[PATCH v2 06/54] KVM: arm/arm64: arch_timer: Remove irq_phys_map

[Eric Auger]

On 04/28/2016 06:45 PM, Andre Przywara wrote:
> Now that the interface between the arch timer and the VGIC does not
> require passing the irq_phys_map entry pointer anymore, let's remove
> it from the virtual arch timer and use the virtual IRQ number instead
> directly.
> The remaining pointer returned by kvm_vgic_map_phys_irq() will be
> removed in the following patch.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
> Changelog v1 .. v2:
> - remove extra virt_irq member from struct, instead use irq.irq directly
> 
>  include/kvm/arm_arch_timer.h |  3 ---
>  virt/kvm/arm/arch_timer.c    | 11 +++++------
>  2 files changed, 5 insertions(+), 9 deletions(-)
> 
> diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
> index b651aed..a47b7de 100644
> --- a/include/kvm/arm_arch_timer.h
> +++ b/include/kvm/arm_arch_timer.h
> @@ -53,9 +53,6 @@ struct arch_timer_cpu {
>  	/* Timer IRQ */
>  	struct kvm_irq_level		irq;
>  
> -	/* VGIC mapping */
> -	struct irq_phys_map		*map;
> -
>  	/* Active IRQ state caching */
>  	bool				active_cleared_last;
>  };
> diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
> index b470632..3a74b17 100644
> --- a/virt/kvm/arm/arch_timer.c
> +++ b/virt/kvm/arm/arch_timer.c
> @@ -175,10 +175,10 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level)
>  
>  	timer->active_cleared_last = false;
>  	timer->irq.level = new_level;
> -	trace_kvm_timer_update_irq(vcpu->vcpu_id, timer->map->virt_irq,
> +	trace_kvm_timer_update_irq(vcpu->vcpu_id, timer->irq.irq,
>  				   timer->irq.level);
>  	ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id,
> -					 timer->map->virt_irq,
> +					 timer->irq.irq,
>  					 timer->irq.level);
>  	WARN_ON(ret);
>  }
> @@ -276,7 +276,7 @@ void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu)
>  	* exit.
>  	*/
>  	phys_active = timer->irq.level ||
> -			kvm_vgic_map_is_active(vcpu, timer->map->virt_irq);
> +			kvm_vgic_map_is_active(vcpu, timer->irq.irq);
>  
>  	/*
>  	 * We want to avoid hitting the (re)distributor as much as
> @@ -378,7 +378,6 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
>  	if (WARN_ON(IS_ERR(map)))
>  		return PTR_ERR(map);
>  
> -	timer->map = map;
>  	return 0;
>  }
>  
> @@ -521,8 +520,8 @@ void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu)
>  	struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
>  
>  	timer_disarm(timer);
> -	if (timer->map)
> -		kvm_vgic_unmap_phys_irq(vcpu, timer->map->virt_irq);
> +	if (timer->irq.irq)
> +		kvm_vgic_unmap_phys_irq(vcpu, timer->irq.irq);
thought you agreed to always unmap. Is it an oversight or did you change
your mind?

Besides Reviewed-by: Eric Auger <eric.auger at linaro.org>

Cheers

Eric
>  }
>  
>  void kvm_timer_enable(struct kvm *kvm)
>