[PATCH 2/3] x86, platform, xen, kconfig: add xen defconfig helper

From: Luis R. Rodriguez
Date: Fri Jun 06 2014 - 19:11:28 EST

From: "Luis R. Rodriguez" <mcgrof@xxxxxxxx>

This lets you build a kernel which can support xen dom0
or xen gusets by just using:

make xenconfig

Technically xen supports a dom0 kernel and also a guest
kernel configuration but upon review with the xen team
since we don't have many dom0 options its best to just
combine these two into one.

Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Michal Marek <mmarek@xxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: penberg@xxxxxxxxxx
Cc: levinsasha928@xxxxxxxxx
Cc: mtosatti@xxxxxxxxxx
Cc: fengguang.wu@xxxxxxxxx
Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxx>
arch/x86/Makefile | 7 +++++++
arch/x86/configs/xen.config | 36 ++++++++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+)
create mode 100644 arch/x86/configs/xen.config

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 37621ac..9db34e2 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -256,6 +256,12 @@ kvmconfig:
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(srctree)/arch/x86/configs/kvm_guest.config
$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig

+PHONY += xenconfig
+ $(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config $(srctree)/arch/x86/configs/xen.config
+ $(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
define archhelp
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
@@ -270,4 +276,5 @@ define archhelp
echo ' FDARGS="..." arguments for the booted kernel'
echo ' FDINITRD=file initrd for the booted kernel'
echo ' kvmconfig - Enable additional options for kvm guest kernel support'
+ echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config
new file mode 100644
index 0000000..fbfbe5c
--- /dev/null
+++ b/arch/x86/configs/xen.config
@@ -0,0 +1,36 @@
+# CONFIG_XEN_DEBUG_FS is not set

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