diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-11-10 08:21:23 -0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-11-14 10:40:54 -0800 |
| commit | cf9b5790db77e5efdae589acff8a98165d2543e0 (patch) | |
| tree | 32fc0d820faedc785c4896770506fa814e8c96ea /docs/devel | |
| parent | 6d44474b3b47af21c7b01f3ad781373f1a6a2d78 (diff) | |
| download | focaccia-qemu-cf9b5790db77e5efdae589acff8a98165d2543e0.tar.gz focaccia-qemu-cf9b5790db77e5efdae589acff8a98165d2543e0.zip | |
accel/tcg: Remove CF_LAST_IO
In cpu_exec_step_atomic, we did not set CF_LAST_IO, which lead
to a loop with cpu_io_recompile.
But since 18a536f1f8 ("Always require can_do_io") we no longer
need a flag to indicate when the last insn should have can_do_io set,
so remove the flag entirely.
Reported-by: Clément Chigot <chigot@adacore.com>
Tested-by: Clément Chigot <chigot@adacore.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1961
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'docs/devel')
| -rw-r--r-- | docs/devel/tcg-icount.rst | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/docs/devel/tcg-icount.rst b/docs/devel/tcg-icount.rst index 50c8e8dabc..7df883446a 100644 --- a/docs/devel/tcg-icount.rst +++ b/docs/devel/tcg-icount.rst @@ -62,12 +62,6 @@ To deal with this case, when an I/O access is made we: - re-compile a single [1]_ instruction block for the current PC - exit the cpu loop and execute the re-compiled block -The new block is created with the CF_LAST_IO compile flag which -ensures the final instruction translation starts with a call to -gen_io_start() so we don't enter a perpetual loop constantly -recompiling a single instruction block. For translators using the -common translator_loop this is done automatically. - .. [1] sometimes two instructions if dealing with delay slots Other I/O operations |