[BUILD] Fixup support for building upstream kernels.

In particular:
 - support merged x86 architecture. To facilitate this it made sense
   to encode some existing logic in shell scripts rather than
   increasing complicated make conditionals.
 - set CONFIG_PARAVIRT_GUEST=y which is required for newer kernels.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/buildconfigs/select-linux-image b/buildconfigs/select-linux-image
new file mode 100755
index 0000000000..07899f80e2
--- /dev/null
+++ b/buildconfigs/select-linux-image
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+ME=$(basename $0)
+
+if [ $# -lt 3 ] ; then
+    echo "usage: $ME <linux-build-directory> <linux-arch> <linux-targets...>" 1>&2
+    exit 1;
+fi
+
+LINUX_DIR=$1
+LINUX_ARCH=$2
+LINUX_TARGET=$3 # We don't care about second and subsequent targets
+
+case ${XEN_TARGET_ARCH} in
+    ia64)
+	IMAGE=${LINUX_DIR}/arch/ia64/hp/sim/boot/vmlinux.gz
+	;;
+    *)
+	if [ -f ${LINUX_DIR}/arch/${LINUX_ARCH}/boot/${LINUX_TARGET} ] ; then
+	    IMAGE=${LINUX_DIR}/arch/${LINUX_ARCH}/boot/${LINUX_TARGET}
+	elif [ -f ${LINUX_DIR}/${LINUX_TARGET} ] ; then
+	    IMAGE=${LINUX_DIR}/${LINUX_TARGET}
+	else
+	    echo "$ME: cannot determine Linux image to use for ${LINUX_ARCH} in ${LINUX_DIR}" 1>&2
+	    exit 1
+	fi
+	;;
+esac
+
+echo "$ME: ${IMAGE}" 1>&2
+echo ${IMAGE}
+
+exit 0