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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768/* 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 *kvm; /* * List of resampling struct _irqfd objects sharing this gsi. * RCU list modified under kvm->irqfds.resampler_lock */ struct list_head list; struct kvm_irq_ack_notifier notifier; /* * Entry in list of kvm->irqfd.resampler_list. Use for sharing * resamplers among irqfds on the same gsi. * RCU list modified under kvm->irqfds.resampler_lock */ struct list_head link;};
struct kvm_kernel_irqfd { /* Used for MSI fast-path */ struct kvm *kvm; wait_queue_entry_t wait; /* Update side is protected by irqfds.lock */ struct kvm_kernel_irq_routing_entry irq_entry; seqcount_spinlock_t irq_entry_sc; /* Used for level IRQ fast-path */ int gsi; struct work_struct inject; /* The resampler used by this irqfd (resampler-only) */ struct kvm_kernel_irqfd_resampler *resampler; /* Eventfd notified on resample (resampler-only) */ struct eventfd_ctx *resamplefd; /* Entry in list of irqfds for a resampler (resampler-only) */ struct list_head resampler_link; /* Used for setup/shutdown */ struct eventfd_ctx *eventfd; struct list_head list; struct work_struct shutdown; struct irq_bypass_consumer consumer; struct irq_bypass_producer *producer;
struct kvm_vcpu *irq_bypass_vcpu; struct list_head vcpu_list; void *irq_bypass_data;};
#endif /* __LINUX_KVM_IRQFD_H */