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| author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-10-16 10:07:47 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-16 10:34:29 +0200 |
| commit | c9a5eccac1abf50649949f15754a7635f263a1ff (patch) | |
| tree | c84abaa40f878ac85415eb0d71be3a34902b9827 /virt | |
| parent | ba1aefcd6db5536d3eb3ca3ce7bd6786960140ea (diff) | |
| download | linux-c9a5eccac1abf50649949f15754a7635f263a1ff.tar.gz linux-c9a5eccac1abf50649949f15754a7635f263a1ff.tar.bz2 linux-c9a5eccac1abf50649949f15754a7635f263a1ff.zip | |
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.c | 13 |
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); } |