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040000 tree 2ec6f9af014a44616f342a9e4b4972cef98f9c7e	kvm
040000 tree 2dab32f00c59a194820f2880f38c215a5510a6e2	ovm
040000 tree 220136b8fa65dd529a8843522f7b00cda444f8c3	simulator
040000 tree 2e0b7cb200f4fbc66e737d0c64d87ca26f5c06a3	ucs
040000 tree fa132487cab0e0a4255da4717492d9db7eac5b3e	vmware
040000 tree 136c50c32014818f209d16fc281a126e9d348162	xen