Michael Young wrote xen-4.0.0-0.2.rc4.fc12.src.rpm for Xen-4-rc4 for Fedora 12 to install Hypervisor (changeset 20950). Schema bellow modifying content of mentioned src.rpm allows to build set of RPMS upgrading Xen Hypersor 4.0 matching current tip CS of http://xenbits.xensource.com/xen-unstable.hg,no matter of rc4 in fact, via hot upgrade without rebuilding development Xen System on top of F12 with recent PVOps kernel 2.6.32.9. Directory gemu-xen.git is only determined by value of QEMU_TAG in Config.mk file under xen-unstable tree clone.
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