diff options
Diffstat (limited to 'tcg/tcg-op.h')
| -rw-r--r-- | tcg/tcg-op.h | 9 |
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); |