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KVM: arm/arm64: Remove redundant preemptible checks

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The __this_cpu_read() and __this_cpu_write() functions already implement
checks for the required preemption levels when using
CONFIG_DEBUG_PREEMPT which gives you nice error messages and such.
Therefore there is no need to explicitly check this using a BUG_ON() in
the code (which we don't do for other uses of per cpu variables either).

Acked-by: Marc Zyngier <[email protected]>
Reviewed-by: Andre Przywara <[email protected]>
Signed-off-by: Christoffer Dall <[email protected]>
This commit is contained in:
Christoffer Dall 2017-09-08 07:07:13 -07:00
commit 5a24575032
1 changed files with 0 additions and 2 deletions
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2
virt/kvm/arm/arm.c
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@ -71,7 +71,6 @@ static DEFINE_PER_CPU(unsigned char, kvm_arm_hardware_enabled);
static void kvm_arm_set_running_vcpu(struct kvm_vcpu *vcpu)
{
BUG_ON(preemptible());
__this_cpu_write(kvm_arm_running_vcpu, vcpu);
}
@ -81,7 +80,6 @@ static void kvm_arm_set_running_vcpu(struct kvm_vcpu *vcpu)
*/
struct kvm_vcpu *kvm_arm_get_running_vcpu(void)
{
BUG_ON(preemptible());
return __this_cpu_read(kvm_arm_running_vcpu);
}