arm/arm64: KVM: vgic: Parametrize VGIC_NR_SHARED_IRQS
Having a dynamic number of supported interrupts means that we cannot relly on VGIC_NR_SHARED_IRQS being fixed anymore. Instead, make it take the distributor structure as a parameter, so it can return the right value. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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@ -29,7 +29,6 @@
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#define VGIC_NR_SGIS 16
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#define VGIC_NR_PPIS 16
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#define VGIC_NR_PRIVATE_IRQS (VGIC_NR_SGIS + VGIC_NR_PPIS)
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#define VGIC_NR_SHARED_IRQS (VGIC_NR_IRQS - VGIC_NR_PRIVATE_IRQS)
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#define VGIC_MAX_CPUS KVM_MAX_VCPUS
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#define VGIC_V2_MAX_LRS (1 << 6)
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@ -1086,11 +1086,17 @@ static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg)
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}
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}
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static int vgic_nr_shared_irqs(struct vgic_dist *dist)
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{
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return dist->nr_irqs - VGIC_NR_PRIVATE_IRQS;
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}
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static int compute_pending_for_cpu(struct kvm_vcpu *vcpu)
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{
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struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
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unsigned long *pending, *enabled, *pend_percpu, *pend_shared;
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unsigned long pending_private, pending_shared;
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int nr_shared = vgic_nr_shared_irqs(dist);
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int vcpu_id;
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vcpu_id = vcpu->vcpu_id;
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@ -1103,15 +1109,15 @@ static int compute_pending_for_cpu(struct kvm_vcpu *vcpu)
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pending = vgic_bitmap_get_shared_map(&dist->irq_pending);
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enabled = vgic_bitmap_get_shared_map(&dist->irq_enabled);
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bitmap_and(pend_shared, pending, enabled, VGIC_NR_SHARED_IRQS);
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bitmap_and(pend_shared, pending, enabled, nr_shared);
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bitmap_and(pend_shared, pend_shared,
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vgic_bitmap_get_shared_map(&dist->irq_spi_target[vcpu_id]),
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VGIC_NR_SHARED_IRQS);
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nr_shared);
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pending_private = find_first_bit(pend_percpu, VGIC_NR_PRIVATE_IRQS);
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pending_shared = find_first_bit(pend_shared, VGIC_NR_SHARED_IRQS);
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pending_shared = find_first_bit(pend_shared, nr_shared);
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return (pending_private < VGIC_NR_PRIVATE_IRQS ||
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pending_shared < VGIC_NR_SHARED_IRQS);
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pending_shared < vgic_nr_shared_irqs(dist));
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}
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/*
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@ -1368,7 +1374,7 @@ static void __kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu)
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}
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/* SPIs */
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for_each_set_bit(i, vgic_cpu->pending_shared, VGIC_NR_SHARED_IRQS) {
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for_each_set_bit(i, vgic_cpu->pending_shared, vgic_nr_shared_irqs(dist)) {
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if (!vgic_queue_hwirq(vcpu, i + VGIC_NR_PRIVATE_IRQS))
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overflow = 1;
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}
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