Gleb Natapov wrote: > On Tue, Feb 02, 2010 at 07:56:42PM +0100, Jan Kiszka wrote: >> Jan Kiszka wrote: >>> Gleb Natapov wrote: >>>> On Tue, Feb 02, 2010 at 05:41:03PM +0100, Jan Kiszka wrote: >>>>> Gleb Natapov wrote: >>>>>> On Tue, Feb 02, 2010 at 05:29:53PM +0100, Jan Kiszka wrote: >>>>>>> Hi, >>>>>>> >>>>>>> notice while testing v2 of my vcpu state series: Starting SMP guests >>>>>>> like Linux or Vista without in-kernel irqchip and with more than one CPU >>>>>>> make them lock up during boot (Vista) or spit out messages like >>>>>>> >>>>>>> udevd[112] trap invalid opcode ip:7fc434630950 sp:7fff3cd3fcb8 error:0 >>>>>>> in libc-2.9.so[7fc4345b2000+14f000] >>>>>>> >>>>>> Looks like interrupt is injected as exception. Can you try to bisect? >>>>> Already started (as low prio background task), first looking for a good >>>>> version. If you know a recent one, I'm a taker. >>>>> >>>> Nope, didn't try no kernel irqchip for a long time. >>> Kernel plays the key role here, either kvm-kmod or actually the kvm >>> module: kvm-kmod-2.6.31.6 works, the 2.6.32 series and later do not. >>> Digging deeper... >> I take this back: It works for Linux guests, but Vista crashes also with >> old kvm-kmod. So there is no way around real debugging. >> > Upstream qemu-kvm/kvm works for me. Boot linux with -smp 2 and > windows2008-32 with -smp 4. We seem to have two issues: - kvm.git master breaks 64-bit linux guests under -no-kvm-irqchip + smp (#UD pop up in guest user space). 2.6.33 kvm is fine. Will try to bisect this the next days. - My Vista x64 image apparently suffer from a race (I suspect in user space) that lets it deadlock on a spinlock, independent of the underlying kernel kvm version. Jan
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