[Bug 1268906] Re: cpu soft lockup running kvm

[Stefan Bader]

OK, its not related to the eager fpu stuff. Just reproduced the same lockup with a test kernel that contained some potential fixes from upstream. The interesting part of the backtraces is that the EIP is changing and often not in a function that should be able to block.
So something seems to cause the __vcpu_run (called by kvm_arch_vcpu_ioctl_run) to spin in a relatively busy loop without ever exiting. The failed RDMSR most likely is harmless. Checking next what that "zapping shadow pages" might tell us.
Does anybody recall when (which kernel) this worked last on i386?

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Title:
  cpu soft lockup running kvm

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