On 04/15/2016 04:04 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@xxxxxxx>
> ---
> include/kvm/arm_arch_timer.h | 4 ++--
> virt/kvm/arm/arch_timer.c | 12 ++++++------
> 2 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
> index b651aed..1ed70f6 100644
> --- a/include/kvm/arm_arch_timer.h
> +++ b/include/kvm/arm_arch_timer.h
> @@ -53,8 +53,8 @@ struct arch_timer_cpu {
> /* Timer IRQ */
> struct kvm_irq_level irq;
>
> - /* VGIC mapping */
> - struct irq_phys_map *map;
> + /* The virtual IRQ number */
> + unsigned int virt_irq;
what's the difference between irq.irq and virt_irq? aren't they duplicates?
>
> /* 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 cfdf88f..1598e23 100644
> --- a/virt/kvm/arm/arch_timer.c
> +++ b/virt/kvm/arm/arch_timer.c
> @@ -137,10 +137,10 @@ 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->virt_irq,
> timer->irq.level);
> ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id,
> - timer->map->virt_irq,
> + timer->virt_irq,
> timer->irq.level);
> WARN_ON(ret);
> }
> @@ -246,7 +246,7 @@ void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu)
> * to ensure that hardware interrupts from the timer triggers a guest
> * exit.
> */
> - if (timer->irq.level || kvm_vgic_map_is_active(vcpu, timer->map->virt_irq))
> + if (timer->irq.level || kvm_vgic_map_is_active(vcpu, timer->virt_irq))
> phys_active = true;
> else
> phys_active = false;
> @@ -351,7 +351,7 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
> if (WARN_ON(IS_ERR(map)))
> return PTR_ERR(map);
>
> - timer->map = map;
> + timer->virt_irq = irq->irq;
you also have a duplicate above:
timer->irq.irq = irq->irq;
> return 0;
> }
>
> @@ -494,8 +494,8 @@ 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->virt_irq)
> + kvm_vgic_unmap_phys_irq(vcpu, timer->virt_irq);
always unmap?
Cheers
Eric
> }
>
> void kvm_timer_enable(struct kvm *kvm)
>
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