diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index dddcd74..a457423 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -874,6 +874,8 @@
                    uint32_t *ecx, uint32_t *edx);
 int cpu_x86_register (CPUX86State *env, const char *cpu_model);
 void cpu_clear_apic_feature(CPUX86State *env);
+void host_cpuid(uint32_t function, uint32_t count,
+                uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx);
 
 /* helper.c */
 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,