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accel/tcg: Record singlestep_enabled in tb->cflags

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Set CF_SINGLE_STEP when single-stepping is enabled.
This avoids the need to flush all tb's when turning
single-stepping on or off.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-19 10:43:46 -10:00
parent d40c5c7976
commit c2ffd7549b
5 changed files with 8 additions and 15 deletions
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4
cpu.c
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@ -326,10 +326,6 @@ void cpu_single_step(CPUState *cpu, int enabled)
cpu->singlestep_enabled = enabled;
if (kvm_enabled()) {
kvm_update_guest_debug(cpu, 0);
} else {
/* must flush all the translated code to avoid inconsistencies */
/* XXX: only flush what is necessary */
tb_flush(cpu);
}
trace_breakpoint_singlestep(cpu->cpu_index, enabled);
}