On 4/15/21 9:24 AM, Alex Bennée wrote:
By definition a single instruction is capable of being an IO
instruction. This avoids a problem of triggering a cpu_io_recompile on
a non-recorded translation which then fails because it expects
tcg_tb_lookup() to succeed unconditionally. The normal use case
requires a TB to be able to resolve machine state.

The other users of tcg_tb_lookup() are able to tolerate a missing TB
if the machine state has been resolved by other means - which in the
single-shot case is always true because machine state is synced at the
start of a block.

Reported-by: Peter Maydell<peter.mayd...@linaro.org>
Signed-off-by: Alex Bennée<alex.ben...@linaro.org>
---
  accel/tcg/translate-all.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Richard Henderson <richard.hender...@linaro.org>

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