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 104