From cfe90cf06084d5ce767a8bae0fb1e16809005b33 Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin.cormack@docker.com>
Date: Fri, 22 Jan 2016 17:37:07 +0000
Subject: [PATCH] WIP kexec script for testing on different hardware

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
---
 Dockerfile.remora  |  8 ++++++++
 Makefile           |  5 +++++
 remora/do-kexec.sh | 14 ++++++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 Dockerfile.remora
 create mode 100755 remora/do-kexec.sh

diff --git a/Dockerfile.remora b/Dockerfile.remora
new file mode 100644
index 000000000..144f89c94
--- /dev/null
+++ b/Dockerfile.remora
@@ -0,0 +1,8 @@
+FROM justincormack/alpine-kexec
+
+ADD alpine/initrd.img .
+ADD alpine/kernel/vmlinuz64 .
+
+ADD remora/do-kexec.sh /usr/local/bin
+
+ENTRYPOINT ["/usr/local/bin/do-kexec.sh"]
diff --git a/Makefile b/Makefile
index c7c38dc3e..4b5c94652 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,12 @@ qemu-arm: Dockerfile.armhf arm
 	docker build -f Dockerfile.qemu.armhf -t mobyarmqemu:build .
 	docker run -it mobyarmqemu:build
 
+.PHONY: remora clean
+remora: Dockerfile.remora remora/do-kexec.sh
+	docker build -f Dockerfile.remora -t justincormack/remora .
+
 clean:
 	$(MAKE) -C alpine clean
 	$(MAKE) -C xhyve clean
 	docker images -q mobyqemu:build | xargs docker rmi -f
+	docker images -q justincormack/remora | xargs docker rmi -f
diff --git a/remora/do-kexec.sh b/remora/do-kexec.sh
new file mode 100755
index 000000000..45893c633
--- /dev/null
+++ b/remora/do-kexec.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -ex
+
+APPEND="$*"
+
+[ -z "$*" ] && APPEND="$(cat /proc/cmdline)"
+
+gzip initrd.img
+
+mv initrd.img.gz vmlinuz64 /var/tmp
+
+kexec -f /var/tmp/vmlinuz64 --initrd=/var/tmp/initrd.img.gz --append="$APPEND"
+kexec -e