tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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