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accel/tcg: Create queue_tb_flush from tb_flush

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Rename the function and remove the path which
performs the flush immediately.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-09-23 10:59:07 -07:00
parent 430014bee7
commit a9519a4615
3 changed files with 10 additions and 20 deletions
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11
accel/tcg/tb-maint.c
View file

@ -797,17 +797,12 @@ static void do_tb_flush(CPUState *cpu, run_on_cpu_data tb_flush_count)
}
}
void tb_flush(CPUState *cpu)
void queue_tb_flush(CPUState *cs)
{
if (tcg_enabled()) {
unsigned tb_flush_count = qatomic_read(&tb_ctx.tb_flush_count);
if (cpu_in_serial_context(cpu)) {
do_tb_flush(cpu, RUN_ON_CPU_HOST_INT(tb_flush_count));
} else {
async_safe_run_on_cpu(cpu, do_tb_flush,
RUN_ON_CPU_HOST_INT(tb_flush_count));
}
async_safe_run_on_cpu(cs, do_tb_flush,
RUN_ON_CPU_HOST_INT(tb_flush_count));
}
}

2
accel/tcg/translate-all.c
View file

@ -289,7 +289,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, TCGTBCPUState s)
tb = tcg_tb_alloc(tcg_ctx);
if (unlikely(!tb)) {
/* flush must be done */
tb_flush(cpu);
queue_tb_flush(cpu);
mmap_unlock();
/* Make the execution loop process the flush as soon as possible. */
cpu->exception_index = EXCP_INTERRUPT;

17
include/exec/tb-flush.h
View file

@ -24,19 +24,14 @@
void tb_flush__exclusive_or_serial(void);
/**
* tb_flush() - flush all translation blocks
* @cs: CPUState (must be valid, but treated as anonymous pointer)
* queue_tb_flush() - add flush to the cpu work queue
* @cs: CPUState
*
* Used to flush all the translation blocks in the system. Sometimes
* it is simpler to flush everything than work out which individual
* translations are now invalid and ensure they are not called
* anymore.
*
* tb_flush() takes care of running the flush in an exclusive context
* if it is not already running in one. This means no guest code will
* run until this complete.
* Flush all translation blocks the next time @cs processes the work queue.
* This should generally be followed by cpu_loop_exit(), so that the work
* queue is processed promptly.
*/
void tb_flush(CPUState *cs);
void queue_tb_flush(CPUState *cs);
void tcg_flush_jmp_cache(CPUState *cs);