Do not allow translation to proceed beyond one insn with mmio,
as we will not be caching the TranslationBlock.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
/* Use slow path if first page is MMIO. */
if (unlikely(tb_page_addr0(tb) == -1)) {
+ /* We capped translation with first page MMIO in tb_gen_code. */
+ tcg_debug_assert(db->max_insns == 1);
return false;
}
if (unlikely(new_page1 == -1)) {
tb_unlock_pages(tb);
tb_set_page_addr0(tb, -1);
+ /* Require that this be the final insn. */
+ db->max_insns = db->num_insns;
return false;
}