arch/x86/kvm/vmx/hyperv_evmcs.h

   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 */