want to edit xen/include/asm-x86/hvm/support.h to always enable this, and then pass "hvm_debug=0xfff" on the Xen command line. This is going to be very verbose, so you'll have to see whether you would better turn off one or the other bit in that mask. All we want to see is whether this allows us to see when in the process of starting the guest the system dies, including whether this is always at the same point. That may then allow us to hand you a debugging patch to further isolate things. Another thing to check is whether with the IOMMU turned off entirely you also see the problem. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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