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-rw-r--r--tcg/tcg-op.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index ace39619ef..f217e80747 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -759,9 +759,12 @@ static inline void tcg_gen_exit_tb(uintptr_t val)
*
* See tcg/README for more info about this TCG operation.
*
- * NOTE: Direct jumps with goto_tb are only safe within the pages this TB
- * resides in because we don't take care of direct jumps when address mapping
- * changes, e.g. in tlb_flush().
+ * NOTE: In softmmu emulation, direct jumps with goto_tb are only safe within
+ * the pages this TB resides in because we don't take care of direct jumps when
+ * address mapping changes, e.g. in tlb_flush(). In user mode, there's only a
+ * static address translation, so the destination address is always valid, TBs
+ * are always invalidated properly, and direct jumps are reset when mapping
+ * changes.
*/
void tcg_gen_goto_tb(unsigned idx);