3 commits

Author	SHA1	Message	Date
Robert Morris	46744c4a13	for spinlocks, use gcc intrinsics, but say what they compile to	2019-06-13 10:00:50 -04:00
Robert Morris	ca39672a30	clean up virtio code	2019-06-13 09:40:17 -04:00
Robert Morris	de9d72c908	virtio disk driver	2019-06-13 06:49:02 -04:00