linux/virt/kvm/async_pf.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * kvm asynchronous fault support
 *
 * Copyright 2010 Red Hat, Inc.
 *
 * Author:
 *      Gleb Natapov <[email protected]>
 */

#include <linux/kvm_host.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mmu_context.h>
#include <linux/sched/mm.h>

#include "async_pf.h"
#include <trace/events/kvm.h>

static struct kmem_cache *async_pf_cache;

int kvm_async_pf_init(void)
{ … }

void kvm_async_pf_deinit(void)
{ … }

void kvm_async_pf_vcpu_init(struct kvm_vcpu *vcpu)
{ … }

static void async_pf_execute(struct work_struct *work)
{ … }

static void kvm_flush_and_free_async_pf_work(struct kvm_async_pf *work)
{ … }

void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu)
{ … }

void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu)
{ … }

/*
 * Try to schedule a job to handle page fault asynchronously. Returns 'true' on
 * success, 'false' on failure (page fault has to be handled synchronously).
 */
bool kvm_setup_async_pf(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
			unsigned long hva, struct kvm_arch_async_pf *arch)
{ … }

int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu)
{ … }