commit 97349135fea7f0ba8464534433df3bfd1dc0e9a6
author Jeremy Fitzhardinge <jeremy@goop.org> Wed Jun 25 00:19:14 2008 -0400
committer Ingo Molnar <mingo@elte.hu> Tue Jul 08 13:11:03 2008 +0200
tree 7eb615f8c4b83a8327da92b96d95a44f8f54f101
parent d8d5900ef8afc562088f8470feeaf17c4747790f

x86/paravirt: add debugging for missing operations

Rather than just jumping to 0 when there's a missing operation, raise a BUG.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9441e46..67e5275 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -435,6 +435,13 @@
 
 endif
 
+config PARAVIRT_DEBUG
+       bool "paravirt-ops debugging"
+       depends on PARAVIRT && DEBUG_KERNEL
+       help
+         Enable to debug paravirt_ops internals.  Specifically, BUG if
+	 a paravirt_op is missing when it is called.
+
 config MEMTEST
 	bool "Memtest"
 	depends on X86_64