Hi Feng, On 07/13/2015 11:47 AM, Feng Wu wrote: > From: Eric Auger <[email protected]> > > This patch adds the registration/unregistration of an > irq_bypass_consumer on irqfd assignment/deassignment. > > Signed-off-by: Eric Auger <[email protected]> > Signed-off-by: Feng Wu <[email protected]> > --- > virt/kvm/eventfd.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c > index 647ffb8..4225eea 100644 > --- a/virt/kvm/eventfd.c > +++ b/virt/kvm/eventfd.c > @@ -35,6 +35,7 @@ > #include <linux/srcu.h> > #include <linux/slab.h> > #include <linux/seqlock.h> > +#include <linux/irqbypass.h> > #include <trace/events/kvm.h> > > #include <kvm/iodev.h> > @@ -140,6 +141,7 @@ irqfd_shutdown(struct work_struct *work) > /* > * It is now safe to release the object's resources > */ > + irq_bypass_unregister_consumer(&irqfd->consumer); > eventfd_ctx_put(irqfd->eventfd); > kfree(irqfd); > } > @@ -380,6 +382,11 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args) > */ > fdput(f); > > + irqfd->consumer.token = (void *)irqfd->eventfd; > + kvm_arch_irq_consumer_init(&irqfd->consumer); what if the architecture does not implement kvm_arch_irq_consumer_init?
Also you are using here this single function kvm_arch_irq_consumer_init to do some irq bypass manager settings + attaching your irqfd->arch_update cb which does not really relate to IRQ bypass manager. I think I preferred the approach where start/top/add/del were exposed separately ([RFC v2 5/6] KVM: introduce kvm_arch functions for IRQ bypass). Why not adding another kvm_arch_irq_routing_update then, not necessarily linked to irq bypass manager. Best Regards Eric > + ret = irq_bypass_register_consumer(&irqfd->consumer); > + WARN_ON(ret); > + > return 0; > > fail: > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
