diff options
Diffstat (limited to 'include/linux/kvm_irqfd.h')
| -rw-r--r-- | include/linux/kvm_irqfd.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/include/linux/kvm_irqfd.h b/include/linux/kvm_irqfd.h deleted file mode 100644 index 0c1de05..0000000 --- a/include/linux/kvm_irqfd.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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. - * Accessed and modified under kvm->irqfds.resampler_lock - */ - struct list_head link; -}; - -struct kvm_kernel_irqfd { - /* Used for MSI fast-path */ - struct kvm *kvm; - wait_queue_t wait; - /* Update side is protected by irqfds.lock */ - struct kvm_kernel_irq_routing_entry irq_entry; - seqcount_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; - poll_table pt; - struct work_struct shutdown; - struct irq_bypass_consumer consumer; - struct irq_bypass_producer *producer; -}; - -#endif /* __LINUX_KVM_IRQFD_H */ |