Adapt the interface between the virtualized arch timer and the emulated VGIC to avoid the phys_map when possible. This prepares the arch timer to go with both the existing VGIC implementation and the new version later without too many code changes.
Signed-off-by: Andre Przywara <[email protected]> --- include/kvm/arm_vgic.h | 7 ++++--- virt/kvm/arm/arch_timer.c | 11 +++++------ virt/kvm/arm/vgic.c | 18 +++++++++--------- 3 files changed, 18 insertions(+), 18 deletions(-) diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 2b89e27..7656a46 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -345,13 +345,14 @@ void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu); int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, bool level); int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, - struct irq_phys_map *map, bool level); + int virt_irq, bool level); void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg); int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu); struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, int virt_irq, int irq); -int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map); -bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, struct irq_phys_map *map); +int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map, + int virt_irq); +bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, int virt_irq); #define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel)) #define vgic_initialized(k) (!!((k)->arch.vgic.nr_cpus)) diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index a9ad4fe..74e3d4b 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->irq.irq, timer->irq.level); ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id, - timer->map, + timer->irq.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)) + if (timer->irq.level || kvm_vgic_map_is_active(vcpu, timer->irq.irq)) phys_active = true; else phys_active = false; @@ -274,7 +274,7 @@ void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu) if (timer->active_cleared_last && !phys_active) return; - ret = irq_set_irqchip_state(timer->map->irq, + ret = irq_set_irqchip_state(host_vtimer_irq, IRQCHIP_STATE_ACTIVE, phys_active); WARN_ON(ret); @@ -476,8 +476,7 @@ 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); + kvm_vgic_unmap_phys_irq(vcpu, timer->map, timer->irq.irq); } void kvm_timer_enable(struct kvm *kvm) diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 00429b3..079b0a7 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1103,18 +1103,18 @@ static bool dist_active_irq(struct kvm_vcpu *vcpu) return test_bit(vcpu->vcpu_id, dist->irq_active_on_cpu); } -bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, struct irq_phys_map *map) +bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, int virt_irq) { int i; for (i = 0; i < vcpu->arch.vgic_cpu.nr_lr; i++) { struct vgic_lr vlr = vgic_get_lr(vcpu, i); - if (vlr.irq == map->virt_irq && vlr.state & LR_STATE_ACTIVE) + if (vlr.irq == virt_irq && vlr.state & LR_STATE_ACTIVE) return true; } - return vgic_irq_is_active(vcpu, map->virt_irq); + return vgic_irq_is_active(vcpu, virt_irq); } /* @@ -1522,7 +1522,6 @@ static int vgic_validate_injection(struct kvm_vcpu *vcpu, int irq, int level) } static int vgic_update_irq_pending(struct kvm *kvm, int cpuid, - struct irq_phys_map *map, unsigned int irq_num, bool level) { struct vgic_dist *dist = &kvm->arch.vgic; @@ -1661,14 +1660,14 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, if (map) return -EINVAL; - return vgic_update_irq_pending(kvm, cpuid, NULL, irq_num, level); + return vgic_update_irq_pending(kvm, cpuid, irq_num, level); } /** * kvm_vgic_inject_mapped_irq - Inject a physically mapped IRQ to the vgic * @kvm: The VM structure pointer * @cpuid: The CPU for PPIs - * @map: Pointer to a irq_phys_map structure describing the mapping + * @virt_irq: The virtual IRQ to be injected * @level: Edge-triggered: true: to trigger the interrupt * false: to ignore the call * Level-sensitive true: raise the input signal @@ -1679,7 +1678,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, * being HIGH and 0 being LOW and all devices being active-HIGH. */ int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, - struct irq_phys_map *map, bool level) + int virt_irq, bool level) { int ret; @@ -1687,7 +1686,7 @@ int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, if (ret) return ret; - return vgic_update_irq_pending(kvm, cpuid, map, map->virt_irq, level); + return vgic_update_irq_pending(kvm, cpuid, virt_irq, level); } static irqreturn_t vgic_maintenance_handler(int irq, void *data) @@ -1818,7 +1817,8 @@ static void vgic_free_phys_irq_map_rcu(struct rcu_head *rcu) * * Remove an existing mapping between virtual and physical interrupts. */ -int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map) +int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map, + int virt_irq) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; struct irq_phys_map_entry *entry; -- 2.7.3 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
