arch/x86/kvm/hyperv.h

   1 /*
   2  * KVM Microsoft Hyper-V emulation
   3  *
   4  * derived from arch/x86/kvm/x86.c
   5  *
   6  * Copyright (C) 2006 Qumranet, Inc.
   7  * Copyright (C) 2008 Qumranet, Inc.
   8  * Copyright IBM Corporation, 2008
   9  * Copyright 2010 Red Hat, Inc. and/or its affiliates.
  10  * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
  11  *
  12  * Authors:
  13  *   Avi Kivity   <avi@qumranet.com>
  14  *   Yaniv Kamay  <yaniv@qumranet.com>
  15  *   Amit Shah    <amit.shah@qumranet.com>
  16  *   Ben-Ami Yassour <benami@il.ibm.com>
  17  *   Andrey Smetanin <asmetanin@virtuozzo.com>
  18  *
  19  * This work is licensed under the terms of the GNU GPL, version 2.  See
  20  * the COPYING file in the top-level directory.
  21  *
  22  */
  23
  24 #ifndef __ARCH_X86_KVM_HYPERV_H__
  25 #define __ARCH_X86_KVM_HYPERV_H__
  26
  27 #include <linux/kvm_host.h>
  28
  29 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
  30 {
  31         return &vcpu->arch.hyperv;
  32 }
  33
  34 static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
  35 {
  36         struct kvm_vcpu_arch *arch;
  37
  38         arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
  39         return container_of(arch, struct kvm_vcpu, arch);
  40 }
  41
  42 static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
  43 {
  44         return &vcpu->arch.hyperv.synic;
  45 }
  46
  47 static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
  48 {
  49         return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
  50 }
  51
  52 int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
  53 int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host);
  54
  55 bool kvm_hv_hypercall_enabled(struct kvm *kvm);
  56 int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
  57
  58 void kvm_hv_irq_routing_update(struct kvm *kvm);
  59 int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
  60 void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
  61 int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);
  62
  63 void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
  64 void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu);
  65 void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
  66
  67 bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu);
  68 bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu,
  69                             struct hv_vp_assist_page *assist_page);
  70
  71 static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
  72                                                         int timer_index)
  73 {
  74         return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
  75 }
  76
  77 static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
  78 {
  79         struct kvm_vcpu_hv *hv_vcpu;
  80
  81         hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
  82                                stimer[0]);
  83         return hv_vcpu_to_vcpu(hv_vcpu);
  84 }
  85
  86 static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
  87 {
  88         return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
  89                              HV_SYNIC_STIMER_COUNT);
  90 }
  91
  92 void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
  93
  94 void kvm_hv_setup_tsc_page(struct kvm *kvm,
  95                            struct pvclock_vcpu_time_info *hv_clock);
  96
  97 void kvm_hv_init_vm(struct kvm *kvm);
  98 void kvm_hv_destroy_vm(struct kvm *kvm);
  99 int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
 100 int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
 101                                 struct kvm_cpuid_entry2 __user *entries);
 102
 103 #endif