RHEL 6 documentation says: {{ Secure device assignment also requires interrupt remapping support. If a platform does not support interrupt remapping, device assignment will fail. To use device assignment without interrupt remapping support in a development environment, set the allow_unsafe_assigned_interrupts KVM module parameter to 1. }}
and I get in dmesg:
[ 5556.500176] kvm_iommu_map_guest: No interrupt remapping support, disallowing device assignment. Re-enble with "allow_unsafe_assigned_interrupts=1" module option.
Easy to create
/etc/modprobe.d/kvm.conf containing
options kvm allow_unsafe_assigned_interrupts=1
However, there is CVE-2011-1898 which this makes your system vulnerable to see:
I'm trying with 12.04 LTS KVM host and guest.
RHEL 6 documentation says: {{ Secure device assignment also requires interrupt remapping support. If a platform does not support interrupt remapping, device assignment will fail. To use device assignment without interrupt remapping support in a development environment, set the allow_unsafe_ assigned_ interrupts KVM module parameter to 1. }}
and I get in dmesg:
[ 5556.500176] kvm_iommu_ map_guest: No interrupt remapping support, disallowing device assignment. Re-enble with "allow_ unsafe_ assigned_ interrupts= 1" module option.
Easy to create d/kvm.conf containing
/etc/modprobe.
options kvm allow_unsafe_ assigned_ interrupts= 1
However, there is CVE-2011-1898 which this makes your system vulnerable to see:
https:/ /bugzilla. redhat. com/show_ bug.cgi? id=715555