aboutsummaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
authorAndrey Smetanin <asmetanin@virtuozzo.com>2015-10-16 10:07:47 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-10-16 10:34:29 +0200
commitc9a5eccac1abf50649949f15754a7635f263a1ff (patch)
treec84abaa40f878ac85415eb0d71be3a34902b9827 /virt
parentba1aefcd6db5536d3eb3ca3ce7bd6786960140ea (diff)
downloadlinux-linaro-stable-c9a5eccac1abf50649949f15754a7635f263a1ff.tar.gz
kvm/eventfd: add arch-specific set_irq
Allow for arch-specific interrupt types to be set. For that, add kvm_arch_set_irq() which takes interrupt type-specific action if it recognizes the interrupt type given, and -EWOULDBLOCK otherwise. The default implementation always returns -EWOULDBLOCK. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: Roman Kagan <rkagan@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Vitaly Kuznetsov <vkuznets@redhat.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/eventfd.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index f6b986a41823..e29fd2640709 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -171,6 +171,15 @@ irqfd_deactivate(struct kvm_kernel_irqfd *irqfd)
queue_work(irqfd_cleanup_wq, &irqfd->shutdown);
}
+int __attribute__((weak)) kvm_arch_set_irq(
+ struct kvm_kernel_irq_routing_entry *irq,
+ struct kvm *kvm, int irq_source_id,
+ int level,
+ bool line_status)
+{
+ return -EWOULDBLOCK;
+}
+
/*
* Called with wqh->lock held and interrupts disabled
*/
@@ -195,7 +204,9 @@ irqfd_wakeup(wait_queue_t *wait, unsigned mode, int sync, void *key)
if (irq.type == KVM_IRQ_ROUTING_MSI)
kvm_set_msi(&irq, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1,
false);
- else
+ else if (kvm_arch_set_irq(&irq, kvm,
+ KVM_USERSPACE_IRQ_SOURCE_ID, 1,
+ false) == -EWOULDBLOCK)
schedule_work(&irqfd->inject);
srcu_read_unlock(&kvm->irq_srcu, idx);
}