linux/include/linux/kvm_irqfd.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *
 * irqfd: Allows an fd to be used to inject an interrupt to the guest
 * Credit goes to Avi Kivity for the original idea.
 */

#ifndef __LINUX_KVM_IRQFD_H
#define __LINUX_KVM_IRQFD_H

#include <linux/kvm_host.h>
#include <linux/poll.h>

/*
 * Resampling irqfds are a special variety of irqfds used to emulate
 * level triggered interrupts.  The interrupt is asserted on eventfd
 * trigger.  On acknowledgment through the irq ack notifier, the
 * interrupt is de-asserted and userspace is notified through the
 * resamplefd.  All resamplers on the same gsi are de-asserted
 * together, so we don't need to track the state of each individual
 * user.  We can also therefore share the same irq source ID.
 */
struct kvm_kernel_irqfd_resampler { … };

struct kvm_kernel_irqfd { … };

#endif /* __LINUX_KVM_IRQFD_H */