[Xen-devel] dom0 hang

To:	xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-devel] dom0 hang
From:	Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
Date:	Wed, 24 Jun 2009 11:15:44 -0700
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Here are the details on the dom0 hang:

xen: 3.4.0
dom0: 2.6.18-128

dom0.vcpu0: spinning in schedule() on spinlock: spin_lock_irq(&rq->lock);
dom0.vcpu1: eip == ret after __HYPERVISOR_event_channel_op hypercall

Just of of curiosity, I set breakpoint at the above ret in kdb, and it nevergot hit. So I wondered why vcpu1 is not getting scheculed, and noticed thatxen.schedule always schedules vcpu0. Two cpus on the box, other one is mostlyin idle.


anyways, I've turned lock debugging on in dom0 and reproducing it right now.

thanks,
Mukesh

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[Xen-devel] dom0 hang