[RFC v1] x86, platform, xen, kconfig: add xen defconfig helpers

["Luis R. Rodriguez" <mcgrof@do-not-panic.com>]

From: "Luis R. Rodriguez" <mcgrof@suse.com>

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
---

Hey folks, shiny kvm has a shortcut 'make kvmconfig' on the
kernel, and I thought this was a good idea so wanted to add a
respective helper for xen. Contrary to kvm though we can have
a dom0 and a guest kernel configuration. As it is right now this
patch bundles the same exact options for both, but figured
folks might already have special configs for both different
types. What options would we want as default *upstream* for each
of these ?

Please note that since this is going upstream it makes no sense
to add things which are not upstream though.

Thanks,

  Luis

 arch/x86/Makefile                 | 12 ++++++++++++
 arch/x86/configs/xen_dom0.config  | 37 +++++++++++++++++++++++++++++++++++++
 arch/x86/configs/xen_guest.config | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 arch/x86/configs/xen_dom0.config
 create mode 100644 arch/x86/configs/xen_guest.config

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 33f71b0..8b2bada 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -256,6 +256,16 @@ 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
 
+xendom0config:
+	$(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_dom0.config
+	$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
+
+xenguestconfig:
+	$(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_guest.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 +280,6 @@ define archhelp
   echo  '                  FDARGS="..."  arguments for the booted kernel'
   echo  '                  FDINITRD=file initrd for the booted kernel'
   echo  '  kvmconfig	- Enable additional options for guest kernel support'
+  echo  '  xendom0config  - Enable additional options for xen dom0 kernel support'
+  echo  '  xenguestconfig - Enable additional options for xen guest kernel support'
 endef
diff --git a/arch/x86/configs/xen_dom0.config b/arch/x86/configs/xen_dom0.config
new file mode 100644
index 0000000..3f155e0
--- /dev/null
+++ b/arch/x86/configs/xen_dom0.config
@@ -0,0 +1,37 @@
+CONFIG_XEN=y
+CONFIG_XEN_DOM0=y
+CONFIG_XEN_PVHVM=y
+CONFIG_XEN_MAX_DOMAIN_MEMORY=500
+CONFIG_XEN_SAVE_RESTORE=y
+# CONFIG_XEN_DEBUG_FS is not set
+CONFIG_XEN_PVH=y
+CONFIG_PCI_XEN=y
+CONFIG_XEN_PCIDEV_FRONTEND=m
+CONFIG_XEN_BLKDEV_FRONTEND=m
+CONFIG_XEN_BLKDEV_BACKEND=m
+CONFIG_NETXEN_NIC=m
+CONFIG_XEN_NETDEV_FRONTEND=m
+CONFIG_XEN_NETDEV_BACKEND=m
+CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
+CONFIG_HVC_XEN=y
+CONFIG_HVC_XEN_FRONTEND=y
+# CONFIG_TCG_XEN is not set
+CONFIG_XEN_WDT=m
+CONFIG_XEN_FBDEV_FRONTEND=y
+CONFIG_XEN_BALLOON=y
+CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y
+CONFIG_XEN_SCRUB_PAGES=y
+CONFIG_XEN_DEV_EVTCHN=m
+CONFIG_XEN_BACKEND=y
+CONFIG_XENFS=m
+CONFIG_XEN_COMPAT_XENFS=y
+CONFIG_XEN_SYS_HYPERVISOR=y
+CONFIG_XEN_XENBUS_FRONTEND=y
+CONFIG_XEN_GNTDEV=m
+CONFIG_XEN_GRANT_DEV_ALLOC=m
+CONFIG_SWIOTLB_XEN=y
+CONFIG_XEN_PCIDEV_BACKEND=m
+CONFIG_XEN_PRIVCMD=m
+CONFIG_XEN_ACPI_PROCESSOR=m
+# CONFIG_XEN_MCE_LOG is not set
+CONFIG_XEN_HAVE_PVMMU=y
diff --git a/arch/x86/configs/xen_guest.config b/arch/x86/configs/xen_guest.config
new file mode 100644
index 0000000..3f155e0
--- /dev/null
+++ b/arch/x86/configs/xen_guest.config
@@ -0,0 +1,37 @@
+CONFIG_XEN=y
+CONFIG_XEN_DOM0=y
+CONFIG_XEN_PVHVM=y
+CONFIG_XEN_MAX_DOMAIN_MEMORY=500
+CONFIG_XEN_SAVE_RESTORE=y
+# CONFIG_XEN_DEBUG_FS is not set
+CONFIG_XEN_PVH=y
+CONFIG_PCI_XEN=y
+CONFIG_XEN_PCIDEV_FRONTEND=m
+CONFIG_XEN_BLKDEV_FRONTEND=m
+CONFIG_XEN_BLKDEV_BACKEND=m
+CONFIG_NETXEN_NIC=m
+CONFIG_XEN_NETDEV_FRONTEND=m
+CONFIG_XEN_NETDEV_BACKEND=m
+CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
+CONFIG_HVC_XEN=y
+CONFIG_HVC_XEN_FRONTEND=y
+# CONFIG_TCG_XEN is not set
+CONFIG_XEN_WDT=m
+CONFIG_XEN_FBDEV_FRONTEND=y
+CONFIG_XEN_BALLOON=y
+CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y
+CONFIG_XEN_SCRUB_PAGES=y
+CONFIG_XEN_DEV_EVTCHN=m
+CONFIG_XEN_BACKEND=y
+CONFIG_XENFS=m
+CONFIG_XEN_COMPAT_XENFS=y
+CONFIG_XEN_SYS_HYPERVISOR=y
+CONFIG_XEN_XENBUS_FRONTEND=y
+CONFIG_XEN_GNTDEV=m
+CONFIG_XEN_GRANT_DEV_ALLOC=m
+CONFIG_SWIOTLB_XEN=y
+CONFIG_XEN_PCIDEV_BACKEND=m
+CONFIG_XEN_PRIVCMD=m
+CONFIG_XEN_ACPI_PROCESSOR=m
+# CONFIG_XEN_MCE_LOG is not set
+CONFIG_XEN_HAVE_PVMMU=y
-- 
2.0.0.rc3.18.g00a5b79