diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 2 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic.c | 2 | ||||
| -rw-r--r-- | virt/kvm/vfio.c | 27 |
3 files changed, 22 insertions, 9 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 5081e809821f..22fa819a9b6a 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -277,7 +277,7 @@ int kvm_timer_hyp_init(void) host_vtimer_irq = ppi; - err = register_cpu_notifier(&kvm_timer_cpu_nb); + err = __register_cpu_notifier(&kvm_timer_cpu_nb); if (err) { kvm_err("Cannot register timer CPU notifier\n"); goto out_free; diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 8ca405cd7c1a..47b29834a6b6 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1496,7 +1496,7 @@ int kvm_vgic_hyp_init(void) goto out; } - ret = register_cpu_notifier(&vgic_cpu_nb); + ret = __register_cpu_notifier(&vgic_cpu_nb); if (ret) { kvm_err("Cannot register vgic CPU notifier\n"); goto out_free_irq; diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c index b4f9507ae650..ba1a93f935c7 100644 --- a/virt/kvm/vfio.c +++ b/virt/kvm/vfio.c @@ -59,6 +59,22 @@ static void kvm_vfio_group_put_external_user(struct vfio_group *vfio_group) symbol_put(vfio_group_put_external_user); } +static bool kvm_vfio_group_is_coherent(struct vfio_group *vfio_group) +{ + long (*fn)(struct vfio_group *, unsigned long); + long ret; + + fn = symbol_get(vfio_external_check_extension); + if (!fn) + return false; + + ret = fn(vfio_group, VFIO_DMA_CC_IOMMU); + + symbol_put(vfio_external_check_extension); + + return ret > 0; +} + /* * Groups can use the same or different IOMMU domains. If the same then * adding a new group may change the coherency of groups we've previously @@ -75,13 +91,10 @@ static void kvm_vfio_update_coherency(struct kvm_device *dev) mutex_lock(&kv->lock); list_for_each_entry(kvg, &kv->group_list, node) { - /* - * TODO: We need an interface to check the coherency of - * the IOMMU domain this group is using. For now, assume - * it's always noncoherent. - */ - noncoherent = true; - break; + if (!kvm_vfio_group_is_coherent(kvg->vfio_group)) { + noncoherent = true; + break; + } } if (noncoherent != kv->noncoherent) { |