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040000 tree 23ec8798b8cbc6da03d0d30ffb4904f2221128ff	hyperv
040000 tree d1b6e8ffa6316be6e33cde83c8310c790d54864a	kvm
040000 tree 2efb2bbe91065d79511f0d57db1a084a3038f222	ovm
040000 tree 0b8956baf994e22b1dc7898ce066983812570a24	simulator
040000 tree f6612150b7b8d1ed2b4bb497186e4c8a8be5a4b8	ucs
040000 tree f7721fb8f19ae716ad0f53893268b81064eadc10	vmware
040000 tree 463cebcb5993f433c91ddc0412a5eac4ab282225	xen