From: Avi Kivity <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/kernel/external-module-compat.c b/kernel/external-module-compat.c
index 7b0b983..1eca5fc 100644
--- a/kernel/external-module-compat.c
+++ b/kernel/external-module-compat.c
@@ -77,3 +77,32 @@ int kvm_smp_call_function_single(int cpu, void (*func)(void
*info),
#define smp_call_function_single kvm_smp_call_function_single
#endif
+
+/* div64_64 is fairly new */
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
+
+#ifndef CONFIG_64BIT
+
+/* 64bit divisor, dividend and result. dynamic precision */
+uint64_t div64_64(uint64_t dividend, uint64_t divisor)
+{
+ uint32_t high, d;
+
+ high = divisor >> 32;
+ if (high) {
+ unsigned int shift = fls(high);
+
+ d = divisor >> shift;
+ dividend >>= shift;
+ } else
+ d = divisor;
+
+ do_div(dividend, d);
+
+ return dividend;
+}
+
+#endif
+
+#endif
+
diff --git a/kernel/external-module-compat.h b/kernel/external-module-compat.h
index acc7a03..8723ae3 100644
--- a/kernel/external-module-compat.h
+++ b/kernel/external-module-compat.h
@@ -332,24 +332,7 @@ static inline uint64_t div64_64(uint64_t dividend,
uint64_t divisor)
#else
-/* 64bit divisor, dividend and result. dynamic precision */
-static inline uint64_t div64_64(uint64_t dividend, uint64_t divisor)
-{
- uint32_t high, d;
-
- high = divisor >> 32;
- if (high) {
- unsigned int shift = fls(high);
-
- d = divisor >> shift;
- dividend >>= shift;
- } else
- d = divisor;
-
- do_div(dividend, d);
-
- return dividend;
-}
+uint64_t div64_64(uint64_t dividend, uint64_t divisor);
#endif
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