arch/x86/kvm/vmx/evmcs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <linux/errno.h>
   4 #include <linux/smp.h>
   5
   6 #include "../hyperv.h"
   7 #include "evmcs.h"
   8 #include "vmcs.h"
   9 #include "vmx.h"
  10
  11 DEFINE_STATIC_KEY_FALSE(enable_evmcs);
  12
  13 #if IS_ENABLED(CONFIG_HYPERV)
  14
  15 #define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
  16 #define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)
  17 #define EVMCS1_FIELD(number, name, clean_field)[ROL16(number, 6)] = \
  18                 {EVMCS1_OFFSET(name), clean_field}
  19
  20 const struct evmcs_field vmcs_field_to_evmcs_1[] = {
  21         /* 64 bit rw */
  22         EVMCS1_FIELD(GUEST_RIP, guest_rip,
  23                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
  24         EVMCS1_FIELD(GUEST_RSP, guest_rsp,
  25                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
  26         EVMCS1_FIELD(GUEST_RFLAGS, guest_rflags,
  27                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
  28         EVMCS1_FIELD(HOST_IA32_PAT, host_ia32_pat,
  29                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  30         EVMCS1_FIELD(HOST_IA32_EFER, host_ia32_efer,
  31                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  32         EVMCS1_FIELD(HOST_CR0, host_cr0,
  33                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  34         EVMCS1_FIELD(HOST_CR3, host_cr3,
  35                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  36         EVMCS1_FIELD(HOST_CR4, host_cr4,
  37                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  38         EVMCS1_FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp,
  39                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  40         EVMCS1_FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip,
  41                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  42         EVMCS1_FIELD(HOST_RIP, host_rip,
  43                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
  44         EVMCS1_FIELD(IO_BITMAP_A, io_bitmap_a,
  45                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
  46         EVMCS1_FIELD(IO_BITMAP_B, io_bitmap_b,
  47                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
  48         EVMCS1_FIELD(MSR_BITMAP, msr_bitmap,
  49                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP),
  50         EVMCS1_FIELD(GUEST_ES_BASE, guest_es_base,
  51                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  52         EVMCS1_FIELD(GUEST_CS_BASE, guest_cs_base,
  53                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  54         EVMCS1_FIELD(GUEST_SS_BASE, guest_ss_base,
  55                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  56         EVMCS1_FIELD(GUEST_DS_BASE, guest_ds_base,
  57                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  58         EVMCS1_FIELD(GUEST_FS_BASE, guest_fs_base,
  59                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  60         EVMCS1_FIELD(GUEST_GS_BASE, guest_gs_base,
  61                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  62         EVMCS1_FIELD(GUEST_LDTR_BASE, guest_ldtr_base,
  63                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  64         EVMCS1_FIELD(GUEST_TR_BASE, guest_tr_base,
  65                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  66         EVMCS1_FIELD(GUEST_GDTR_BASE, guest_gdtr_base,
  67                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  68         EVMCS1_FIELD(GUEST_IDTR_BASE, guest_idtr_base,
  69                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
  70         EVMCS1_FIELD(TSC_OFFSET, tsc_offset,
  71                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
  72         EVMCS1_FIELD(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr,
  73                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
  74         EVMCS1_FIELD(VMCS_LINK_POINTER, vmcs_link_pointer,
  75                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  76         EVMCS1_FIELD(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl,
  77                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  78         EVMCS1_FIELD(GUEST_IA32_PAT, guest_ia32_pat,
  79                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  80         EVMCS1_FIELD(GUEST_IA32_EFER, guest_ia32_efer,
  81                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  82         EVMCS1_FIELD(GUEST_PDPTR0, guest_pdptr0,
  83                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  84         EVMCS1_FIELD(GUEST_PDPTR1, guest_pdptr1,
  85                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  86         EVMCS1_FIELD(GUEST_PDPTR2, guest_pdptr2,
  87                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  88         EVMCS1_FIELD(GUEST_PDPTR3, guest_pdptr3,
  89                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  90         EVMCS1_FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions,
  91                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  92         EVMCS1_FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp,
  93                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  94         EVMCS1_FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip,
  95                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
  96         EVMCS1_FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask,
  97                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
  98         EVMCS1_FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask,
  99                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 100         EVMCS1_FIELD(CR0_READ_SHADOW, cr0_read_shadow,
 101                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 102         EVMCS1_FIELD(CR4_READ_SHADOW, cr4_read_shadow,
 103                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 104         EVMCS1_FIELD(GUEST_CR0, guest_cr0,
 105                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 106         EVMCS1_FIELD(GUEST_CR3, guest_cr3,
 107                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 108         EVMCS1_FIELD(GUEST_CR4, guest_cr4,
 109                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 110         EVMCS1_FIELD(GUEST_DR7, guest_dr7,
 111                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
 112         EVMCS1_FIELD(HOST_FS_BASE, host_fs_base,
 113                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 114         EVMCS1_FIELD(HOST_GS_BASE, host_gs_base,
 115                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 116         EVMCS1_FIELD(HOST_TR_BASE, host_tr_base,
 117                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 118         EVMCS1_FIELD(HOST_GDTR_BASE, host_gdtr_base,
 119                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 120         EVMCS1_FIELD(HOST_IDTR_BASE, host_idtr_base,
 121                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 122         EVMCS1_FIELD(HOST_RSP, host_rsp,
 123                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
 124         EVMCS1_FIELD(EPT_POINTER, ept_pointer,
 125                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),
 126         EVMCS1_FIELD(GUEST_BNDCFGS, guest_bndcfgs,
 127                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 128         EVMCS1_FIELD(XSS_EXIT_BITMAP, xss_exit_bitmap,
 129                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
 130
 131         /* 64 bit read only */
 132         EVMCS1_FIELD(GUEST_PHYSICAL_ADDRESS, guest_physical_address,
 133                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 134         EVMCS1_FIELD(EXIT_QUALIFICATION, exit_qualification,
 135                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 136         /*
 137          * Not defined in KVM:
 138          *
 139          * EVMCS1_FIELD(0x00006402, exit_io_instruction_ecx,
 140          *              HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
 141          * EVMCS1_FIELD(0x00006404, exit_io_instruction_esi,
 142          *              HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
 143          * EVMCS1_FIELD(0x00006406, exit_io_instruction_esi,
 144          *              HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
 145          * EVMCS1_FIELD(0x00006408, exit_io_instruction_eip,
 146          *              HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
 147          */
 148         EVMCS1_FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address,
 149                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 150
 151         /*
 152          * No mask defined in the spec as Hyper-V doesn't currently support
 153          * these. Future proof by resetting the whole clean field mask on
 154          * access.
 155          */
 156         EVMCS1_FIELD(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr,
 157                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 158         EVMCS1_FIELD(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr,
 159                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 160         EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr,
 161                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 162         EVMCS1_FIELD(CR3_TARGET_VALUE0, cr3_target_value0,
 163                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 164         EVMCS1_FIELD(CR3_TARGET_VALUE1, cr3_target_value1,
 165                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 166         EVMCS1_FIELD(CR3_TARGET_VALUE2, cr3_target_value2,
 167                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 168         EVMCS1_FIELD(CR3_TARGET_VALUE3, cr3_target_value3,
 169                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 170
 171         /* 32 bit rw */
 172         EVMCS1_FIELD(TPR_THRESHOLD, tpr_threshold,
 173                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 174         EVMCS1_FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info,
 175                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
 176         EVMCS1_FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control,
 177                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC),
 178         EVMCS1_FIELD(EXCEPTION_BITMAP, exception_bitmap,
 179                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EXCPN),
 180         EVMCS1_FIELD(VM_ENTRY_CONTROLS, vm_entry_controls,
 181                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY),
 182         EVMCS1_FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field,
 183                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
 184         EVMCS1_FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE,
 185                      vm_entry_exception_error_code,
 186                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
 187         EVMCS1_FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len,
 188                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
 189         EVMCS1_FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs,
 190                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 191         EVMCS1_FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control,
 192                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
 193         EVMCS1_FIELD(VM_EXIT_CONTROLS, vm_exit_controls,
 194                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
 195         EVMCS1_FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control,
 196                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
 197         EVMCS1_FIELD(GUEST_ES_LIMIT, guest_es_limit,
 198                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 199         EVMCS1_FIELD(GUEST_CS_LIMIT, guest_cs_limit,
 200                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 201         EVMCS1_FIELD(GUEST_SS_LIMIT, guest_ss_limit,
 202                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 203         EVMCS1_FIELD(GUEST_DS_LIMIT, guest_ds_limit,
 204                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 205         EVMCS1_FIELD(GUEST_FS_LIMIT, guest_fs_limit,
 206                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 207         EVMCS1_FIELD(GUEST_GS_LIMIT, guest_gs_limit,
 208                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 209         EVMCS1_FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit,
 210                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 211         EVMCS1_FIELD(GUEST_TR_LIMIT, guest_tr_limit,
 212                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 213         EVMCS1_FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit,
 214                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 215         EVMCS1_FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit,
 216                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 217         EVMCS1_FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes,
 218                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 219         EVMCS1_FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes,
 220                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 221         EVMCS1_FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes,
 222                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 223         EVMCS1_FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes,
 224                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 225         EVMCS1_FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes,
 226                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 227         EVMCS1_FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes,
 228                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 229         EVMCS1_FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes,
 230                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 231         EVMCS1_FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes,
 232                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 233         EVMCS1_FIELD(GUEST_ACTIVITY_STATE, guest_activity_state,
 234                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 235         EVMCS1_FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs,
 236                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 237
 238         /* 32 bit read only */
 239         EVMCS1_FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error,
 240                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 241         EVMCS1_FIELD(VM_EXIT_REASON, vm_exit_reason,
 242                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 243         EVMCS1_FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info,
 244                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 245         EVMCS1_FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code,
 246                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 247         EVMCS1_FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field,
 248                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 249         EVMCS1_FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code,
 250                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 251         EVMCS1_FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len,
 252                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 253         EVMCS1_FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info,
 254                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
 255
 256         /* No mask defined in the spec (not used) */
 257         EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask,
 258                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 259         EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match,
 260                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 261         EVMCS1_FIELD(CR3_TARGET_COUNT, cr3_target_count,
 262                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 263         EVMCS1_FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count,
 264                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 265         EVMCS1_FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count,
 266                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 267         EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count,
 268                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
 269
 270         /* 16 bit rw */
 271         EVMCS1_FIELD(HOST_ES_SELECTOR, host_es_selector,
 272                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 273         EVMCS1_FIELD(HOST_CS_SELECTOR, host_cs_selector,
 274                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 275         EVMCS1_FIELD(HOST_SS_SELECTOR, host_ss_selector,
 276                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 277         EVMCS1_FIELD(HOST_DS_SELECTOR, host_ds_selector,
 278                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 279         EVMCS1_FIELD(HOST_FS_SELECTOR, host_fs_selector,
 280                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 281         EVMCS1_FIELD(HOST_GS_SELECTOR, host_gs_selector,
 282                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 283         EVMCS1_FIELD(HOST_TR_SELECTOR, host_tr_selector,
 284                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 285         EVMCS1_FIELD(GUEST_ES_SELECTOR, guest_es_selector,
 286                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 287         EVMCS1_FIELD(GUEST_CS_SELECTOR, guest_cs_selector,
 288                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 289         EVMCS1_FIELD(GUEST_SS_SELECTOR, guest_ss_selector,
 290                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 291         EVMCS1_FIELD(GUEST_DS_SELECTOR, guest_ds_selector,
 292                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 293         EVMCS1_FIELD(GUEST_FS_SELECTOR, guest_fs_selector,
 294                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 295         EVMCS1_FIELD(GUEST_GS_SELECTOR, guest_gs_selector,
 296                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 297         EVMCS1_FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector,
 298                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 299         EVMCS1_FIELD(GUEST_TR_SELECTOR, guest_tr_selector,
 300                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
 301         EVMCS1_FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id,
 302                      HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),
 303 };
 304 const unsigned int nr_evmcs_1_fields = ARRAY_SIZE(vmcs_field_to_evmcs_1);
 305
 306 void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)
 307 {
 308         vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;
 309         vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
 310
 311         vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
 312         vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
 313
 314 }
 315 #endif
 316
 317 bool nested_enlightened_vmentry(struct kvm_vcpu *vcpu, u64 *evmcs_gpa)
 318 {
 319         struct hv_vp_assist_page assist_page;
 320
 321         *evmcs_gpa = -1ull;
 322
 323         if (unlikely(!kvm_hv_get_assist_page(vcpu, &assist_page)))
 324                 return false;
 325
 326         if (unlikely(!assist_page.enlighten_vmentry))
 327                 return false;
 328
 329         *evmcs_gpa = assist_page.current_nested_vmcs;
 330
 331         return true;
 332 }
 333
 334 uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu)
 335 {
 336        struct vcpu_vmx *vmx = to_vmx(vcpu);
 337        /*
 338         * vmcs_version represents the range of supported Enlightened VMCS
 339         * versions: lower 8 bits is the minimal version, higher 8 bits is the
 340         * maximum supported version. KVM supports versions from 1 to
 341         * KVM_EVMCS_VERSION.
 342         */
 343        if (vmx->nested.enlightened_vmcs_enabled)
 344                return (KVM_EVMCS_VERSION << 8) | 1;
 345
 346        return 0;
 347 }
 348
 349 int nested_enable_evmcs(struct kvm_vcpu *vcpu,
 350                         uint16_t *vmcs_version)
 351 {
 352         struct vcpu_vmx *vmx = to_vmx(vcpu);
 353         bool evmcs_already_enabled = vmx->nested.enlightened_vmcs_enabled;
 354
 355         vmx->nested.enlightened_vmcs_enabled = true;
 356
 357         if (vmcs_version)
 358                 *vmcs_version = nested_get_evmcs_version(vcpu);
 359
 360         /* We don't support disabling the feature for simplicity. */
 361         if (evmcs_already_enabled)
 362                 return 0;
 363
 364         vmx->nested.msrs.pinbased_ctls_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;
 365         vmx->nested.msrs.entry_ctls_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
 366         vmx->nested.msrs.exit_ctls_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
 367         vmx->nested.msrs.secondary_ctls_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
 368         vmx->nested.msrs.vmfunc_controls &= ~EVMCS1_UNSUPPORTED_VMFUNC;
 369
 370         return 0;
 371 }