Guests no longer shut down unexpectedly during reboot
On a Red Hat Enterprise Linux 7.4 guest running on *qemu-kvm-1.5.3-139.el7*, if the *i6300esb watchdog* was set to `poweroff`, the watchdog was triggered when shutting down due to the timeout being calculated incorrectly. Consequently, when rebooting the guest, it shut down instead. With this update, the timeout calculations in *qemu-kvm* have been corrected. As a result, the virtual machine reboots properly.