[meta-virtualization] [RFC 1/3] xen: Create structure necessary to break Xen kernel config into dom0 / guest.

[Philip Tricca]

For now the config remains the same for both dom0 and guest
DISTRO_FEATURES. This work provides the structure for migrating
config options into the two different distro features as the need
arises.

Signed-off-by: Philip Tricca <flihp at twobit.us>

 create mode 100644 recipes-kernel/linux/linux-yocto/xen-common.cfg
 create mode 100644 recipes-kernel/linux/linux-yocto/xen-dom0.cfg
 create mode 100644 recipes-kernel/linux/linux-yocto/xen-dom0.scc
 create mode 100644 recipes-kernel/linux/linux-yocto/xen-guest.cfg
 create mode 100644 recipes-kernel/linux/linux-yocto/xen-guest.scc
 delete mode 100644 recipes-kernel/linux/linux-yocto/xen.cfg
 delete mode 100644 recipes-kernel/linux/linux-yocto/xen.scc

diff --git a/recipes-kernel/linux/linux-yocto/xen-common.cfg b/recipes-kernel/linux/linux-yocto/xen-common.cfg
new file mode 100644
index 0000000..4e796b9
--- /dev/null
+++ b/recipes-kernel/linux/linux-yocto/xen-common.cfg
@@ -0,0 +1,54 @@
+###
+# linux 3.4, 3.8
+CONFIG_PARAVIRT_GUEST=y
+###
+
+###
+# linux 3.10
+CONFIG_HYPERVISOR_GUEST=y
+###
+
+CONFIG_PARAVIRT=y
+CONFIG_XEN=y
+CONFIG_XEN_DOM0=y
+CONFIG_XEN_PRIVILEGED_GUEST=y
+CONFIG_XEN_PVHVM=y
+CONFIG_XEN_MAX_DOMAIN_MEMORY=500
+CONFIG_XEN_SAVE_RESTORE=y
+CONFIG_PARAVIRT_CLOCK=y
+CONFIG_HIBERNATE_CALLBACKS=y
+CONFIG_PCI_XEN=y
+CONFIG_XEN_PCIDEV_FRONTEND=y
+CONFIG_SYS_HYPERVISOR=y
+CONFIG_XEN_BLKDEV_FRONTEND=y
+CONFIG_XEN_BLKDEV_BACKEND=m
+CONFIG_XEN_NETDEV_FRONTEND=y
+CONFIG_XEN_NETDEV_BACKEND=m
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
+CONFIG_HVC_IRQ=y
+CONFIG_HVC_XEN=y
+CONFIG_HVC_XEN_FRONTEND=y
+CONFIG_XEN_WDT=m
+CONFIG_FB_SYS_FILLRECT=y
+CONFIG_FB_SYS_COPYAREA=y
+CONFIG_FB_SYS_IMAGEBLIT=y
+CONFIG_FB_SYS_FOPS=y
+CONFIG_FB_DEFERRED_IO=y
+CONFIG_XEN_FBDEV_FRONTEND=y
+CONFIG_XEN_BALLOON=y
+CONFIG_XEN_SCRUB_PAGES=y
+CONFIG_XEN_DEV_EVTCHN=y
+CONFIG_XEN_BACKEND=y
+CONFIG_XENFS=y
+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=y
+CONFIG_XEN_ACPI_PROCESSOR=m
+CONFIG_XEN_MCE_LOG=y
+CONFIG_XEN_HAVE_PVMMU=y
diff --git a/recipes-kernel/linux/linux-yocto/xen-dom0.cfg b/recipes-kernel/linux/linux-yocto/xen-dom0.cfg
new file mode 100644
index 0000000..e69de29
diff --git a/recipes-kernel/linux/linux-yocto/xen-dom0.scc b/recipes-kernel/linux/linux-yocto/xen-dom0.scc
new file mode 100644
index 0000000..a84b0cb
--- /dev/null
+++ b/recipes-kernel/linux/linux-yocto/xen-dom0.scc
@@ -0,0 +1,5 @@
+define KFEATURE_DESCRIPTION "Xen dom0 Kernel Support"
+define KFEATURE_COMPATIBILITY arch
+
+kconf non-hardware xen-common.cfg
+kconf non-hardware xen-dom0.cfg
diff --git a/recipes-kernel/linux/linux-yocto/xen-guest.cfg b/recipes-kernel/linux/linux-yocto/xen-guest.cfg
new file mode 100644
index 0000000..e69de29
diff --git a/recipes-kernel/linux/linux-yocto/xen-guest.scc b/recipes-kernel/linux/linux-yocto/xen-guest.scc
new file mode 100644
index 0000000..0edba0c
--- /dev/null
+++ b/recipes-kernel/linux/linux-yocto/xen-guest.scc
@@ -0,0 +1,5 @@
+define KFEATURE_DESCRIPTION "Xen Guest Kernel Support"
+define KFEATURE_COMPATIBILITY arch
+
+kconf non-hardware xen-common.cfg
+kconf non-hardware xen-guest.cfg
diff --git a/recipes-kernel/linux/linux-yocto/xen.cfg b/recipes-kernel/linux/linux-yocto/xen.cfg
deleted file mode 100644
index 4e796b9..0000000
--- a/recipes-kernel/linux/linux-yocto/xen.cfg
+++ /dev/null
@@ -1,54 +0,0 @@
-###
-# linux 3.4, 3.8
-CONFIG_PARAVIRT_GUEST=y
-###
-
-###
-# linux 3.10
-CONFIG_HYPERVISOR_GUEST=y
-###
-
-CONFIG_PARAVIRT=y
-CONFIG_XEN=y
-CONFIG_XEN_DOM0=y
-CONFIG_XEN_PRIVILEGED_GUEST=y
-CONFIG_XEN_PVHVM=y
-CONFIG_XEN_MAX_DOMAIN_MEMORY=500
-CONFIG_XEN_SAVE_RESTORE=y
-CONFIG_PARAVIRT_CLOCK=y
-CONFIG_HIBERNATE_CALLBACKS=y
-CONFIG_PCI_XEN=y
-CONFIG_XEN_PCIDEV_FRONTEND=y
-CONFIG_SYS_HYPERVISOR=y
-CONFIG_XEN_BLKDEV_FRONTEND=y
-CONFIG_XEN_BLKDEV_BACKEND=m
-CONFIG_XEN_NETDEV_FRONTEND=y
-CONFIG_XEN_NETDEV_BACKEND=m
-CONFIG_INPUT_MISC=y
-CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
-CONFIG_HVC_IRQ=y
-CONFIG_HVC_XEN=y
-CONFIG_HVC_XEN_FRONTEND=y
-CONFIG_XEN_WDT=m
-CONFIG_FB_SYS_FILLRECT=y
-CONFIG_FB_SYS_COPYAREA=y
-CONFIG_FB_SYS_IMAGEBLIT=y
-CONFIG_FB_SYS_FOPS=y
-CONFIG_FB_DEFERRED_IO=y
-CONFIG_XEN_FBDEV_FRONTEND=y
-CONFIG_XEN_BALLOON=y
-CONFIG_XEN_SCRUB_PAGES=y
-CONFIG_XEN_DEV_EVTCHN=y
-CONFIG_XEN_BACKEND=y
-CONFIG_XENFS=y
-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=y
-CONFIG_XEN_ACPI_PROCESSOR=m
-CONFIG_XEN_MCE_LOG=y
-CONFIG_XEN_HAVE_PVMMU=y
diff --git a/recipes-kernel/linux/linux-yocto/xen.scc b/recipes-kernel/linux/linux-yocto/xen.scc
deleted file mode 100644
index b588e5d..0000000
--- a/recipes-kernel/linux/linux-yocto/xen.scc
+++ /dev/null
@@ -1,4 +0,0 @@
-define KFEATURE_DESCRIPTION "Xen Kernel Support"
-define KFEATURE_COMPATIBILITY arch
-
-kconf non-hardware xen.cfg
diff --git a/recipes-kernel/linux/linux-yocto_3.10.bbappend b/recipes-kernel/linux/linux-yocto_3.10.bbappend
index c029c05..e4ae462 100644
--- a/recipes-kernel/linux/linux-yocto_3.10.bbappend
+++ b/recipes-kernel/linux/linux-yocto_3.10.bbappend
@@ -16,4 +16,8 @@ module_autoload_kvm-intel = "kvm-intel"
 KERNEL_FEATURES_append += "${@base_contains('DISTRO_FEATURES', 'aufs', ' features/aufs/aufs-enable.scc', '', d)}"
 
 # xen kernel support
-SRC_URI += "${@base_contains('DISTRO_FEATURES', 'xen', ' file://xen.scc', '', d)}"
+SRC_URI += " \
+    ${@base_contains('DISTRO_FEATURES', 'xen-dom0', ' file://xen-dom0.scc', '', d)} \
+    ${@base_contains('DISTRO_FEATURES', 'xen-guest', ' file://xen-guest.scc', '', d)} \
+"
+
-- 
1.7.10.4