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commit31e323cca9upstream. Xen will shoot all the VCPUs when we do a shutdown hypercall, so there's no need to do it manually. In any case it will fail because all the IPI irqs have been pulled down by this point, so the cross-CPU calls will simply hang forever. Until change76fac077dbthe function calls were not synchronously waited for, so this wasn't apparent. However after that change the calls became synchronous leading to a hang on shutdown on multi-VCPU guests. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Alok Kataria <akataria@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>