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-rw-r--r--kvm/kernel/external-module-compat.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/kvm/kernel/external-module-compat.h b/kvm/kernel/external-module-compat.h
index 830c46436..79608730f 100644
--- a/kvm/kernel/external-module-compat.h
+++ b/kvm/kernel/external-module-compat.h
@@ -72,6 +72,28 @@ static inline int smp_call_function_single1(int cpu, void (*func)(void *info),
* The cpu hotplug stubs are broken if !CONFIG_CPU_HOTPLUG
*/
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,15)
+#define DEFINE_MUTEX(a) DECLARE_MUTEX(a)
+#define mutex_lock_interruptible(a) down_interruptible(a)
+#define mutex_unlock(a) up(a)
+#define mutex_lock(a) down(a)
+#define mutex_init(a) init_MUTEX(a)
+#define mutex_trylock(a) down_trylock(a)
+#define mutex semaphore
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
+#ifndef kzalloc
+#define kzalloc(size,flags) \
+({ \
+ void *__ret = kmalloc(size, flags); \
+ if (__ret)
+ memset(__ret, 0, size);
+ __ret;
+})
+#endif
+#endif
+
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,21)
#ifndef CONFIG_HOTPLUG_CPU