Quelle  hyperv_evmcs.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * This file contains common definitions for working with Enlightened VMCS which
 * are used both by Hyper-V on KVM and KVM on Hyper-V.
 */
#ifndef __KVM_X86_VMX_HYPERV_EVMCS_H
#define __KVM_X86_VMX_HYPERV_EVMCS_H

#include <hyperv/hvhdk.h>

#include "capabilities.h"
#include "vmcs12.h"

#define KVM_EVMCS_VERSION 1

/*
 * Enlightened VMCSv1 doesn't support these:
 *
 * POSTED_INTR_NV                  = 0x00000002,
 * GUEST_INTR_STATUS               = 0x00000810,
 * APIC_ACCESS_ADDR = 0x00002014,
 * POSTED_INTR_DESC_ADDR           = 0x00002016,
 * EOI_EXIT_BITMAP0                = 0x0000201c,
 * EOI_EXIT_BITMAP1                = 0x0000201e,
 * EOI_EXIT_BITMAP2                = 0x00002020,
 * EOI_EXIT_BITMAP3                = 0x00002022,
 * GUEST_PML_INDEX = 0x00000812,
 * PML_ADDRESS = 0x0000200e,
 * VM_FUNCTION_CONTROL             = 0x00002018,
 * EPTP_LIST_ADDRESS               = 0x00002024,
 * VMREAD_BITMAP                   = 0x00002026,
 * VMWRITE_BITMAP                  = 0x00002028,
 *
 * TSC_MULTIPLIER                  = 0x00002032,
 * PLE_GAP                         = 0x00004020,
 * PLE_WINDOW                      = 0x00004022,
 * VMX_PREEMPTION_TIMER_VALUE      = 0x0000482E,
 *
 * Currently unsupported in KVM:
 * GUEST_IA32_RTIT_CTL = 0x00002814,
 */
#define EVMCS1_SUPPORTED_PINCTRL     \
 (PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR |    \
  PIN_BASED_EXT_INTR_MASK |     \
  PIN_BASED_NMI_EXITING |     \
  PIN_BASED_VIRTUAL_NMIS)

#define EVMCS1_SUPPORTED_EXEC_CTRL     \
 (CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR |    \
  CPU_BASED_HLT_EXITING |     \
  CPU_BASED_CR3_LOAD_EXITING |     \
  CPU_BASED_CR3_STORE_EXITING |     \
  CPU_BASED_UNCOND_IO_EXITING |     \
  CPU_BASED_MOV_DR_EXITING |     \
  CPU_BASED_USE_TSC_OFFSETTING |     \
  CPU_BASED_MWAIT_EXITING |     \
  CPU_BASED_MONITOR_EXITING |     \
  CPU_BASED_INVLPG_EXITING |     \
  CPU_BASED_RDPMC_EXITING |     \
  CPU_BASED_INTR_WINDOW_EXITING |    \
  CPU_BASED_CR8_LOAD_EXITING |     \
  CPU_BASED_CR8_STORE_EXITING |     \
  CPU_BASED_RDTSC_EXITING |     \
  CPU_BASED_TPR_SHADOW |      \
  CPU_BASED_USE_IO_BITMAPS |     \
  CPU_BASED_MONITOR_TRAP_FLAG |     \
  CPU_BASED_USE_MSR_BITMAPS |     \
  CPU_BASED_NMI_WINDOW_EXITING |     \
  CPU_BASED_PAUSE_EXITING |     \
  CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)

#define EVMCS1_SUPPORTED_2NDEXEC     \
 (SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |   \
  SECONDARY_EXEC_WBINVD_EXITING |    \
  SECONDARY_EXEC_ENABLE_VPID |     \
  SECONDARY_EXEC_ENABLE_EPT |     \
  SECONDARY_EXEC_UNRESTRICTED_GUEST |    \
  SECONDARY_EXEC_DESC |      \
  SECONDARY_EXEC_ENABLE_RDTSCP |     \
  SECONDARY_EXEC_ENABLE_INVPCID |    \
  SECONDARY_EXEC_ENABLE_XSAVES |     \
  SECONDARY_EXEC_RDSEED_EXITING |    \
  SECONDARY_EXEC_RDRAND_EXITING |    \
  SECONDARY_EXEC_TSC_SCALING |     \
  SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE |    \
  SECONDARY_EXEC_PT_USE_GPA |     \
  SECONDARY_EXEC_PT_CONCEAL_VMX |    \
  SECONDARY_EXEC_BUS_LOCK_DETECTION |    \
  SECONDARY_EXEC_NOTIFY_VM_EXITING |    \
  SECONDARY_EXEC_ENCLS_EXITING)

#define EVMCS1_SUPPORTED_3RDEXEC (0ULL)

#define EVMCS1_SUPPORTED_VMEXIT_CTRL     \
 (VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR |    \
  VM_EXIT_SAVE_DEBUG_CONTROLS |     \
  VM_EXIT_ACK_INTR_ON_EXIT |     \
  VM_EXIT_HOST_ADDR_SPACE_SIZE |     \
  VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |    \
  VM_EXIT_SAVE_IA32_PAT |     \
  VM_EXIT_LOAD_IA32_PAT |     \
  VM_EXIT_SAVE_IA32_EFER |     \
  VM_EXIT_LOAD_IA32_EFER |     \
  VM_EXIT_CLEAR_BNDCFGS |     \
  VM_EXIT_PT_CONCEAL_PIP |     \
  VM_EXIT_CLEAR_IA32_RTIT_CTL)

#define EVMCS1_SUPPORTED_VMENTRY_CTRL     \
 (VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR |    \
  VM_ENTRY_LOAD_DEBUG_CONTROLS |     \
  VM_ENTRY_IA32E_MODE |      \
  VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |    \
  VM_ENTRY_LOAD_IA32_PAT |     \
  VM_ENTRY_LOAD_IA32_EFER |     \
  VM_ENTRY_LOAD_BNDCFGS |     \
  VM_ENTRY_PT_CONCEAL_PIP |     \
  VM_ENTRY_LOAD_IA32_RTIT_CTL)

#define EVMCS1_SUPPORTED_VMFUNC (0)

struct evmcs_field {
 u16 offset;
 u16 clean_field;
};

extern const struct evmcs_field vmcs_field_to_evmcs_1[];
extern const unsigned int nr_evmcs_1_fields;

static __always_inline int evmcs_field_offset(unsigned long field,
           u16 *clean_field)
{
 const struct evmcs_field *evmcs_field;
 unsigned int index = ROL16(field, 6);

 if (unlikely(index >= nr_evmcs_1_fields))
  return -ENOENT;

 evmcs_field = &vmcs_field_to_evmcs_1[index];

 /*
 * Use offset=0 to detect holes in eVMCS. This offset belongs to
 * 'revision_id' but this field has no encoding and is supposed to
 * be accessed directly.
 */
 if (unlikely(!evmcs_field->offset))
  return -ENOENT;

 if (clean_field)
  *clean_field = evmcs_field->clean_field;

 return evmcs_field->offset;
}

static inline u64 evmcs_read_any(struct hv_enlightened_vmcs *evmcs,
     unsigned long field, u16 offset)
{
 /*
 * vmcs12_read_any() doesn't care whether the supplied structure
 * is 'struct vmcs12' or 'struct hv_enlightened_vmcs' as it takes
 * the exact offset of the required field, use it for convenience
 * here.
 */
 return vmcs12_read_any((void *)evmcs, field, offset);
}

#endif /* __KVM_X86_VMX_HYPERV_H */