exec: introduce tlb_init

Paves the way for the addition of a per-TLB lock.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20181009174557.16125-4-cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 5f78125..815e5b1 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -100,6 +100,11 @@
 #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
 /* cputlb.c */
 /**
+ * tlb_init - initialize a CPU's TLB
+ * @cpu: CPU whose TLB should be initialized
+ */
+void tlb_init(CPUState *cpu);
+/**
  * tlb_flush_page:
  * @cpu: CPU whose TLB should be flushed
  * @addr: virtual address of page to be flushed
@@ -258,6 +263,9 @@
 void probe_write(CPUArchState *env, target_ulong addr, int size, int mmu_idx,
                  uintptr_t retaddr);
 #else
+static inline void tlb_init(CPUState *cpu)
+{
+}
 static inline void tlb_flush_page(CPUState *cpu, target_ulong addr)
 {
 }