1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * This file contains common definitions for working with Enlightened VMCS which
4 * are used both by Hyper-V on KVM and KVM on Hyper-V.
5 */
6 #ifndef __KVM_X86_VMX_HYPERV_EVMCS_H
7 #define __KVM_X86_VMX_HYPERV_EVMCS_H
8
9 #include <asm/hyperv-tlfs.h>
10
11 #include "capabilities.h"
12 #include "vmcs12.h"
13
14 #define KVM_EVMCS_VERSION 1
15
16 /*
17 * Enlightened VMCSv1 doesn't support these:
18 *
19 * POSTED_INTR_NV = 0x00000002,
20 * GUEST_INTR_STATUS = 0x00000810,
21 * APIC_ACCESS_ADDR = 0x00002014,
22 * POSTED_INTR_DESC_ADDR = 0x00002016,
23 * EOI_EXIT_BITMAP0 = 0x0000201c,
24 * EOI_EXIT_BITMAP1 = 0x0000201e,
25 * EOI_EXIT_BITMAP2 = 0x00002020,
26 * EOI_EXIT_BITMAP3 = 0x00002022,
27 * GUEST_PML_INDEX = 0x00000812,
28 * PML_ADDRESS = 0x0000200e,
29 * VM_FUNCTION_CONTROL = 0x00002018,
30 * EPTP_LIST_ADDRESS = 0x00002024,
31 * VMREAD_BITMAP = 0x00002026,
32 * VMWRITE_BITMAP = 0x00002028,
33 *
34 * TSC_MULTIPLIER = 0x00002032,
35 * PLE_GAP = 0x00004020,
36 * PLE_WINDOW = 0x00004022,
37 * VMX_PREEMPTION_TIMER_VALUE = 0x0000482E,
38 *
39 * Currently unsupported in KVM:
40 * GUEST_IA32_RTIT_CTL = 0x00002814,
41 */
42 #define EVMCS1_SUPPORTED_PINCTRL \
43 (PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR | \
44 PIN_BASED_EXT_INTR_MASK | \
45 PIN_BASED_NMI_EXITING | \
46 PIN_BASED_VIRTUAL_NMIS)
47
48 #define EVMCS1_SUPPORTED_EXEC_CTRL \
49 (CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR | \
50 CPU_BASED_HLT_EXITING | \
51 CPU_BASED_CR3_LOAD_EXITING | \
52 CPU_BASED_CR3_STORE_EXITING | \
53 CPU_BASED_UNCOND_IO_EXITING | \
54 CPU_BASED_MOV_DR_EXITING | \
55 CPU_BASED_USE_TSC_OFFSETTING | \
56 CPU_BASED_MWAIT_EXITING | \
57 CPU_BASED_MONITOR_EXITING | \
58 CPU_BASED_INVLPG_EXITING | \
59 CPU_BASED_RDPMC_EXITING | \
60 CPU_BASED_INTR_WINDOW_EXITING | \
61 CPU_BASED_CR8_LOAD_EXITING | \
62 CPU_BASED_CR8_STORE_EXITING | \
63 CPU_BASED_RDTSC_EXITING | \
64 CPU_BASED_TPR_SHADOW | \
65 CPU_BASED_USE_IO_BITMAPS | \
66 CPU_BASED_MONITOR_TRAP_FLAG | \
67 CPU_BASED_USE_MSR_BITMAPS | \
68 CPU_BASED_NMI_WINDOW_EXITING | \
69 CPU_BASED_PAUSE_EXITING | \
70 CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)
71
72 #define EVMCS1_SUPPORTED_2NDEXEC \
73 (SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE | \
74 SECONDARY_EXEC_WBINVD_EXITING | \
75 SECONDARY_EXEC_ENABLE_VPID | \
76 SECONDARY_EXEC_ENABLE_EPT | \
77 SECONDARY_EXEC_UNRESTRICTED_GUEST | \
78 SECONDARY_EXEC_DESC | \
79 SECONDARY_EXEC_ENABLE_RDTSCP | \
80 SECONDARY_EXEC_ENABLE_INVPCID | \
81 SECONDARY_EXEC_ENABLE_XSAVES | \
82 SECONDARY_EXEC_RDSEED_EXITING | \
83 SECONDARY_EXEC_RDRAND_EXITING | \
84 SECONDARY_EXEC_TSC_SCALING | \
85 SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE | \
86 SECONDARY_EXEC_PT_USE_GPA | \
87 SECONDARY_EXEC_PT_CONCEAL_VMX | \
88 SECONDARY_EXEC_BUS_LOCK_DETECTION | \
89 SECONDARY_EXEC_NOTIFY_VM_EXITING | \
90 SECONDARY_EXEC_ENCLS_EXITING)
91
92 #define EVMCS1_SUPPORTED_3RDEXEC (0ULL)
93
94 #define EVMCS1_SUPPORTED_VMEXIT_CTRL \
95 (VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR | \
96 VM_EXIT_SAVE_DEBUG_CONTROLS | \
97 VM_EXIT_ACK_INTR_ON_EXIT | \
98 VM_EXIT_HOST_ADDR_SPACE_SIZE | \
99 VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \
100 VM_EXIT_SAVE_IA32_PAT | \
101 VM_EXIT_LOAD_IA32_PAT | \
102 VM_EXIT_SAVE_IA32_EFER | \
103 VM_EXIT_LOAD_IA32_EFER | \
104 VM_EXIT_CLEAR_BNDCFGS | \
105 VM_EXIT_PT_CONCEAL_PIP | \
106 VM_EXIT_CLEAR_IA32_RTIT_CTL)
107
108 #define EVMCS1_SUPPORTED_VMENTRY_CTRL \
109 (VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR | \
110 VM_ENTRY_LOAD_DEBUG_CONTROLS | \
111 VM_ENTRY_IA32E_MODE | \
112 VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL | \
113 VM_ENTRY_LOAD_IA32_PAT | \
114 VM_ENTRY_LOAD_IA32_EFER | \
115 VM_ENTRY_LOAD_BNDCFGS | \
116 VM_ENTRY_PT_CONCEAL_PIP | \
117 VM_ENTRY_LOAD_IA32_RTIT_CTL)
118
119 #define EVMCS1_SUPPORTED_VMFUNC (0)
120
121 struct evmcs_field {
122 u16 offset;
123 u16 clean_field;
124 };
125
126 extern const struct evmcs_field vmcs_field_to_evmcs_1[];
127 extern const unsigned int nr_evmcs_1_fields;
128
129 static __always_inline int evmcs_field_offset(unsigned long field,
130 u16 *clean_field)
131 {
132 const struct evmcs_field *evmcs_field;
133 unsigned int index = ROL16(field, 6);
134
135 if (unlikely(index >= nr_evmcs_1_fields))
136 return -ENOENT;
137
138 evmcs_field = &vmcs_field_to_evmcs_1[index];
139
140 /*
141 * Use offset=0 to detect holes in eVMCS. This offset belongs to
142 * 'revision_id' but this field has no encoding and is supposed to
143 * be accessed directly.
144 */
145 if (unlikely(!evmcs_field->offset))
146 return -ENOENT;
147
148 if (clean_field)
149 *clean_field = evmcs_field->clean_field;
150
151 return evmcs_field->offset;
152 }
153
154 static inline u64 evmcs_read_any(struct hv_enlightened_vmcs *evmcs,
155 unsigned long field, u16 offset)
156 {
157 /*
158 * vmcs12_read_any() doesn't care whether the supplied structure
159 * is 'struct vmcs12' or 'struct hv_enlightened_vmcs' as it takes
160 * the exact offset of the required field, use it for convenience
161 * here.
162 */
163 return vmcs12_read_any((void *)evmcs, field, offset);
164 }
165
166 #endif /* __KVM_X86_VMX_HYPERV_H */
167
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