K 10 svn:author V 8 cperciva K 8 svn:date V 27 2018-08-26T03:56:54.938575Z K 7 svn:log V 530 Disable atkbd0 and atkdbc0 in EC2 AMIs. This has the effect of skipping the probing and attaching of the PS/2 mouse (not present on EC2) and keyboard (emulated, but not accessible via EC2). Note that we disable atkbd0 separately even though during device probing it shows up as a child of atkbdc0; this is necessary because the device is also initialized during the early console setup from hammer_time. This change cuts the kernel boot time on an EC2 c5.4xlarge instance from 7259ms down to 4727 ms. Approved by: re (marius) END