[Qemu-devel] Re: [RFC PATCH 00/20] Kemari for KVM v0.1

[Avi Kivity]

On 04/21/2010 08:57 AM, Yoshiaki Tamura wrote:
> Kemari starts synchronizing VMs when QEMU handles I/O requests.
> Without this patch VCPU state is already proceeded before
> synchronization, and after failover to the VM on the receiver, it
> hangs because of this.
>    

We discussed moving the barrier to the actual output device, instead of 
the I/O port.  This allows you to complete the I/O transaction before 
starting synchronization.

Does it not work for some reason?

--
Do not meddle in the internals of kernels, for they are subtle and quick to 
panic.