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diff --git a/recipes-core/vxn/vxn-initramfs-create_1.0.bb b/recipes-core/vxn/vxn-initramfs-create_1.0.bb
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+# SPDX-FileCopyrightText: Copyright (C) 2025 Bruce Ashfield
+#
+# SPDX-License-Identifier: MIT
+#
+# vxn-initramfs-create_1.0.bb
+# ===========================================================================
+# Builds Xen DomU boot blobs for vxn
+# ===========================================================================
+#
+# This recipe packages boot blobs for vxn (vcontainer on Xen):
+# - A tiny initramfs (reused from vdkr/vpdmn build)
+# - The rootfs.img squashfs (same as vdkr, with HV detection in init)
+# - The kernel (Xen PV-capable via vxn.cfg fragment in vruntime)
+#
+# Boot flow on Xen Dom0:
+#   xl create domain.cfg
+#   -> Xen boots kernel + tiny initramfs in DomU
+#   -> preinit detects Xen block prefix, mounts rootfs.img from /dev/xvda
+#   -> switch_root into rootfs.img
+#   -> vdkr-init.sh detects Xen via /proc/xen, uses xvd* devices
+#
+# ===========================================================================
+# BUILD INSTRUCTIONS
+# ===========================================================================
+#
+# For aarch64:
+#   MACHINE=qemuarm64 bitbake vxn-initramfs-create
+#
+# For x86_64:
+#   MACHINE=qemux86-64 bitbake vxn-initramfs-create
+#
+# Blobs are deployed to: tmp/deploy/images/${MACHINE}/vxn/
+#
+# ===========================================================================
+
+SUMMARY = "Build Xen DomU boot blobs for vxn"
+DESCRIPTION = "Packages kernel, initramfs and rootfs for running \
+               vcontainer workloads as Xen DomU guests."
+
+# Source blobs from vdkr (Docker) build - same rootfs works under Xen
+VXN_RUNTIME = "vdkr"
+
+require vxn-initramfs-create.inc