xen/bootup: allow {read|write}_cr8 pvops call.

[pandora-kernel.git] / arch / x86 / xen / enlighten.c

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 16378b4..69b9ef6 100644 (file)
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -818,7 +818,16 @@ static void xen_write_cr4(unsigned long cr4)
 
        native_write_cr4(cr4);
 }
-
+#ifdef CONFIG_X86_64
+static inline unsigned long xen_read_cr8(void)
+{
+       return 0;
+}
+static inline void xen_write_cr8(unsigned long val)
+{
+       BUG_ON(val);
+}
+#endif
 static int xen_write_msr_safe(unsigned int msr, unsigned low, unsigned high)
 {
        int ret;
@@ -987,6 +996,11 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
        .read_cr4_safe = native_read_cr4_safe,
        .write_cr4 = xen_write_cr4,
 
+#ifdef CONFIG_X86_64
+       .read_cr8 = xen_read_cr8,
+       .write_cr8 = xen_write_cr8,
+#endif
+
        .wbinvd = native_wbinvd,
 
        .read_msr = native_read_msr_safe,