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tcg: Add CPUState cflags_next_tb

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We were generating code during tb_invalidate_phys_page_range,
check_watchpoint, cpu_io_recompile, and (seemingly) discarding
the TB, assuming that it would magically be picked up during
the next iteration through the cpu_exec loop.

Instead, record the desired cflags in CPUState so that we request
the proper TB so that there is no more magic.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2017-10-13 10:50:02 -07:00
parent 4e2ca83e71
commit 9b990ee5a3
5 changed files with 31 additions and 35 deletions
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qom/cpu.c
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@ -301,6 +301,7 @@ static void cpu_common_reset(CPUState *cpu)
cpu->can_do_io = 1;
cpu->exception_index = -1;
cpu->crash_occurred = false;
cpu->cflags_next_tb = -1;
if (tcg_enabled()) {
cpu_tb_jmp_cache_clear(cpu);