The required CONFIG_XEN_COMPAT value for ec2 is documented here: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/AdvancedUsers.html
The required CONFIG_XEN_COMPAT value for ec2 is documented here: http:// docs.amazonwebs ervices. com/AWSEC2/ latest/ UserGuide/ AdvancedUsers. html