We have verified VT-d2 features works with PCI passthrough on KVM. To enable it, you need to turn on interrupt remapping in kernel config. Interrupt remapping is a security/isolation feature where interrupt delivery is qualified with device's bus/device/function in interrupt remapping table entry when source ID checking is turn on. It does not directly inject interrupt to the guest OS. -----Original Message----- From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On Behalf Of Fischer, Anna Sent: Thursday, May 14, 2009 2:53 PM To: kvm@xxxxxxxxxxxxxxx Subject: KVM & VT-d2? Does KVM already take advantage of Intel VT-d2 features, e.g. interrupt remapping support? Has anyone verified how it improves interrupt delivery for PCI pass-through devices? Thanks, Anna -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
