From 97e8f14b87c39052aeaf017b7e5aef1e329486a0 Mon Sep 17 00:00:00 2001
From: Ian Campbell <ian.campbell@xensource.com>
Date: Mon, 9 Jul 2007 11:29:39 +0100
Subject: Add hooks for a script to update kernel configuration after tree has
 been prepared. This is to support upstream sources which do not enable Xen in
 their default configurations.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
---
 buildconfigs/enable-xen-config     | 36 ++++++++++++++++++++++++++++++++++++
 buildconfigs/mk.linux-2.6-paravirt |  4 +++-
 buildconfigs/mk.linux-2.6-xen      |  4 ++++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 buildconfigs/enable-xen-config

(limited to 'buildconfigs')

diff --git a/buildconfigs/enable-xen-config b/buildconfigs/enable-xen-config
new file mode 100644
index 0000000000..b427a12d90
--- /dev/null
+++ b/buildconfigs/enable-xen-config
@@ -0,0 +1,36 @@
+#!/bin/sh
+
+set -ex
+
+if [ $# -ne 1 ] ; then
+	echo "Usage $(basename $0) <config-file>" 1>&2
+	exit 1
+fi
+
+CONFIG=$1
+
+setopt()
+{
+	OPTION=$1
+	VALUE=$2
+
+	# First remove any existing instances of this option
+	sed -e "s/^# ${OPTION} is not set$//g ; s/^^{OPTION}=.$//g" -i "${CONFIG}"
+
+	# Then append the new value
+	case ${VALUE} in
+	    y|m) echo "${OPTION}=${VALUE}" >> "${CONFIG}" ;;
+	    n)   echo "# ${OPTION} is not set" >> "${CONFIG}" ;;
+	    *)   echo "Invalid value ${VALUE} for ${OPTION}" 1>&2 ; exit 1 ;;
+	esac
+}
+
+setopt CONFIG_PARAVIRT y
+setopt CONFIG_XEN y
+setopt CONFIG_VMI y
+setopt CONFIG_LGUEST n
+setopt CONFIG_XEN_BLKDEV_FRONTEND y
+setopt CONFIG_XEN_NETDEV_FRONTEND y
+setopt CONFIG_HVC_XEN y
+
+exit 0
diff --git a/buildconfigs/mk.linux-2.6-paravirt b/buildconfigs/mk.linux-2.6-paravirt
index 4ff8d7b99b..a48da17600 100644
--- a/buildconfigs/mk.linux-2.6-paravirt
+++ b/buildconfigs/mk.linux-2.6-paravirt
@@ -8,6 +8,8 @@ IMAGE_TARGET ?= vmlinux bzImage
 
 XEN_LINUX_ALLOW_INTERFACE_MISMATCH := y
 
-EXTRAVERSION ?=
+XEN_LINUX_CONFIG_UPDATE := buildconfigs/enable-xen-config
+
+EXTRAVERSION ?= -paravirt
 
 include buildconfigs/mk.linux-2.6-xen
diff --git a/buildconfigs/mk.linux-2.6-xen b/buildconfigs/mk.linux-2.6-xen
index a0c6916349..4fd195b397 100644
--- a/buildconfigs/mk.linux-2.6-xen
+++ b/buildconfigs/mk.linux-2.6-xen
@@ -74,6 +74,10 @@ $(LINUX_DIR)/include/linux/autoconf.h: $(LINUX_SRCDIR)/.valid-src
 	else \
           echo "No configuration method found for this kernel" ; \
 	fi
+ifneq ($(XEN_LINUX_CONFIG_UPDATE),)
+	echo "Updating $(CONFIG_FILE) using $(XEN_LINUX_CONFIG_UPDATE)"
+	sh $(XEN_LINUX_CONFIG_UPDATE) $(CONFIG_FILE)
+endif
 ifeq ($(XEN_TARGET_ARCH),x86_32)
 ifeq ($(pae),y)
 	sed -e 's!^CONFIG_HIGHMEM4G=y$$!\# CONFIG_HIGHMEM4G is not set!;s!^\# CONFIG_HIGHMEM64G is not set$$!CONFIG_HIGHMEM64G=y!' $(CONFIG_FILE) > $(CONFIG_FILE)- && mv $(CONFIG_FILE)- $(CONFIG_FILE)
-- 
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