[Xen-devel] [PATCH] linux: prevent non-Xen modules from loading in Xen kernel

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

.. and vice versa.

Inspired by Zach Amsden's functionally similar VMI patch.

As usual, written and tested on 2.6.24-rc7 and made apply to the 2.6.18
tree without further testing.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

Index: head-2008-01-08/drivers/xen/Kconfig
===================================================================
--- head-2008-01-08.orig/drivers/xen/Kconfig    2008-01-08 12:26:03.000000000 
+0100
+++ head-2008-01-08/drivers/xen/Kconfig 2008-01-08 14:56:58.000000000 +0100
@@ -13,7 +13,7 @@ config XEN
 if XEN
 config XEN_INTERFACE_VERSION
        hex
-       default 0x00030207
+       default 0x30207
 
 menu "XEN"
 
Index: head-2008-01-08/include/linux/vermagic.h
===================================================================
--- head-2008-01-08.orig/include/linux/vermagic.h       2006-11-29 
22:57:37.000000000 +0100
+++ head-2008-01-08/include/linux/vermagic.h    2008-01-08 15:01:52.000000000 
+0100
@@ -17,6 +17,11 @@
 #else
 #define MODULE_VERMAGIC_MODULE_UNLOAD ""
 #endif
+#ifdef CONFIG_XEN
+#define MODULE_VERMAGIC_XEN "Xen:" __stringify(CONFIG_XEN_INTERFACE_VERSION) " 
"
+#else
+#define MODULE_VERMAGIC_XEN
+#endif
 #ifndef MODULE_ARCH_VERMAGIC
 #define MODULE_ARCH_VERMAGIC ""
 #endif
@@ -24,5 +29,6 @@
 #define VERMAGIC_STRING                                                \
        UTS_RELEASE " "                                                 \
        MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT                     \
-       MODULE_VERMAGIC_MODULE_UNLOAD MODULE_ARCH_VERMAGIC              \
+       MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_XEN               \
+       MODULE_ARCH_VERMAGIC                                            \
        "gcc-" __stringify(__GNUC__) "." __stringify(__GNUC_MINOR__)




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