icount: fix deadlock when all cpus are sleeping
When all cpus are sleeping (e.g in WFI), to avoid a deadlock in the main_loop, wake it up in order to start the warp timer. Signed-off-by: NClement Deschamps <clement.deschamps@greensocs.com> Message-Id: <20181021142103.19014-1-clement.deschamps@greensocs.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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