62bcba836c
If a page table is in IO memory and lookup_tb_ptr probes the TLB it can result in a page table walk for the instruction fetch. If this hits IO memory and io_prepare falsely assumes it needs to do a TLB recompile. Avoid that by setting can_do_io at the start of lookup_tb_ptr. Link: https://lore.kernel.org/qemu-devel/CAFEAcA_a_AyQ=Epz3_+CheAT8Crsk9mOu894wbNW_FywamkZiw@mail.gmail.com/#t Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Message-Id: <20240219173153.12114-2-Jonathan.Cameron@huawei.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>