Older set_debugreg macros did not allow to pass the register number as
constant (without additional typcasting). Catch this as the latest kvm
debug changes make use of this property.

Signed-off-by: Jan Kiszka <[EMAIL PROTECTED]>
---

 kernel/x86/external-module-compat.h |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/kernel/x86/external-module-compat.h 
b/kernel/x86/external-module-compat.h
index 1055050..5489f47 100644
--- a/kernel/x86/external-module-compat.h
+++ b/kernel/x86/external-module-compat.h
@@ -333,6 +333,16 @@ struct kvm_desc_ptr {
 #define FEATURE_CONTROL_VMXON_ENABLED  (1<<2)
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25) && defined(__x86_64__)
+
+#undef set_debugreg
+#define set_debugreg(value, register) \
+       __asm__("movq %0,%%db" #register \
+               : /* no output */ \
+               :"r" ((unsigned long)value))
+
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
 
 struct mtrr_var_range {

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