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[Xen-devel] [PATCH v5 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper

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

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

   make xenconfig

on both x86 and arm64 kernels. This also splits out the
options which are available currently to be built with x86
and 'make ARCH=arm64' under a shared config.

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: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
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
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>
Acked-by: Michal Marek <mmarek@xxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxx>
 arch/x86/configs/xen.config | 14 ++++++++++++++
 kernel/configs/xen.config   | 32 ++++++++++++++++++++++++++++++++
 scripts/kconfig/Makefile    |  5 +++++
 3 files changed, 51 insertions(+)
 create mode 100644 arch/x86/configs/xen.config
 create mode 100644 kernel/configs/xen.config

diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config
new file mode 100644
index 0000000..fabad7f
--- /dev/null
+++ b/arch/x86/configs/xen.config
@@ -0,0 +1,14 @@
+# x86 xen specific config options
+# CONFIG_XEN_DEBUG_FS is not set
+# x86 specific backend drivers
+# x86 specific frontend drivers
diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config
new file mode 100644
index 0000000..9d23733
--- /dev/null
+++ b/kernel/configs/xen.config
@@ -0,0 +1,32 @@
+# generic config
+# backend drivers
+# frontend drivers
+# others
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 6950032..f52abae 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -115,6 +115,10 @@ PHONY += kvmconfig
 kvmconfig: kvm_guest.config
+PHONY += xenconfig
+xenconfig: xen.config
+       @:
 PHONY += tinyconfig
        $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
@@ -140,6 +144,7 @@ help:
        @echo  '  listnewconfig   - List new options'
        @echo  '  olddefconfig    - Same as silentoldconfig but sets new 
symbols to their default value'
        @echo  '  kvmconfig       - Enable additional options for kvm guest 
kernel support'
+       @echo  '  xenconfig       - Enable additional options for xen dom0 and 
guest kernel support'
        @echo  '  tinyconfig      - Configure the tiniest possible kernel'
 # lxdialog stuff

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