Query can now return true or false like normal command, to interrupt execution, it might be needed if a query need to wait for another event. Change-Id: Ic463287ecd88e6b63a53f2cb9a46c83d3419618c Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63537 Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Bobby Bruce <bbruce@ucdavis.edu>