diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 35b0c121bb65..388d442eecb5 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -140,8 +140,8 @@ struct vgic_dist { /* Interrupt enabled (one bit per IRQ) */ struct vgic_bitmap irq_enabled; - /* Interrupt 'pin' level */ - struct vgic_bitmap irq_state; + /* Interrupt state is pending on the distributor */ + struct vgic_bitmap irq_pending; /* Level-triggered interrupt in progress */ struct vgic_bitmap irq_active; diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index eeb23b37f87c..7e86a36f3fc5 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -37,7 +37,7 @@ * * - At any time, the dist->irq_pending_on_cpu is the oracle that knows if * something is pending - * - VGIC pending interrupts are stored on the vgic.irq_state vgic + * - VGIC pending interrupts are stored on the vgic.irq_pending vgic * bitmap (this bitmap is updated by both user land ioctls and guest * mmio ops, and other in-kernel peripherals such as the * arch. timers) and indicate the 'wire' state. @@ -45,8 +45,8 @@ * recalculated * - To calculate the oracle, we need info for each cpu from * compute_pending_for_cpu, which considers: - * - PPI: dist->irq_state & dist->irq_enable - * - SPI: dist->irq_state & dist->irq_enable & dist->irq_spi_target + * - PPI: dist->irq_pending & dist->irq_enable + * - SPI: dist->irq_pending & dist->irq_enable & dist->irq_spi_target * - irq_spi_target is a 'formatted' version of the GICD_ICFGR * registers, stored on each vcpu. We only keep one bit of * information per interrupt, making sure that only one vcpu can @@ -221,21 +221,21 @@ static int vgic_dist_irq_is_pending(struct kvm_vcpu *vcpu, int irq) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; - return vgic_bitmap_get_irq_val(&dist->irq_state, vcpu->vcpu_id, irq); + return vgic_bitmap_get_irq_val(&dist->irq_pending, vcpu->vcpu_id, irq); } -static void vgic_dist_irq_set(struct kvm_vcpu *vcpu, int irq) +static void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; - vgic_bitmap_set_irq_val(&dist->irq_state, vcpu->vcpu_id, irq, 1); + vgic_bitmap_set_irq_val(&dist->irq_pending, vcpu->vcpu_id, irq, 1); } -static void vgic_dist_irq_clear(struct kvm_vcpu *vcpu, int irq) +static void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; - vgic_bitmap_set_irq_val(&dist->irq_state, vcpu->vcpu_id, irq, 0); + vgic_bitmap_set_irq_val(&dist->irq_pending, vcpu->vcpu_id, irq, 0); } static void vgic_cpu_irq_set(struct kvm_vcpu *vcpu, int irq) @@ -409,7 +409,7 @@ static bool handle_mmio_set_pending_reg(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio, phys_addr_t offset) { - u32 *reg = vgic_bitmap_get_reg(&vcpu->kvm->arch.vgic.irq_state, + u32 *reg = vgic_bitmap_get_reg(&vcpu->kvm->arch.vgic.irq_pending, vcpu->vcpu_id, offset); vgic_reg_access(mmio, reg, offset, ACCESS_READ_VALUE | ACCESS_WRITE_SETBIT); @@ -425,7 +425,7 @@ static bool handle_mmio_clear_pending_reg(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio, phys_addr_t offset) { - u32 *reg = vgic_bitmap_get_reg(&vcpu->kvm->arch.vgic.irq_state, + u32 *reg = vgic_bitmap_get_reg(&vcpu->kvm->arch.vgic.irq_pending, vcpu->vcpu_id, offset); vgic_reg_access(mmio, reg, offset, ACCESS_READ_VALUE | ACCESS_WRITE_CLEARBIT); @@ -651,7 +651,7 @@ static void vgic_unqueue_irqs(struct kvm_vcpu *vcpu) * is fine, then we are only setting a few bits that were * already set. */ - vgic_dist_irq_set(vcpu, lr.irq); + vgic_dist_irq_set_pending(vcpu, lr.irq); if (lr.irq < VGIC_NR_SGIS) dist->irq_sgi_sources[vcpu_id][lr.irq] |= 1 << lr.source; lr.state &= ~LR_STATE_PENDING; @@ -932,7 +932,7 @@ static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg) kvm_for_each_vcpu(c, vcpu, kvm) { if (target_cpus & 1) { /* Flag the SGI as pending */ - vgic_dist_irq_set(vcpu, sgi); + vgic_dist_irq_set_pending(vcpu, sgi); dist->irq_sgi_sources[c][sgi] |= 1 << vcpu_id; kvm_debug("SGI%d from CPU%d to CPU%d\n", sgi, vcpu_id, c); } @@ -952,11 +952,11 @@ static int compute_pending_for_cpu(struct kvm_vcpu *vcpu) pend_percpu = vcpu->arch.vgic_cpu.pending_percpu; pend_shared = vcpu->arch.vgic_cpu.pending_shared; - pending = vgic_bitmap_get_cpu_map(&dist->irq_state, vcpu_id); + pending = vgic_bitmap_get_cpu_map(&dist->irq_pending, vcpu_id); enabled = vgic_bitmap_get_cpu_map(&dist->irq_enabled, vcpu_id); bitmap_and(pend_percpu, pending, enabled, VGIC_NR_PRIVATE_IRQS); - pending = vgic_bitmap_get_shared_map(&dist->irq_state); + pending = vgic_bitmap_get_shared_map(&dist->irq_pending); enabled = vgic_bitmap_get_shared_map(&dist->irq_enabled); bitmap_and(pend_shared, pending, enabled, VGIC_NR_SHARED_IRQS); bitmap_and(pend_shared, pend_shared, @@ -1160,7 +1160,7 @@ static bool vgic_queue_sgi(struct kvm_vcpu *vcpu, int irq) * our emulated gic and can get rid of them. */ if (!sources) { - vgic_dist_irq_clear(vcpu, irq); + vgic_dist_irq_clear_pending(vcpu, irq); vgic_cpu_irq_clear(vcpu, irq); return true; } @@ -1175,7 +1175,7 @@ static bool vgic_queue_hwirq(struct kvm_vcpu *vcpu, int irq) if (vgic_queue_irq(vcpu, 0, irq)) { if (vgic_irq_is_edge(vcpu, irq)) { - vgic_dist_irq_clear(vcpu, irq); + vgic_dist_irq_clear_pending(vcpu, irq); vgic_cpu_irq_clear(vcpu, irq); } else { vgic_irq_set_active(vcpu, irq); @@ -1376,7 +1376,7 @@ static void vgic_kick_vcpus(struct kvm *kvm) static int vgic_validate_injection(struct kvm_vcpu *vcpu, int irq, int level) { - int is_edge = vgic_irq_is_edge(vcpu, irq); + int edge_triggered = vgic_irq_is_edge(vcpu, irq); int state = vgic_dist_irq_is_pending(vcpu, irq); /* @@ -1384,26 +1384,26 @@ static int vgic_validate_injection(struct kvm_vcpu *vcpu, int irq, int level) * - edge triggered and we have a rising edge * - level triggered and we change level */ - if (is_edge) + if (edge_triggered) return level > state; else return level != state; } -static bool vgic_update_irq_state(struct kvm *kvm, int cpuid, +static bool vgic_update_irq_pending(struct kvm *kvm, int cpuid, unsigned int irq_num, bool level) { struct vgic_dist *dist = &kvm->arch.vgic; struct kvm_vcpu *vcpu; - int is_edge, is_level; + int edge_triggered, level_triggered; int enabled; bool ret = true; spin_lock(&dist->lock); vcpu = kvm_get_vcpu(kvm, cpuid); - is_edge = vgic_irq_is_edge(vcpu, irq_num); - is_level = !is_edge; + edge_triggered = vgic_irq_is_edge(vcpu, irq_num); + level_triggered = !edge_triggered; if (!vgic_validate_injection(vcpu, irq_num, level)) { ret = false; @@ -1418,9 +1418,9 @@ static bool vgic_update_irq_state(struct kvm *kvm, int cpuid, kvm_debug("Inject IRQ%d level %d CPU%d\n", irq_num, level, cpuid); if (level) - vgic_dist_irq_set(vcpu, irq_num); + vgic_dist_irq_set_pending(vcpu, irq_num); else - vgic_dist_irq_clear(vcpu, irq_num); + vgic_dist_irq_clear_pending(vcpu, irq_num); enabled = vgic_irq_is_enabled(vcpu, irq_num); @@ -1429,7 +1429,7 @@ static bool vgic_update_irq_state(struct kvm *kvm, int cpuid, goto out; } - if (is_level && vgic_irq_is_active(vcpu, irq_num)) { + if (level_triggered && vgic_irq_is_active(vcpu, irq_num)) { /* * Level interrupt in progress, will be picked up * when EOId. @@ -1466,7 +1466,7 @@ out: int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, bool level) { - if (vgic_update_irq_state(kvm, cpuid, irq_num, level)) + if (vgic_update_irq_pending(kvm, cpuid, irq_num, level)) vgic_kick_vcpus(kvm); return 0;