LXR linux/arch/x86/kvm/hyperv.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * KVM Microsoft Hyper-V emulation
   4 *
   5 * derived from arch/x86/kvm/x86.c
   6 *
   7 * Copyright (C) 2006 Qumranet, Inc.
   8 * Copyright (C) 2008 Qumranet, Inc.
   9 * Copyright IBM Corporation, 2008
  10 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
  11 * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
  12 *
  13 * Authors:
  14 *   Avi Kivity   <avi@qumranet.com>
  15 *   Yaniv Kamay  <yaniv@qumranet.com>
  16 *   Amit Shah    <amit.shah@qumranet.com>
  17 *   Ben-Ami Yassour <benami@il.ibm.com>
  18 *   Andrey Smetanin <asmetanin@virtuozzo.com>
  19 */
  20
  21#ifndef __ARCH_X86_KVM_HYPERV_H__
  22#define __ARCH_X86_KVM_HYPERV_H__
  23
  24#include <linux/kvm_host.h>
  25
  26static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
  27{
  28        return &vcpu->arch.hyperv;
  29}
  30
  31static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
  32{
  33        struct kvm_vcpu_arch *arch;
  34
  35        arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
  36        return container_of(arch, struct kvm_vcpu, arch);
  37}
  38
  39static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
  40{
  41        return &vcpu->arch.hyperv.synic;
  42}
  43
  44static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
  45{
  46        return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
  47}
  48
  49int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
  50int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host);
  51
  52bool kvm_hv_hypercall_enabled(struct kvm *kvm);
  53int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
  54
  55void kvm_hv_irq_routing_update(struct kvm *kvm);
  56int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
  57void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
  58int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);
  59
  60void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
  61void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu);
  62void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
  63
  64bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu);
  65bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu,
  66                            struct hv_vp_assist_page *assist_page);
  67
  68static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
  69                                                        int timer_index)
  70{
  71        return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
  72}
  73
  74static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
  75{
  76        struct kvm_vcpu_hv *hv_vcpu;
  77
  78        hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
  79                               stimer[0]);
  80        return hv_vcpu_to_vcpu(hv_vcpu);
  81}
  82
  83static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
  84{
  85        return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
  86                             HV_SYNIC_STIMER_COUNT);
  87}
  88
  89void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
  90
  91void kvm_hv_setup_tsc_page(struct kvm *kvm,
  92                           struct pvclock_vcpu_time_info *hv_clock);
  93
  94void kvm_hv_init_vm(struct kvm *kvm);
  95void kvm_hv_destroy_vm(struct kvm *kvm);
  96int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
  97int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
  98                                struct kvm_cpuid_entry2 __user *entries);
  99
 100#endif
 101