diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2016-04-13 11:49:07 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-20 15:39:40 +0200 |
| commit | c8eb3f6b9bc31abc0ab3230737fde1639c8b1ea6 (patch) | |
| tree | 4b599703a3e533993f3c1c49eeda650d74aacf92 /virt/kvm | |
| parent | a7e33ad9b25552b75a2523cc598db8bcd218ede5 (diff) | |
| download | linux-c8eb3f6b9bc31abc0ab3230737fde1639c8b1ea6.tar.bz2 | |
KVM: arm/arm64: vgic: Remove irq_phys_map from interface
Now that the virtual arch timer does not care about the irq_phys_map
anymore, let's rework kvm_vgic_map_phys_irq() to return an error
value instead. Any reference to that mapping can later be done by
passing the correct combination of VCPU and virtual IRQ number.
This makes the irq_phys_map handling completely private to the
VGIC code.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 7 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic.c | 15 |
2 files changed, 8 insertions, 14 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 458d4d8ce795..3232105e6afd 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -333,7 +333,6 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, const struct kvm_irq_level *irq) { struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; - struct irq_phys_map *map; struct irq_desc *desc; struct irq_data *data; int phys_irq; @@ -374,11 +373,7 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, * Tell the VGIC that the virtual interrupt is tied to a * physical interrupt. We do that once per VCPU. */ - map = kvm_vgic_map_phys_irq(vcpu, irq->irq, phys_irq); - if (WARN_ON(IS_ERR(map))) - return PTR_ERR(map); - - return 0; + return kvm_vgic_map_phys_irq(vcpu, irq->irq, phys_irq); } void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index a7e496abfca2..91d42a8a5f72 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1719,21 +1719,20 @@ static struct list_head *vgic_get_irq_phys_map_list(struct kvm_vcpu *vcpu, * the physical interrupt represented by @phys_irq. This mapping can be * established multiple times as long as the parameters are the same. * - * Returns a valid pointer on success, and an error pointer otherwise + * Returns 0 on success or an error value otherwise. */ -struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, - int virt_irq, int phys_irq) +int kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, int virt_irq, int phys_irq) { struct vgic_dist *dist = &vcpu->kvm->arch.vgic; struct list_head *root = vgic_get_irq_phys_map_list(vcpu, virt_irq); struct irq_phys_map *map; struct irq_phys_map_entry *entry; - + int ret = 0; /* Create a new mapping */ entry = kzalloc(sizeof(*entry), GFP_KERNEL); if (!entry) - return ERR_PTR(-ENOMEM); + return -ENOMEM; spin_lock(&dist->irq_phys_map_lock); @@ -1742,7 +1741,7 @@ struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, if (map) { /* Make sure this mapping matches */ if (map->phys_irq != phys_irq) - map = ERR_PTR(-EINVAL); + ret = -EINVAL; /* Found an existing, valid mapping */ goto out; @@ -1758,9 +1757,9 @@ out: spin_unlock(&dist->irq_phys_map_lock); /* If we've found a hit in the existing list, free the useless * entry */ - if (IS_ERR(map) || map != &entry->map) + if (ret || map != &entry->map) kfree(entry); - return map; + return ret; } static struct irq_phys_map *vgic_irq_map_search(struct kvm_vcpu *vcpu, |