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arm/arm64: KVM: Clean up useless code in kvm_timer_enable 

1) Since commit:41a54482 changed timer enabled variable to per-vcpu,
   the correlative comment in kvm_timer_enable is useless now.

2) After the kvm module init successfully, the timecounter is always
   non-null, so we can remove the checking of timercounter.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Longpeng(Mike) 2016-11-09 10:50:14 +08:00 committed by Marc Zyngier
parent 2988509dd8
commit fd5ebf99f8
1 changed files with 1 additions and 11 deletions
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12
virt/kvm/arm/arch_timer.c
View File

@ -498,17 +498,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
if (ret)
return ret;
/*
* There is a potential race here between VCPUs starting for the first
* time, which may be enabling the timer multiple times. That doesn't
* hurt though, because we're just setting a variable to the same
* variable that it already was. The important thing is that all
* VCPUs have the enabled variable set, before entering the guest, if
* the arch timers are enabled.
*/
if (timecounter)
timer->enabled = 1;
timer->enabled = 1;
return 0;
}