1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.

//! Per-VM state.

use super::X86PartitionCapabilities;
use crate::state::state_trait;
use crate::state::HvRegisterState;
use crate::state::StateElement;
use hvdef::HvRegisterValue;
use hvdef::HvX64RegisterName;
use inspect::Inspect;
use mesh_protobuf::Protobuf;
use vm_topology::processor::x86::X86VpInfo;

#[repr(C)]
#[derive(Debug, Default, PartialEq, Eq, Protobuf, Inspect)]
#[mesh(package = "virt.x86")]
pub struct HypercallMsrs {
    #[mesh(1)]
    #[inspect(hex)]
    pub guest_os_id: u64,
    #[mesh(2)]
    #[inspect(hex)]
    pub hypercall: u64,
}

impl HvRegisterState<HvX64RegisterName, 2> for HypercallMsrs {
    fn names(&self) -> &'static [HvX64RegisterName; 2] {
        &[HvX64RegisterName::GuestOsId, HvX64RegisterName::Hypercall]
    }

    fn get_values<'a>(&self, it: impl Iterator<Item = &'a mut HvRegisterValue>) {
        for (dest, src) in it.zip([self.guest_os_id, self.hypercall]) {
            *dest = src.into();
        }
    }

    fn set_values(&mut self, it: impl Iterator<Item = HvRegisterValue>) {
        for (src, dest) in it.zip([&mut self.guest_os_id, &mut self.hypercall]) {
            *dest = src.as_u64();
        }
    }
}

impl StateElement<X86PartitionCapabilities, X86VpInfo> for HypercallMsrs {
    fn is_present(caps: &X86PartitionCapabilities) -> bool {
        caps.hv1
    }

    fn at_reset(_caps: &X86PartitionCapabilities, _vp_info: &X86VpInfo) -> Self {
        Self::default()
    }
}

#[repr(C)]
#[derive(Debug, Default, PartialEq, Eq, Protobuf, Inspect)]
#[mesh(package = "virt.x86")]
pub struct ReferenceTscPage {
    #[mesh(1)]
    #[inspect(hex)]
    pub tsc_reference_page: u64,
}

impl HvRegisterState<HvX64RegisterName, 1> for ReferenceTscPage {
    fn names(&self) -> &'static [HvX64RegisterName; 1] {
        &[HvX64RegisterName::ReferenceTsc]
    }

    fn get_values<'a>(&self, it: impl Iterator<Item = &'a mut HvRegisterValue>) {
        for (dest, src) in it.zip([self.tsc_reference_page]) {
            *dest = src.into();
        }
    }

    fn set_values(&mut self, it: impl Iterator<Item = HvRegisterValue>) {
        for (src, dest) in it.zip([&mut self.tsc_reference_page]) {
            *dest = src.as_u64();
        }
    }
}

impl StateElement<X86PartitionCapabilities, X86VpInfo> for ReferenceTscPage {
    fn is_present(caps: &X86PartitionCapabilities) -> bool {
        caps.hv1_reference_tsc_page
    }

    fn at_reset(_caps: &X86PartitionCapabilities, _vp_info: &X86VpInfo) -> Self {
        Self::default()
    }
}

#[repr(C)]
#[derive(Debug, Default, PartialEq, Eq, Protobuf, Inspect)]
#[mesh(package = "virt.x86")]
pub struct ReferenceTime {
    #[mesh(1)]
    #[inspect(hex)]
    pub value: u64,
}

impl HvRegisterState<HvX64RegisterName, 1> for ReferenceTime {
    fn names(&self) -> &'static [HvX64RegisterName; 1] {
        &[HvX64RegisterName::TimeRefCount]
    }

    fn get_values<'a>(&self, it: impl Iterator<Item = &'a mut HvRegisterValue>) {
        for (dest, src) in it.zip([self.value]) {
            *dest = src.into();
        }
    }

    fn set_values(&mut self, it: impl Iterator<Item = HvRegisterValue>) {
        for (src, dest) in it.zip([&mut self.value]) {
            *dest = src.as_u64();
        }
    }
}

impl StateElement<X86PartitionCapabilities, X86VpInfo> for ReferenceTime {
    fn is_present(caps: &X86PartitionCapabilities) -> bool {
        caps.hv1
    }

    fn at_reset(_caps: &X86PartitionCapabilities, _vp_info: &X86VpInfo) -> Self {
        Self { value: 0 }
    }

    fn can_compare(caps: &X86PartitionCapabilities) -> bool {
        caps.can_freeze_time
    }
}

state_trait!(
    "Access to per-VM state.",
    AccessVmState,
    X86PartitionCapabilities,
    X86VpInfo,
    VmSavedState,
    "virt.x86",
    (1, "hypercall", hypercall, set_hypercall, HypercallMsrs),
    (2, "reftime", reftime, set_reftime, ReferenceTime),
    (
        3,
        "reference_tsc_page",
        reference_tsc_page,
        set_reference_tsc_page,
        ReferenceTscPage,
    ),
);