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| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-07-08 13:09:02 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-09-19 03:48:56 +0200 |
| commit | fb65ab63b8cae510ea1e43e68b5da2f9980aa6d5 (patch) | |
| tree | 65b921f5021b04afdc09cdd64498d115ce1fb6dd /virt/kvm/arm | |
| parent | arm/arm64: KVM: vgic: switch to dynamic allocation (diff) | |
| download | linux-fb65ab63b8cae510ea1e43e68b5da2f9980aa6d5.tar.xz linux-fb65ab63b8cae510ea1e43e68b5da2f9980aa6d5.zip | |
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>
Diffstat (limited to 'virt/kvm/arm')
| -rw-r--r-- | virt/kvm/arm/vgic.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 08db8764496a..7d64dc242afc 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1086,11 +1086,17 @@ static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg) } } +static int vgic_nr_shared_irqs(struct vgic_dist *dist) +{ + return dist->nr_irqs - VGIC_NR_PRIVATE_IRQS; +} + static int compute_pending_for_cpu(struct kvm_vcpu *vcpu) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; unsigned long *pending, *enabled, *pend_percpu, *pend_shared; unsigned long pending_private, pending_shared; + int nr_shared = vgic_nr_shared_irqs(dist); int vcpu_id; vcpu_id = vcpu->vcpu_id; @@ -1103,15 +1109,15 @@ static int compute_pending_for_cpu(struct kvm_vcpu *vcpu) 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, pending, enabled, nr_shared); bitmap_and(pend_shared, pend_shared, vgic_bitmap_get_shared_map(&dist->irq_spi_target[vcpu_id]), - VGIC_NR_SHARED_IRQS); + nr_shared); pending_private = find_first_bit(pend_percpu, VGIC_NR_PRIVATE_IRQS); - pending_shared = find_first_bit(pend_shared, VGIC_NR_SHARED_IRQS); + pending_shared = find_first_bit(pend_shared, nr_shared); return (pending_private < VGIC_NR_PRIVATE_IRQS || - pending_shared < VGIC_NR_SHARED_IRQS); + pending_shared < vgic_nr_shared_irqs(dist)); } /* @@ -1368,7 +1374,7 @@ static void __kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu) } /* SPIs */ - for_each_set_bit(i, vgic_cpu->pending_shared, VGIC_NR_SHARED_IRQS) { + for_each_set_bit(i, vgic_cpu->pending_shared, vgic_nr_shared_irqs(dist)) { if (!vgic_queue_hwirq(vcpu, i + VGIC_NR_PRIVATE_IRQS)) overflow = 1; } |