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accel/tcg: Precompute curr_cflags into cpu->tcg_cflags

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The primary motivation is to remove a dozen insns along
the fast-path in tb_lookup.  As a byproduct, this allows
us to completely remove parallel_cpus.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-03-01 19:21:08 -08:00
parent 872ebd884d
commit 6cc9d67c6f
11 changed files with 30 additions and 27 deletions
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3
accel/tcg/tcg-accel-ops-mttcg.c
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@ -114,8 +114,7 @@ void mttcg_start_vcpu_thread(CPUState *cpu)
char thread_name[VCPU_THREAD_NAME_SIZE];
g_assert(tcg_enabled());
parallel_cpus = (current_machine->smp.max_cpus > 1);
tcg_cpu_init_cflags(cpu, current_machine->smp.max_cpus > 1);
cpu->thread = g_malloc0(sizeof(QemuThread));
cpu->halt_cond = g_malloc0(sizeof(QemuCond));