Re: [Xenomai-help] Freeze on SMP x86-64

[Jan Kiszka <jan.kiszka@domain.hid>]

Roman Pisl wrote:
> Hello,
> I just tried x86-64 SMP Linux/Xenomai on my workstation (Intel Core2
> Quad) but it freezes immediately after latency test or clocktest is
> started. It freezes even during the boot, when Xenomai debbuging is
> enabled.
> 
> The same kernel binary runs seamlessly in KVM on the same machine.

Did you run kvm (qemu) with -smp 2 (or even 4)?

> 
> When I completely disable ACPI, the kernel recognizes only one CPU and
> the latency test works.
> 
> The same configuration but for 32bit x86 also runs without freeze.
> 
> Do you have any ideas?

You could try playing with the NMI watchdog support (enable related
Xenomai feature, pass nmi_watchdog=2 as kernel option). That may be able
to generate some backtrace after the box is bricked - maybe...

Jan

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