[PATCH][TRIVIAL] Improve friendliness of misconfigured bootloader error

[Anthony Liguori <aliguori@us.ibm.com>]

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If a user specifies an improper grub.conf entry for Xen (does not 
specify a module line or mispells module), Xen outputs the following error:

   FATAL ERROR: Require at least one Multiboot module.

The attached patch changes this error to:

   FATAL ERROR: dom0 kernel not specified! Check bootloader configuration.

I've had a few people ask for help debugging this problem and usually 
they have no idea what a multiboot module is so the error is not helpful 
to them.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Regards,

Anthony Liguori

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--- xen/arch/x86/setup.c~	2005-06-22 14:45:43.000000000 -0500
+++ xen/arch/x86/setup.c	2005-06-22 22:33:13.331925064 -0500
@@ -262,7 +262,7 @@
     /* Check that we have at least one Multiboot module. */
     if ( !(mbi->flags & MBI_MODULES) || (mbi->mods_count == 0) )
     {
-        printk("FATAL ERROR: Require at least one Multiboot module.\n");
+        printk("FATAL ERROR: dom0 kernel not specified! Check bootloader configuration.\n");
         EARLY_FAIL();
     }
 

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