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Bochs/bochs/cpu/vmcs.cc

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2009-2019 Stanislav Shwartsman
// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU(0)->
#if BX_SUPPORT_VMX
#define VMCS_REVISION_ID_FIELD_ADDR (0x0000)
#define VMCS_VMX_ABORT_FIELD_ADDR (0x0004)
#define VMCS_LAUNCH_STATE_FIELD_ADDR (0x0008)
VMCS_Mapping::VMCS_Mapping(Bit32u revision): revision_id(revision), ar_format(VMCS_AR_ROTATE)
{
clear();
init_generic_mapping();
}
VMCS_Mapping::VMCS_Mapping(Bit32u revision, const char *filename): revision_id(revision), ar_format(VMCS_AR_ROTATE)
{
clear();
// read mapping from file
BX_PANIC(("Reading VMCS mapping from file not implemented yet"));
init_generic_mapping(); // for now
}
BX_CPP_INLINE Bit32u vmcs_encoding(Bit32u type, Bit32u field)
{
Bit32u encoding = ((type & 0xc) << 11) + ((type & 0x3) << 10) + field;
return encoding;
}
void VMCS_Mapping::init_generic_mapping()
{
vmcs_revision_id_field_offset = VMCS_REVISION_ID_FIELD_ADDR;
vmx_abort_field_offset = VMCS_VMX_ABORT_FIELD_ADDR;
vmcs_launch_state_field_offset = VMCS_LAUNCH_STATE_FIELD_ADDR;
// try to build generic VMCS map
// 16 types, 48 encodings (0x30), 4 bytes each field => 3072 bytes
// reserve VMCS_DATA_OFFSET bytes in the beginning for special (hidden) VMCS fields
for (unsigned type=0; type<16; type++) {
for (unsigned field=0; field < VMX_HIGHEST_VMCS_ENCODING; field++) {
Bit32u encoding = vmcs_encoding(type, field);
if (vmcs_map[type][field] != 0xffffffff) {
BX_PANIC(("VMCS type %d field %d (encoding = 0x%08x) is already initialized", type, field, encoding));
}
// allocate 64 fields (4 byte each) per type (even more than 48 which is required now)
vmcs_map[type][field] = VMCS_DATA_OFFSET + (type*64 + field) * 4;
if(vmcs_map[type][field] >= VMX_VMCS_AREA_SIZE) {
BX_PANIC(("VMCS type %d field %d (encoding = 0x%08x) is out of VMCS boundaries", type, field, encoding));
}
BX_DEBUG(("VMCS field 0x%08x located at 0x%08x", encoding, vmcs_map[type][field]));
}
}
}
void VMCS_Mapping::clear()
{
for (unsigned type=0; type<16; type++) {
for (unsigned field=0; field < VMX_HIGHEST_VMCS_ENCODING; field++) {
vmcs_map[type][field] = 0xffffffff;
}
}
}
bx_bool VMCS_Mapping::clear_mapping(Bit32u encoding)
{
return set_mapping(encoding, 0xffffffff);
}
bx_bool VMCS_Mapping::set_mapping(Bit32u encoding, Bit32u offset)
{
if (is_reserved(encoding))
return false;
unsigned field = VMCS_FIELD(encoding);
if (field >= VMX_HIGHEST_VMCS_ENCODING)
return false;
vmcs_map[VMCS_FIELD_INDEX(encoding)][field] = offset;
return true;
}
unsigned VMCS_Mapping::vmcs_field_offset(Bit32u encoding) const
{
if (is_reserved(encoding)) {
switch(encoding) {
case VMCS_REVISION_ID_FIELD_ENCODING: return vmcs_revision_id_field_offset;
case VMCS_VMX_ABORT_FIELD_ENCODING: return vmx_abort_field_offset;
case VMCS_LAUNCH_STATE_FIELD_ENCODING: return vmcs_launch_state_field_offset;
}
return 0xffffffff;
}
unsigned field = VMCS_FIELD(encoding);
if (field >= VMX_HIGHEST_VMCS_ENCODING)
return 0xffffffff;
return vmcs_map[VMCS_FIELD_INDEX(encoding)][field];
}
void BX_CPU_C::init_VMCS(void)
{
BX_CPU_THIS_PTR vmcs_map = BX_CPU_THIS_PTR cpuid->get_vmcs();
init_vmx_capabilities();
static bx_bool vmcs_map_ready = 0;
if (vmcs_map_ready) return;
vmcs_map_ready = 1;
// disable not supported encodings
for (unsigned type=0; type<16; type++) {
for (unsigned field=0; field <= VMX_HIGHEST_VMCS_ENCODING; field++) {
Bit32u encoding = vmcs_encoding(type, field);
if (! vmcs_field_supported(encoding)) {
BX_CPU_THIS_PTR vmcs_map->clear_mapping(encoding);
BX_DEBUG(("VMCS field 0x%08x is not supported", encoding));
}
}
}
}
#undef LOG_THIS
#define LOG_THIS BX_CPU_THIS_PTR
bx_bool BX_CPU_C::vmcs_field_supported(Bit32u encoding)
{
switch(encoding)
{
#if BX_SUPPORT_VMX >= 2
/* VMCS 16-bit control fields */
/* binary 0000_00xx_xxxx_xxx0 */
case VMCS_16BIT_CONTROL_VPID:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_VPID);
case VMCS_16BIT_CONTROL_EPTP_INDEX:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT_EXCEPTION);
#endif
/* VMCS 16-bit guest-state fields */
/* binary 0000_10xx_xxxx_xxx0 */
case VMCS_16BIT_GUEST_ES_SELECTOR:
case VMCS_16BIT_GUEST_CS_SELECTOR:
case VMCS_16BIT_GUEST_SS_SELECTOR:
case VMCS_16BIT_GUEST_DS_SELECTOR:
case VMCS_16BIT_GUEST_FS_SELECTOR:
case VMCS_16BIT_GUEST_GS_SELECTOR:
case VMCS_16BIT_GUEST_LDTR_SELECTOR:
case VMCS_16BIT_GUEST_TR_SELECTOR:
return 1;
#if BX_SUPPORT_VMX >= 2
case VMCS_16BIT_GUEST_INTERRUPT_STATUS:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_VINTR_DELIVERY);
case VMCS_16BIT_GUEST_PML_INDEX:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PML);
#endif
/* VMCS 16-bit host-state fields */
/* binary 0000_11xx_xxxx_xxx0 */
case VMCS_16BIT_HOST_ES_SELECTOR:
case VMCS_16BIT_HOST_CS_SELECTOR:
case VMCS_16BIT_HOST_SS_SELECTOR:
case VMCS_16BIT_HOST_DS_SELECTOR:
case VMCS_16BIT_HOST_FS_SELECTOR:
case VMCS_16BIT_HOST_GS_SELECTOR:
case VMCS_16BIT_HOST_TR_SELECTOR:
return 1;
/* VMCS 32_bit control fields */
/* binary 0100_00xx_xxxx_xxx0 */
case VMCS_32BIT_CONTROL_PIN_BASED_EXEC_CONTROLS:
case VMCS_32BIT_CONTROL_PROCESSOR_BASED_VMEXEC_CONTROLS:
case VMCS_32BIT_CONTROL_EXECUTION_BITMAP:
case VMCS_32BIT_CONTROL_PAGE_FAULT_ERR_CODE_MASK:
case VMCS_32BIT_CONTROL_PAGE_FAULT_ERR_CODE_MATCH:
case VMCS_32BIT_CONTROL_CR3_TARGET_COUNT:
case VMCS_32BIT_CONTROL_VMEXIT_CONTROLS:
case VMCS_32BIT_CONTROL_VMEXIT_MSR_STORE_COUNT:
case VMCS_32BIT_CONTROL_VMEXIT_MSR_LOAD_COUNT:
case VMCS_32BIT_CONTROL_VMENTRY_CONTROLS:
case VMCS_32BIT_CONTROL_VMENTRY_MSR_LOAD_COUNT:
case VMCS_32BIT_CONTROL_VMENTRY_INTERRUPTION_INFO:
case VMCS_32BIT_CONTROL_VMENTRY_EXCEPTION_ERR_CODE:
case VMCS_32BIT_CONTROL_VMENTRY_INSTRUCTION_LENGTH:
return 1;
#if BX_SUPPORT_X86_64
case VMCS_32BIT_CONTROL_TPR_THRESHOLD:
if (is_cpu_extension_supported(BX_ISA_LONG_MODE))
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_TPR_SHADOW);
else
return 0;
#endif
case VMCS_32BIT_CONTROL_SECONDARY_VMEXEC_CONTROLS:
return BX_CPU_THIS_PTR vmx_cap.vmx_vmexec_ctrl2_supported_bits;
#if BX_SUPPORT_VMX >= 2
case VMCS_32BIT_CONTROL_PAUSE_LOOP_EXITING_GAP:
case VMCS_32BIT_CONTROL_PAUSE_LOOP_EXITING_WINDOW:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAUSE_LOOP_EXITING);
#endif
/* VMCS 32-bit read only data fields */
/* binary 0100_01xx_xxxx_xxx0 */
case VMCS_32BIT_INSTRUCTION_ERROR:
case VMCS_32BIT_VMEXIT_REASON:
case VMCS_32BIT_VMEXIT_INTERRUPTION_INFO:
case VMCS_32BIT_VMEXIT_INTERRUPTION_ERR_CODE:
case VMCS_32BIT_IDT_VECTORING_INFO:
case VMCS_32BIT_IDT_VECTORING_ERR_CODE:
case VMCS_32BIT_VMEXIT_INSTRUCTION_LENGTH:
case VMCS_32BIT_VMEXIT_INSTRUCTION_INFO:
return 1;
/* VMCS 32-bit guest-state fields */
/* binary 0100_10xx_xxxx_xxx0 */
case VMCS_32BIT_GUEST_ES_LIMIT:
case VMCS_32BIT_GUEST_CS_LIMIT:
case VMCS_32BIT_GUEST_SS_LIMIT:
case VMCS_32BIT_GUEST_DS_LIMIT:
case VMCS_32BIT_GUEST_FS_LIMIT:
case VMCS_32BIT_GUEST_GS_LIMIT:
case VMCS_32BIT_GUEST_LDTR_LIMIT:
case VMCS_32BIT_GUEST_TR_LIMIT:
case VMCS_32BIT_GUEST_GDTR_LIMIT:
case VMCS_32BIT_GUEST_IDTR_LIMIT:
case VMCS_32BIT_GUEST_ES_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_CS_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_SS_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_DS_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_FS_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_GS_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_LDTR_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_TR_ACCESS_RIGHTS:
case VMCS_32BIT_GUEST_INTERRUPTIBILITY_STATE:
case VMCS_32BIT_GUEST_ACTIVITY_STATE:
case VMCS_32BIT_GUEST_SMBASE:
case VMCS_32BIT_GUEST_IA32_SYSENTER_CS_MSR:
return 1;
#if BX_SUPPORT_VMX >= 2
case VMCS_32BIT_GUEST_PREEMPTION_TIMER_VALUE:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PREEMPTION_TIMER);
#endif
/* VMCS 32-bit host-state fields */
/* binary 0100_11xx_xxxx_xxx0 */
case VMCS_32BIT_HOST_IA32_SYSENTER_CS_MSR:
return 1;
/* VMCS 64-bit control fields */
/* binary 0010_00xx_xxxx_xxx0 */
case VMCS_64BIT_CONTROL_IO_BITMAP_A:
case VMCS_64BIT_CONTROL_IO_BITMAP_A_HI:
case VMCS_64BIT_CONTROL_IO_BITMAP_B:
case VMCS_64BIT_CONTROL_IO_BITMAP_B_HI:
case VMCS_64BIT_CONTROL_MSR_BITMAPS:
case VMCS_64BIT_CONTROL_MSR_BITMAPS_HI:
case VMCS_64BIT_CONTROL_VMEXIT_MSR_STORE_ADDR:
case VMCS_64BIT_CONTROL_VMEXIT_MSR_STORE_ADDR_HI:
case VMCS_64BIT_CONTROL_VMEXIT_MSR_LOAD_ADDR:
case VMCS_64BIT_CONTROL_VMEXIT_MSR_LOAD_ADDR_HI:
case VMCS_64BIT_CONTROL_VMENTRY_MSR_LOAD_ADDR:
case VMCS_64BIT_CONTROL_VMENTRY_MSR_LOAD_ADDR_HI:
case VMCS_64BIT_CONTROL_EXECUTIVE_VMCS_PTR:
case VMCS_64BIT_CONTROL_EXECUTIVE_VMCS_PTR_HI:
return 1;
#if BX_SUPPORT_VMX >= 2
case VMCS_64BIT_CONTROL_PML_ADDRESS:
case VMCS_64BIT_CONTROL_PML_ADDRESS_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PML);
#endif
case VMCS_64BIT_CONTROL_TSC_OFFSET:
case VMCS_64BIT_CONTROL_TSC_OFFSET_HI:
return 1;
#if BX_SUPPORT_X86_64
case VMCS_64BIT_CONTROL_VIRTUAL_APIC_PAGE_ADDR:
case VMCS_64BIT_CONTROL_VIRTUAL_APIC_PAGE_ADDR_HI:
if (is_cpu_extension_supported(BX_ISA_LONG_MODE))
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_TPR_SHADOW);
else
return 0;
case VMCS_64BIT_CONTROL_APIC_ACCESS_ADDR:
case VMCS_64BIT_CONTROL_APIC_ACCESS_ADDR_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_APIC_VIRTUALIZATION);
#endif
#if BX_SUPPORT_VMX >= 2
case VMCS_64BIT_CONTROL_VMFUNC_CTRLS:
case VMCS_64BIT_CONTROL_VMFUNC_CTRLS_HI:
return BX_CPU_THIS_PTR vmx_cap.vmx_vmfunc_supported_bits != 0;
case VMCS_64BIT_CONTROL_EPTPTR:
case VMCS_64BIT_CONTROL_EPTPTR_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT);
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP0:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP0_HI:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP1:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP1_HI:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP2:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP2_HI:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP3:
case VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP3_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_VINTR_DELIVERY);
case VMCS_64BIT_CONTROL_EPTP_LIST_ADDRESS:
case VMCS_64BIT_CONTROL_EPTP_LIST_ADDRESS_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPTP_SWITCHING);
case VMCS_64BIT_CONTROL_VMREAD_BITMAP_ADDR:
case VMCS_64BIT_CONTROL_VMREAD_BITMAP_ADDR_HI:
case VMCS_64BIT_CONTROL_VMWRITE_BITMAP_ADDR:
case VMCS_64BIT_CONTROL_VMWRITE_BITMAP_ADDR_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_VMCS_SHADOWING);
case VMCS_64BIT_CONTROL_VE_EXCEPTION_INFO_ADDR:
case VMCS_64BIT_CONTROL_VE_EXCEPTION_INFO_ADDR_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT_EXCEPTION);
case VMCS_64BIT_CONTROL_XSS_EXITING_BITMAP:
case VMCS_64BIT_CONTROL_XSS_EXITING_BITMAP_HI:
return is_cpu_extension_supported(BX_ISA_XSAVES);
case VMCS_64BIT_CONTROL_SPPTP:
case VMCS_64BIT_CONTROL_SPPTP_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_SPP);
#endif
case VMCS_64BIT_CONTROL_TSC_MULTIPLIER:
case VMCS_64BIT_CONTROL_TSC_MULTIPLIER_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_TSC_SCALING);
#if BX_SUPPORT_VMX >= 2
/* VMCS 64-bit read only data fields */
/* binary 0010_01xx_xxxx_xxx0 */
case VMCS_64BIT_GUEST_PHYSICAL_ADDR:
case VMCS_64BIT_GUEST_PHYSICAL_ADDR_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT);
#endif
/* VMCS 64-bit guest state fields */
/* binary 0010_10xx_xxxx_xxx0 */
case VMCS_64BIT_GUEST_LINK_POINTER:
case VMCS_64BIT_GUEST_LINK_POINTER_HI:
case VMCS_64BIT_GUEST_IA32_DEBUGCTL:
case VMCS_64BIT_GUEST_IA32_DEBUGCTL_HI:
return 1;
#if BX_SUPPORT_VMX >= 2
case VMCS_64BIT_GUEST_IA32_PAT:
case VMCS_64BIT_GUEST_IA32_PAT_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAT);
case VMCS_64BIT_GUEST_IA32_EFER:
case VMCS_64BIT_GUEST_IA32_EFER_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EFER);
#endif
case VMCS_64BIT_GUEST_IA32_PERF_GLOBAL_CTRL:
case VMCS_64BIT_GUEST_IA32_PERF_GLOBAL_CTRL_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PERF_GLOBAL_CTRL);
#if BX_SUPPORT_VMX >= 2
case VMCS_64BIT_GUEST_IA32_PDPTE0:
case VMCS_64BIT_GUEST_IA32_PDPTE0_HI:
case VMCS_64BIT_GUEST_IA32_PDPTE1:
case VMCS_64BIT_GUEST_IA32_PDPTE1_HI:
case VMCS_64BIT_GUEST_IA32_PDPTE2:
case VMCS_64BIT_GUEST_IA32_PDPTE2_HI:
case VMCS_64BIT_GUEST_IA32_PDPTE3:
case VMCS_64BIT_GUEST_IA32_PDPTE3_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT);
#endif
#if BX_SUPPORT_PKEYS
case VMCS_64BIT_GUEST_IA32_PKRS:
case VMCS_64BIT_GUEST_IA32_PKRS_HI:
return is_cpu_extension_supported(BX_ISA_PKS);
#endif
#if BX_SUPPORT_VMX >= 2
/* VMCS 64-bit host state fields */
/* binary 0010_11xx_xxxx_xxx0 */
case VMCS_64BIT_HOST_IA32_PAT:
case VMCS_64BIT_HOST_IA32_PAT_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAT);
case VMCS_64BIT_HOST_IA32_EFER:
case VMCS_64BIT_HOST_IA32_EFER_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_EFER);
#endif
case VMCS_64BIT_HOST_IA32_PERF_GLOBAL_CTRL:
case VMCS_64BIT_HOST_IA32_PERF_GLOBAL_CTRL_HI:
return BX_SUPPORT_VMX_EXTENSION(BX_VMX_PERF_GLOBAL_CTRL);
#if BX_SUPPORT_PKEYS
case VMCS_64BIT_HOST_IA32_PKRS:
case VMCS_64BIT_HOST_IA32_PKRS_HI:
return is_cpu_extension_supported(BX_ISA_PKS);
#endif
/* VMCS natural width control fields */
/* binary 0110_00xx_xxxx_xxx0 */
case VMCS_CONTROL_CR0_GUEST_HOST_MASK:
case VMCS_CONTROL_CR4_GUEST_HOST_MASK:
case VMCS_CONTROL_CR0_READ_SHADOW:
case VMCS_CONTROL_CR4_READ_SHADOW:
case VMCS_CR3_TARGET0:
case VMCS_CR3_TARGET1:
case VMCS_CR3_TARGET2:
case VMCS_CR3_TARGET3:
return 1;
/* VMCS natural width read only data fields */
/* binary 0110_01xx_xxxx_xxx0 */
case VMCS_VMEXIT_QUALIFICATION:
case VMCS_IO_RCX:
case VMCS_IO_RSI:
case VMCS_IO_RDI:
case VMCS_IO_RIP:
case VMCS_GUEST_LINEAR_ADDR:
return 1;
/* VMCS natural width guest state fields */
/* binary 0110_10xx_xxxx_xxx0 */
case VMCS_GUEST_CR0:
case VMCS_GUEST_CR3:
case VMCS_GUEST_CR4:
case VMCS_GUEST_ES_BASE:
case VMCS_GUEST_CS_BASE:
case VMCS_GUEST_SS_BASE:
case VMCS_GUEST_DS_BASE:
case VMCS_GUEST_FS_BASE:
case VMCS_GUEST_GS_BASE:
case VMCS_GUEST_LDTR_BASE:
case VMCS_GUEST_TR_BASE:
case VMCS_GUEST_GDTR_BASE:
case VMCS_GUEST_IDTR_BASE:
case VMCS_GUEST_DR7:
case VMCS_GUEST_RSP:
case VMCS_GUEST_RIP:
case VMCS_GUEST_RFLAGS:
case VMCS_GUEST_PENDING_DBG_EXCEPTIONS:
case VMCS_GUEST_IA32_SYSENTER_ESP_MSR:
case VMCS_GUEST_IA32_SYSENTER_EIP_MSR:
return 1;
case VMCS_GUEST_IA32_S_CET:
case VMCS_GUEST_SSP:
case VMCS_GUEST_INTERRUPT_SSP_TABLE_ADDR:
return is_cpu_extension_supported(BX_ISA_CET);
/* VMCS natural width host state fields */
/* binary 0110_11xx_xxxx_xxx0 */
case VMCS_HOST_CR0:
case VMCS_HOST_CR3:
case VMCS_HOST_CR4:
case VMCS_HOST_FS_BASE:
case VMCS_HOST_GS_BASE:
case VMCS_HOST_TR_BASE:
case VMCS_HOST_GDTR_BASE:
case VMCS_HOST_IDTR_BASE:
case VMCS_HOST_IA32_SYSENTER_ESP_MSR:
case VMCS_HOST_IA32_SYSENTER_EIP_MSR:
case VMCS_HOST_RSP:
case VMCS_HOST_RIP:
return 1;
case VMCS_HOST_IA32_S_CET:
case VMCS_HOST_SSP:
case VMCS_HOST_INTERRUPT_SSP_TABLE_ADDR:
return is_cpu_extension_supported(BX_ISA_CET);
default:
return 0;
}
return 0;
}
void BX_CPU_C::init_vmx_capabilities(void)
{
// initialization order is important !
#if BX_SUPPORT_VMX >= 2
init_ept_vpid_capabilities();
init_vmfunc_capabilities();
#endif
init_pin_based_vmexec_ctrls();
init_secondary_proc_based_vmexec_ctrls();
init_primary_proc_based_vmexec_ctrls();
init_vmexit_ctrls();
init_vmentry_ctrls();
}
#if BX_SUPPORT_VMX >= 2
void BX_CPU_C::init_ept_vpid_capabilities(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// EPT/VPID capabilities
// -----------------------------------------------------------
// [0] - BX_EPT_ENTRY_EXECUTE_ONLY support
// [6] - 4-levels EPT page walk length
// [8] - allow UC EPT paging structure memory type
// [14] - allow WB EPT paging structure memory type
// [16] - EPT 2M pages support
// [17] - EPT 1G pages support
// [20] - INVEPT instruction supported
// [21] - EPT A/D bits supported
// [22] - advanced VM-exit information for EPT violations (not implemented yet)
// [23] - Enable Shadow Stack control bit is supported in EPTP (CET)
// [25] - INVEPT single-context invalidation supported
// [26] - INVEPT all-context invalidation supported
// [32] - INVVPID instruction supported
// [40] - individual-address INVVPID is supported
// [41] - single-context INVVPID is supported
// [42] - all-context INVVPID is supported
// [43] - single-context-retaining-globals INVVPID is supported
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT)) {
cap->vmx_ept_vpid_cap_supported_bits = BX_CONST64(0x06114141);
if (is_cpu_extension_supported(BX_ISA_1G_PAGES))
cap->vmx_ept_vpid_cap_supported_bits |= (1 << 17);
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT_ACCESS_DIRTY))
cap->vmx_ept_vpid_cap_supported_bits |= (1 << 21);
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_CET))
cap->vmx_ept_vpid_cap_supported_bits |= (1 << 23);
}
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VPID))
cap->vmx_ept_vpid_cap_supported_bits |= BX_CONST64(0x00000f01) << 32;
}
void BX_CPU_C::init_vmfunc_capabilities(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// vm functions
// -----------------------------------------------------------
// [00] EPTP switching
// [63-01] reserved
cap->vmx_vmfunc_supported_bits = 0;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPTP_SWITCHING))
cap->vmx_vmfunc_supported_bits |= VMX_VMFUNC_EPTP_SWITCHING_MASK;
}
#endif
void BX_CPU_C::init_pin_based_vmexec_ctrls(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// pin based vm exec controls
// -----------------------------------------------------------
// [00] External Interrupt Exiting
// 1 [01] Reserved (must be '1)
// 1 [02] Reserved (must be '1)
// [03] NMI Exiting
// 1 [04] Reserved (must be '1)
// [05] Virtual NMI (require Virtual NMI support)
// [06] Activate VMX Preemption Timer (require VMX Preemption Timer support)
// [07] Process Posted interrupts
cap->vmx_pin_vmexec_ctrl_supported_bits =
VMX_VM_EXEC_CTRL1_EXTERNAL_INTERRUPT_VMEXIT |
VMX_VM_EXEC_CTRL1_NMI_EXITING;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VIRTUAL_NMI))
cap->vmx_pin_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL1_VIRTUAL_NMI;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PREEMPTION_TIMER))
cap->vmx_pin_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL1_VMX_PREEMPTION_TIMER_VMEXIT;
#endif
}
void BX_CPU_C::init_primary_proc_based_vmexec_ctrls(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// proc based vm exec controls
// -----------------------------------------------------------
// 0 [00] Reserved (must be '0)
// 1 [01] Reserved (must be '1)
// [02] Interrupt Window Exiting
// [03] TSC Offset Enable
// 1 [06-04] Reserved (must be '1)
// [07] HLT Exiting
// 1 [08] Reserved (must be '1)
// [09] INVLPG Exiting
// [10] MWAIT Exiting (require MONITOR/MWAIT support)
// [11] RDPMC Exiting
// [12] RDTSC Exiting
// 1 [14-13] Reserved (must be '1)
// 1 [15] CR3 Write Exiting (legacy must be '1, introduced with EPT support)
// 1 [16] CR3 Read Exiting (legacy must be '1, introduced with EPT support)
// 0 [18-17] Reserved (must be '0)
// [19] CR8 Write Exiting (require TPR Shadow support, require x86-64 support)
// [20] CR8 Read Exiting (require TPR Shadow support, require x86-64 support)
// [21] TPR Shadow Enable (require TPR Shadow support, require x86-64 support)
// [22] NMI Window Exiting (require Virtual NMI support)
// [23] DRx Access Exiting
// [24] I/O Access Exiting
// [25] I/O Bitmaps
// 1 [26] Reserved (must be '1)
// [27] Monitor Trap Flag Enable (require Monitor Trap Flag support)
// [28] MSR Bitmaps
// [29] MONITOR Exiting (require MONITOR/MWAIT support)
// [30] PAUSE Exiting
// [31] Secondary proc-based vmexec controls
cap->vmx_proc_vmexec_ctrl_supported_bits =
VMX_VM_EXEC_CTRL2_INTERRUPT_WINDOW_VMEXIT |
VMX_VM_EXEC_CTRL2_TSC_OFFSET |
VMX_VM_EXEC_CTRL2_HLT_VMEXIT |
VMX_VM_EXEC_CTRL2_INVLPG_VMEXIT |
VMX_VM_EXEC_CTRL2_RDPMC_VMEXIT |
VMX_VM_EXEC_CTRL2_RDTSC_VMEXIT |
VMX_VM_EXEC_CTRL2_DRx_ACCESS_VMEXIT |
VMX_VM_EXEC_CTRL2_IO_VMEXIT |
VMX_VM_EXEC_CTRL2_IO_BITMAPS |
VMX_VM_EXEC_CTRL2_MSR_BITMAPS |
VMX_VM_EXEC_CTRL2_PAUSE_VMEXIT;
#if BX_SUPPORT_MONITOR_MWAIT
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_MONITOR_MWAIT)) {
cap->vmx_proc_vmexec_ctrl_supported_bits |=
VMX_VM_EXEC_CTRL2_MWAIT_VMEXIT | VMX_VM_EXEC_CTRL2_MONITOR_VMEXIT;
}
#endif
#if BX_SUPPORT_X86_64
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_TPR_SHADOW)) {
cap->vmx_proc_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL2_TPR_SHADOW;
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_LONG_MODE))
cap->vmx_proc_vmexec_ctrl_supported_bits |=
VMX_VM_EXEC_CTRL2_CR8_WRITE_VMEXIT | VMX_VM_EXEC_CTRL2_CR8_READ_VMEXIT;
}
#endif
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VIRTUAL_NMI))
cap->vmx_proc_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL2_NMI_WINDOW_EXITING;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_MONITOR_TRAP_FLAG))
cap->vmx_proc_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL2_MONITOR_TRAP_FLAG;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT)) {
cap->vmx_proc_vmexec_ctrl_supported_bits |=
VMX_VM_EXEC_CTRL2_CR3_WRITE_VMEXIT | VMX_VM_EXEC_CTRL2_CR3_READ_VMEXIT;
}
#endif
// enable secondary vm exec controls if there are secondary proc-based vmexec controls present
if (cap->vmx_vmexec_ctrl2_supported_bits != 0)
cap->vmx_proc_vmexec_ctrl_supported_bits |= VMX_VM_EXEC_CTRL2_SECONDARY_CONTROLS;
}
void BX_CPU_C::init_secondary_proc_based_vmexec_ctrls(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// secondary proc based vm exec controls
// -----------------------------------------------------------
// [00] Apic Virtualization (require x86-64 for TPR shadow)
// [01] EPT Enable (require x86-64 for 4-level page walk)
// [02] Descriptor Table Exiting
// [03] Enable RDTSCP instruction (RDTSCP will #UD if not set)
// [04] Virtualize X2APIC Mode (doesn't require actual X2APIC to be enabled)
// [05] VPID Enable
// [06] WBINVD Exiting
// [07] Unrestricted Guest (require EPT)
// [08] Virtualize Apic Registers
// [09] Virtualize Interrupt Delivery
// [10] PAUSE Loop Exiting
// [11] RDRAND Exiting (require RDRAND instruction support)
// [12] Enable INVPCID instruction (require INVPCID instruction support)
// [13] Enable VM Functions
// [14] Enable VMCS Shadowing
// [15] Reserved (must be '0)
// [16] RDSEED Exiting (require RDSEED instruction support)
// [17] Page Modification Logging Enable
// [18] Support for EPT Violation (#VE) exception
// [19] Reserved (must be '0)
// [20] XSAVES Exiting
// [21] Reserved (must be '0)
// [22] Mode Based Execution Control (MBE) (not implemented yet)
// [23] Sub Page Protection
// [24] Reserved (must be '0)
// [25] Enable TSC Scaling
cap->vmx_vmexec_ctrl2_supported_bits = 0;
#if BX_SUPPORT_X86_64
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_APIC_VIRTUALIZATION))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VIRTUALIZE_APIC_ACCESSES;
#endif
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_EPT_ENABLE;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_DESCRIPTOR_TABLE_EXIT))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_DESCRIPTOR_TABLE_VMEXIT;
#endif
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_RDTSCP))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_RDTSCP;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_X2APIC_VIRTUALIZATION))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VIRTUALIZE_X2APIC_MODE;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VPID))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VPID_ENABLE;
#endif
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_WBINVD_VMEXIT))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_WBINVD_VMEXIT;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_UNRESTRICTED_GUEST))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_UNRESTRICTED_GUEST;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VINTR_DELIVERY))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VIRTUALIZE_APIC_REGISTERS | VMX_VM_EXEC_CTRL3_VIRTUAL_INT_DELIVERY;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAUSE_LOOP_EXITING))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_PAUSE_LOOP_VMEXIT;
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_INVPCID))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_INVPCID;
#endif
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_RDRAND))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_RDRAND_VMEXIT;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VMCS_SHADOWING))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VMCS_SHADOWING;
#endif
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_RDSEED))
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_RDSEED_VMEXIT;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PML)) {
if (! BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT))
BX_PANIC(("VMX PML feature requires EPT support !"));
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_PML_ENABLE;
}
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT_EXCEPTION)) {
if (! BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPTP_SWITCHING))
BX_PANIC(("#VE exception feature requires EPTP switching support !"));
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_EPT_VIOLATION_EXCEPTION;
}
#endif
#if BX_SUPPORT_VMX >= 2
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_XSAVES)) {
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_XSAVES_XRSTORS;
}
#endif
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_SPP)) {
if (! BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT))
BX_PANIC(("VMX SPP feature requires EPT support !"));
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_SUBPAGE_WR_PROTECT_CTRL;
}
#endif
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_TSC_SCALING)) {
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_TSC_SCALING;
}
#if BX_SUPPORT_VMX >= 2
// enable vm functions secondary vmexec control if there are supported vmfunctions
if (cap->vmx_vmfunc_supported_bits != 0)
cap->vmx_vmexec_ctrl2_supported_bits |= VMX_VM_EXEC_CTRL3_VMFUNC_ENABLE;
#endif
}
void BX_CPU_C::init_vmexit_ctrls(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// vmexit controls
// -----------------------------------------------------------
// 1 [01-00] Reserved (must be '1)
// 1 [02] Save guest MSR_DEBUGCTL on VMEXIT (legacy must be '1)
// 1 [08-03] Reserved (must be '1)
// [09] Host Address Space Size (x86-64 host, x86-64 support required)
// 1 [11-10] Reserved (must be '1)
// [12] Load host MSR_PERF_GLOBAL_CTRL on VMEXIT
// 1 [14-13] Reserved (must be '1)
// [15] Acknowledge interrupts on VMEXIT
// 1 [17-16] Reserved (must be '1)
// [18] Save guest MSR_PAT on VMEXIT
// [19] Load host MSR_PAT on VMEXIT
// [20] Save guest MSR_EFER on VMEXIT
// [21] Load host MSR_EFER on VMEXIT
// [22] Save VMX preemption timer counter on VMEXIT
// [28] Save host CET state on VMEXIT
// [29] Save host MSR_IA32_PKRS on VMEXIT
cap->vmx_vmexit_ctrl_supported_bits =
VMX_VMEXIT_CTRL1_INTA_ON_VMEXIT | VMX_VMEXIT_CTRL1_SAVE_DBG_CTRLS;
#if BX_SUPPORT_X86_64
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_LONG_MODE))
cap->vmx_vmexit_ctrl_supported_bits |= VMX_VMEXIT_CTRL1_HOST_ADDR_SPACE_SIZE;
#endif
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PERF_GLOBAL_CTRL))
cap->vmx_vmexit_ctrl_supported_bits |= VMX_VMEXIT_CTRL1_LOAD_PERF_GLOBAL_CTRL_MSR;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAT)) {
cap->vmx_vmexit_ctrl_supported_bits |=
VMX_VMEXIT_CTRL1_STORE_PAT_MSR | VMX_VMEXIT_CTRL1_LOAD_PAT_MSR;
}
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EFER)) {
cap->vmx_vmexit_ctrl_supported_bits |=
VMX_VMEXIT_CTRL1_STORE_EFER_MSR | VMX_VMEXIT_CTRL1_LOAD_EFER_MSR;
}
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PREEMPTION_TIMER))
cap->vmx_vmexit_ctrl_supported_bits |= VMX_VMEXIT_CTRL1_STORE_VMX_PREEMPTION_TIMER;
#endif
#if BX_SUPPORT_CET
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_CET))
cap->vmx_vmexit_ctrl_supported_bits |= VMX_VMEXIT_CTRL1_LOAD_HOST_CET_STATE;
#endif
#if BX_SUPPORT_PKEYS
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_PKS))
cap->vmx_vmexit_ctrl_supported_bits |= VMX_VMEXIT_CTRL1_LOAD_HOST_PKRS;
#endif
}
void BX_CPU_C::init_vmentry_ctrls(void)
{
struct bx_VMX_Cap *cap = &BX_CPU_THIS_PTR vmx_cap;
// vmentry controls
// -----------------------------------------------------------
// 1 [01-00] Reserved (must be '1)
// 1 [02] Load MSR_DEBUGCTL on VMEXIT (legacy must be '1)
// 1 [08-03] Reserved (must be '1)
// [09] x86-64 guest (x86-64 support required)
// [10] Enter to SMM mode
// [11] Deactivate Dual SMM Monitor treatment
// 1 [12] Reserved (must be '1)
// [13] Load guest MSR_PERF_GLOBAL_CTRL
// [14] Load guest MSR_PAT
// [15] Load guest MSR_EFER
// [17] Load guest CET state
// [17] Load guest MSR_IA32_PKRS value
cap->vmx_vmentry_ctrl_supported_bits = VMX_VMENTRY_CTRL1_LOAD_DBG_CTRLS |
VMX_VMENTRY_CTRL1_SMM_ENTER |
VMX_VMENTRY_CTRL1_DEACTIVATE_DUAL_MONITOR_TREATMENT;
#if BX_SUPPORT_X86_64
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_LONG_MODE))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_X86_64_GUEST;
#endif
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PERF_GLOBAL_CTRL))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_LOAD_PERF_GLOBAL_CTRL_MSR;
#if BX_SUPPORT_VMX >= 2
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_PAT))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_LOAD_PAT_MSR;
if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EFER))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_LOAD_EFER_MSR;
#endif
#if BX_SUPPORT_CET
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_CET))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_LOAD_GUEST_CET_STATE;
#endif
#if BX_SUPPORT_PKEYS
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_ISA_PKS))
cap->vmx_vmentry_ctrl_supported_bits |= VMX_VMENTRY_CTRL1_LOAD_GUEST_PKRS;
#endif
}
#endif // BX_SUPPORT_VMX
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