Hi, Keir, This patch adds a missing check for pirq values after mapping MSI pirqs. Normally, if mapping pirq succeeds, xen will return pirq value mapped. However, if "msi_irq_enable = 1" is not specified, this hypercall still succeeds, but pirq value is not valid. Best Regards Haitao Shan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel