intel-xeon-core BSP is mentioned in many places in Wind River® Linux User's Guide 6.0, but it doesn't exist anymore. This BSP used to exist in WRL5 but was replaced with intel-x86-64.
Follow the doc in "30 Deploying KVM System Images", "Create the Host and Guest Systems": $ /<lx6-install>/wrlinux-6/wrlinux/configure --enable-kernel=standard --enable-rootfs=glibc_std --enable-board=intel-xeon-core --with-template=feature/kvm ERROR: You selected an invalid enable-board option Valid boards are: bcm-563xx bcm-xlp cav-octeon3 fsl-b4xxx fsl-e500mc fsl-imx6 fsl-p2020 fsl-t2xxx fsl-t4xxx intel-x86-32 intel-x86-64 lsi-acp34xx lsi-axm55xx qemuarm qemuarma9 qemumips qemumips-64 qemumips64 qemuppc qemux86 qemux86-64 ti-66ak2hxx ti-am335x ti-am437x ti-am57xx x86-64-kvm-guest x86-kvm-guest xilinx-zynq