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target/arm: check CF_PARALLEL instead of parallel_cpus

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Thereby decoupling the resulting translated code from the current state
of the system.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota 2017-07-14 18:20:49 -04:00 • committed by Richard Henderson
parent c5a49c63fa
commit 2399d4e7ce
5 changed files with 68 additions and 21 deletions
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7
target/arm/op_helper.c
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@ -502,13 +502,6 @@ void HELPER(yield)(CPUARMState *env)
ARMCPU *cpu = arm_env_get_cpu(env);
CPUState *cs = CPU(cpu);
/* When running in MTTCG we don't generate jumps to the yield and
* WFE helpers as it won't affect the scheduling of other vCPUs.
* If we wanted to more completely model WFE/SEV so we don't busy
* spin unnecessarily we would need to do something more involved.
*/
g_assert(!parallel_cpus);
/* This is a non-trappable hint instruction that generally indicates
* that the guest is currently busy-looping. Yield control back to the
* top level loop so that a more deserving VCPU has a chance to run.