From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [patch 00/13] RFC: out of sync shadow
Date: Fri, 12 Sep 2008 08:51:20 -0300
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To: "David S. Ahern" <daahern@cisco.com>
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On Thu, Sep 11, 2008 at 10:05:12PM -0600, David S. Ahern wrote:
> Hi Marcelo:
> 
> This patchset causes my RHEL3 guest to hang during boot at one of the
> early sym53c8xx messages:
> 
> sym53c8xx: at PCI bus 0, device 5, functions 0
> 
> Using ide instead of scsi the guest proceeds farther, but inevitably
> hangs as well. I've tried dropping the amount of ram to 1024 and varied
> the number of vcpus as well (including 1 vcpu).
> 
> When it hangs kvm on the host is spinning on one of the cpus, and
> kvm/qemu appears to be 1 thread short. For the kvm process I expect to
> see 2 + Nvcpus threads (ps -C kvm -L). With this patchset I see 2 +
> Nvcpus - 1. (e.g., I usually run with 4 vcpus, so there should be 6
> threads. I see only 5).
> 
> I'm using kvm-git tip from a couple of days ago + this patch set. kvm
> userspace comes from kvm-75. Resetting to kvm-git and the guest starts
> up just fine.

David,

Please reload the kvm-intel module with "bypass_guest_pf=0" option.