mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* irqfd: Allows an fd to be used to inject an interrupt to the guest.
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* ioeventfd: Allow an fd to be used to receive a signal from the guest.
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* All credit goes to kvm developers.
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*/
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#ifndef __LINUX_MSHV_EVENTFD_H
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#define __LINUX_MSHV_EVENTFD_H
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#include <linux/poll.h>
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#include "mshv.h"
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#include "mshv_root.h"
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/* struct to contain list of irqfds sharing an irq. Updates are protected by
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* partition.irqfds.resampler_lock
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*/
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struct mshv_irqfd_resampler {
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struct mshv_partition *rsmplr_partn;
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struct hlist_head rsmplr_irqfd_list;
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struct mshv_irq_ack_notifier rsmplr_notifier;
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struct hlist_node rsmplr_hnode;
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};
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struct mshv_irqfd {
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struct mshv_partition *irqfd_partn;
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struct eventfd_ctx *irqfd_eventfd_ctx;
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struct mshv_guest_irq_ent irqfd_girq_ent;
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seqcount_spinlock_t irqfd_irqe_sc;
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u32 irqfd_irqnum;
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struct mshv_lapic_irq irqfd_lapic_irq;
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struct hlist_node irqfd_hnode;
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poll_table irqfd_polltbl;
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wait_queue_head_t *irqfd_wqh;
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wait_queue_entry_t irqfd_wait;
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struct work_struct irqfd_shutdown;
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struct mshv_irqfd_resampler *irqfd_resampler;
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struct eventfd_ctx *irqfd_resamplefd;
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struct hlist_node irqfd_resampler_hnode;
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};
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void mshv_eventfd_init(struct mshv_partition *partition);
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void mshv_eventfd_release(struct mshv_partition *partition);
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void mshv_register_irq_ack_notifier(struct mshv_partition *partition,
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struct mshv_irq_ack_notifier *mian);
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void mshv_unregister_irq_ack_notifier(struct mshv_partition *partition,
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struct mshv_irq_ack_notifier *mian);
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bool mshv_notify_acked_gsi(struct mshv_partition *partition, int gsi);
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int mshv_set_unset_irqfd(struct mshv_partition *partition,
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struct mshv_user_irqfd *args);
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int mshv_irqfd_wq_init(void);
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void mshv_irqfd_wq_cleanup(void);
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struct mshv_ioeventfd {
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struct hlist_node iovntfd_hnode;
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u64 iovntfd_addr;
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int iovntfd_length;
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struct eventfd_ctx *iovntfd_eventfd;
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u64 iovntfd_datamatch;
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int iovntfd_doorbell_id;
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bool iovntfd_wildcard;
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};
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int mshv_set_unset_ioeventfd(struct mshv_partition *pt,
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struct mshv_user_ioeventfd *args);
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#endif /* __LINUX_MSHV_EVENTFD_H */
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