On 04/10/2018 05:35 PM, Paolo Bonzini wrote:
> This is incorrect, "cpu->can_do_io" is 1 when not in tcg_qemu_tb_exec.
> In fact, in cpu_exec we have "cpu->can_do_io = 1;" immediately after
> siglongjmp, so I propose adding the same "cpu->can_do_io = 1;"
> assignment to cpu_exec_step_atomic.
Ooo,
On 09/04/2018 11:13, Pavel Dovgalyuk wrote:
> @@ -29,6 +29,7 @@ void cpu_loop_exit_noexc(CPUState *cpu)
> {
> /* XXX: restore cpu registers saved in host registers */
>
> +cpu->can_do_io = !use_icount;
> cpu->exception_index = -1;
> siglongjmp(cpu->jmp_env, 1);
> }
> @@
On 04/09/2018 07:13 PM, Pavel Dovgalyuk wrote:
> In icount mode instructions, that access io memory spaces in the middle
> of the translation blocks, invoke TB recompilation.
> After recompilation such instructions become last in the TB and are
> allowed to access io memory spaces.
> When the code
In icount mode instructions, that access io memory spaces in the middle
of the translation blocks, invoke TB recompilation.
After recompilation such instructions become last in the TB and are
allowed to access io memory spaces.
When the code includes instruction like i386 'xchg eax, 0xd080'
