> Which kvm/qemu-kvm version? Newer ones will verify that you actually have VT-d fully enabled. kvm module version is :kvm-83-105.el5_4.13 (from modinfo) > Can you do 'dmesg | grep -e DMAR -e IOMMU' in the host and then we can verify that the IOMMU is functioning. dmesg output: ACPI: DMAR (v001 AMI OEMDMAR 0x00000001 MSFT 0x00000097) @ 0x00000000bf79e0c0 DMAR:Host address width 40 DMAR:DRHD (flags: 0x00000001)base: 0x00000000fbffe000 DMAR:RMRR base: 0x00000000000ec000 end: 0x00000000000effff DMAR:RMRR base: 0x00000000bf7ec000 end: 0x00000000bf7fffff DMAR:Unknown DMAR structure type > You may need to configure VT-d support in your kernel, or manually enable it on the kernel commandline (intel_iommu=on). Oh...I see, > RHEL5.4 host, yeah, you need intel_iommu=on. That did not help. Thanks, Yevgeny-- 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
