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由 Alex Bennée 提交于
I missed the fact that when an exclusive work item runs it drops the BQL to ensure all no vCPUs are stuck waiting for it, hence causing a deadlock. However the actual helper needs to take the BQL especially as we'll be messing with device emulation bits during the update which all assume BQL is held. We make a minor cpu_reloading_memory_map which must try and unlock the RCU if we are actually outside the running context. Reported-by: NLaurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: NAlex Bennée <alex.bennee@linaro.org> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
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