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 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
  28 {
  29         return &vcpu->arch.hyperv;
  30 }
  31
  32 static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
  33 {
  34         struct kvm_vcpu_arch *arch;
  35
  36         arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
  37         return container_of(arch, struct kvm_vcpu, arch);
  38 }
  39
  40 static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
  41 {
  42         return &vcpu->arch.hyperv.synic;
  43 }
  44
  45 static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
  46 {
  47         return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
  48 }
  49
  50 int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
  51 int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
  52
  53 bool kvm_hv_hypercall_enabled(struct kvm *kvm);
  54 int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
  55
  56 void kvm_hv_irq_routing_update(struct kvm *kvm);
  57 int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
  58 void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
  59 int kvm_hv_activate_synic(struct kvm_vcpu *vcpu);
  60
  61 void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
  62 void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
  63
  64 static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
  65                                                         int timer_index)
  66 {
  67         return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
  68 }
  69
  70 static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
  71 {
  72         struct kvm_vcpu_hv *hv_vcpu;
  73
  74         hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
  75                                stimer[0]);
  76         return hv_vcpu_to_vcpu(hv_vcpu);
  77 }
  78
  79 static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
  80 {
  81         return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
  82                              HV_SYNIC_STIMER_COUNT);
  83 }
  84
  85 void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
  86
  87 #endif