Commit 609363cf authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: nVMX: Move vmcs12 code to dedicated files 



vmcs12 is the KVM-defined struct used to track a nested VMCS, e.g. a
VMCS created by L1 for L2.

Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent cb1d474b

arch/x86/kvm/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ 
			   i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \

			   hyperv.o page_track.o debugfs.o



kvm-intel-y		+= vmx/vmx.o vmx/pmu_intel.o

kvm-intel-y		+= vmx/vmx.o vmx/pmu_intel.o vmx/vmcs12.o

kvm-amd-y		+= svm.o pmu_amd.o



obj-$(CONFIG_KVM)	+= kvm.o

arch/x86/kvm/vmx/vmcs.h

+3 −1
Original line number Diff line number Diff line
@@ -2,9 +2,11 @@ 
#ifndef __KVM_X86_VMX_VMCS_H

#define __KVM_X86_VMX_VMCS_H



#include <linux/list.h>

#include <linux/ktime.h>

#include <linux/list.h>

#include <linux/nospec.h>



#include <asm/kvm.h>

#include <asm/vmx.h>



#include "capabilities.h"

arch/x86/kvm/vmx/vmcs12.c

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// SPDX-License-Identifier: GPL-2.0



#include "vmcs12.h"



#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))

#define VMCS12_OFFSET(x) offsetof(struct vmcs12, x)

#define FIELD(number, name)	[ROL16(number, 6)] = VMCS12_OFFSET(name)

#define FIELD64(number, name)						\

	FIELD(number, name),						\

	[ROL16(number##_HIGH, 6)] = VMCS12_OFFSET(name) + sizeof(u32)



const unsigned short vmcs_field_to_offset_table[] = {

	FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id),

	FIELD(POSTED_INTR_NV, posted_intr_nv),

	FIELD(GUEST_ES_SELECTOR, guest_es_selector),

	FIELD(GUEST_CS_SELECTOR, guest_cs_selector),

	FIELD(GUEST_SS_SELECTOR, guest_ss_selector),

	FIELD(GUEST_DS_SELECTOR, guest_ds_selector),

	FIELD(GUEST_FS_SELECTOR, guest_fs_selector),

	FIELD(GUEST_GS_SELECTOR, guest_gs_selector),

	FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector),

	FIELD(GUEST_TR_SELECTOR, guest_tr_selector),

	FIELD(GUEST_INTR_STATUS, guest_intr_status),

	FIELD(GUEST_PML_INDEX, guest_pml_index),

	FIELD(HOST_ES_SELECTOR, host_es_selector),

	FIELD(HOST_CS_SELECTOR, host_cs_selector),

	FIELD(HOST_SS_SELECTOR, host_ss_selector),

	FIELD(HOST_DS_SELECTOR, host_ds_selector),

	FIELD(HOST_FS_SELECTOR, host_fs_selector),

	FIELD(HOST_GS_SELECTOR, host_gs_selector),

	FIELD(HOST_TR_SELECTOR, host_tr_selector),

	FIELD64(IO_BITMAP_A, io_bitmap_a),

	FIELD64(IO_BITMAP_B, io_bitmap_b),

	FIELD64(MSR_BITMAP, msr_bitmap),

	FIELD64(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr),

	FIELD64(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr),

	FIELD64(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr),

	FIELD64(PML_ADDRESS, pml_address),

	FIELD64(TSC_OFFSET, tsc_offset),

	FIELD64(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr),

	FIELD64(APIC_ACCESS_ADDR, apic_access_addr),

	FIELD64(POSTED_INTR_DESC_ADDR, posted_intr_desc_addr),

	FIELD64(VM_FUNCTION_CONTROL, vm_function_control),

	FIELD64(EPT_POINTER, ept_pointer),

	FIELD64(EOI_EXIT_BITMAP0, eoi_exit_bitmap0),

	FIELD64(EOI_EXIT_BITMAP1, eoi_exit_bitmap1),

	FIELD64(EOI_EXIT_BITMAP2, eoi_exit_bitmap2),

	FIELD64(EOI_EXIT_BITMAP3, eoi_exit_bitmap3),

	FIELD64(EPTP_LIST_ADDRESS, eptp_list_address),

	FIELD64(VMREAD_BITMAP, vmread_bitmap),

	FIELD64(VMWRITE_BITMAP, vmwrite_bitmap),

	FIELD64(XSS_EXIT_BITMAP, xss_exit_bitmap),

	FIELD64(GUEST_PHYSICAL_ADDRESS, guest_physical_address),

	FIELD64(VMCS_LINK_POINTER, vmcs_link_pointer),

	FIELD64(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl),

	FIELD64(GUEST_IA32_PAT, guest_ia32_pat),

	FIELD64(GUEST_IA32_EFER, guest_ia32_efer),

	FIELD64(GUEST_IA32_PERF_GLOBAL_CTRL, guest_ia32_perf_global_ctrl),

	FIELD64(GUEST_PDPTR0, guest_pdptr0),

	FIELD64(GUEST_PDPTR1, guest_pdptr1),

	FIELD64(GUEST_PDPTR2, guest_pdptr2),

	FIELD64(GUEST_PDPTR3, guest_pdptr3),

	FIELD64(GUEST_BNDCFGS, guest_bndcfgs),

	FIELD64(HOST_IA32_PAT, host_ia32_pat),

	FIELD64(HOST_IA32_EFER, host_ia32_efer),

	FIELD64(HOST_IA32_PERF_GLOBAL_CTRL, host_ia32_perf_global_ctrl),

	FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control),

	FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control),

	FIELD(EXCEPTION_BITMAP, exception_bitmap),

	FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask),

	FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match),

	FIELD(CR3_TARGET_COUNT, cr3_target_count),

	FIELD(VM_EXIT_CONTROLS, vm_exit_controls),

	FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count),

	FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count),

	FIELD(VM_ENTRY_CONTROLS, vm_entry_controls),

	FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count),

	FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field),

	FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE, vm_entry_exception_error_code),

	FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len),

	FIELD(TPR_THRESHOLD, tpr_threshold),

	FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control),

	FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error),

	FIELD(VM_EXIT_REASON, vm_exit_reason),

	FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info),

	FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code),

	FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field),

	FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code),

	FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len),

	FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info),

	FIELD(GUEST_ES_LIMIT, guest_es_limit),

	FIELD(GUEST_CS_LIMIT, guest_cs_limit),

	FIELD(GUEST_SS_LIMIT, guest_ss_limit),

	FIELD(GUEST_DS_LIMIT, guest_ds_limit),

	FIELD(GUEST_FS_LIMIT, guest_fs_limit),

	FIELD(GUEST_GS_LIMIT, guest_gs_limit),

	FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit),

	FIELD(GUEST_TR_LIMIT, guest_tr_limit),

	FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit),

	FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit),

	FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes),

	FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes),

	FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes),

	FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes),

	FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes),

	FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes),

	FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes),

	FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes),

	FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info),

	FIELD(GUEST_ACTIVITY_STATE, guest_activity_state),

	FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs),

	FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs),

	FIELD(VMX_PREEMPTION_TIMER_VALUE, vmx_preemption_timer_value),

	FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask),

	FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask),

	FIELD(CR0_READ_SHADOW, cr0_read_shadow),

	FIELD(CR4_READ_SHADOW, cr4_read_shadow),

	FIELD(CR3_TARGET_VALUE0, cr3_target_value0),

	FIELD(CR3_TARGET_VALUE1, cr3_target_value1),

	FIELD(CR3_TARGET_VALUE2, cr3_target_value2),

	FIELD(CR3_TARGET_VALUE3, cr3_target_value3),

	FIELD(EXIT_QUALIFICATION, exit_qualification),

	FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address),

	FIELD(GUEST_CR0, guest_cr0),

	FIELD(GUEST_CR3, guest_cr3),

	FIELD(GUEST_CR4, guest_cr4),

	FIELD(GUEST_ES_BASE, guest_es_base),

	FIELD(GUEST_CS_BASE, guest_cs_base),

	FIELD(GUEST_SS_BASE, guest_ss_base),

	FIELD(GUEST_DS_BASE, guest_ds_base),

	FIELD(GUEST_FS_BASE, guest_fs_base),

	FIELD(GUEST_GS_BASE, guest_gs_base),

	FIELD(GUEST_LDTR_BASE, guest_ldtr_base),

	FIELD(GUEST_TR_BASE, guest_tr_base),

	FIELD(GUEST_GDTR_BASE, guest_gdtr_base),

	FIELD(GUEST_IDTR_BASE, guest_idtr_base),

	FIELD(GUEST_DR7, guest_dr7),

	FIELD(GUEST_RSP, guest_rsp),

	FIELD(GUEST_RIP, guest_rip),

	FIELD(GUEST_RFLAGS, guest_rflags),

	FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions),

	FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp),

	FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip),

	FIELD(HOST_CR0, host_cr0),

	FIELD(HOST_CR3, host_cr3),

	FIELD(HOST_CR4, host_cr4),

	FIELD(HOST_FS_BASE, host_fs_base),

	FIELD(HOST_GS_BASE, host_gs_base),

	FIELD(HOST_TR_BASE, host_tr_base),

	FIELD(HOST_GDTR_BASE, host_gdtr_base),

	FIELD(HOST_IDTR_BASE, host_idtr_base),

	FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp),

	FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip),

	FIELD(HOST_RSP, host_rsp),

	FIELD(HOST_RIP, host_rip),

};

const unsigned int nr_vmcs12_fields = ARRAY_SIZE(vmcs_field_to_offset_table);

arch/x86/kvm/vmx/vmcs12.h

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Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __KVM_X86_VMX_VMCS12_H

#define __KVM_X86_VMX_VMCS12_H



#include <linux/build_bug.h>



#include "vmcs.h"



/*

 * struct vmcs12 describes the state that our guest hypervisor (L1) keeps for a

 * single nested guest (L2), hence the name vmcs12. Any VMX implementation has

 * a VMCS structure, and vmcs12 is our emulated VMX's VMCS. This structure is

 * stored in guest memory specified by VMPTRLD, but is opaque to the guest,

 * which must access it using VMREAD/VMWRITE/VMCLEAR instructions.

 * More than one of these structures may exist, if L1 runs multiple L2 guests.

 * nested_vmx_run() will use the data here to build the vmcs02: a VMCS for the

 * underlying hardware which will be used to run L2.

 * This structure is packed to ensure that its layout is identical across

 * machines (necessary for live migration).

 *

 * IMPORTANT: Changing the layout of existing fields in this structure

 * will break save/restore compatibility with older kvm releases. When

 * adding new fields, either use space in the reserved padding* arrays

 * or add the new fields to the end of the structure.

 */

typedef u64 natural_width;

struct __packed vmcs12 {

	/* According to the Intel spec, a VMCS region must start with the

	 * following two fields. Then follow implementation-specific data.

	 */

	struct vmcs_hdr hdr;

	u32 abort;



	u32 launch_state; /* set to 0 by VMCLEAR, to 1 by VMLAUNCH */

	u32 padding[7]; /* room for future expansion */



	u64 io_bitmap_a;

	u64 io_bitmap_b;

	u64 msr_bitmap;

	u64 vm_exit_msr_store_addr;

	u64 vm_exit_msr_load_addr;

	u64 vm_entry_msr_load_addr;

	u64 tsc_offset;

	u64 virtual_apic_page_addr;

	u64 apic_access_addr;

	u64 posted_intr_desc_addr;

	u64 ept_pointer;

	u64 eoi_exit_bitmap0;

	u64 eoi_exit_bitmap1;

	u64 eoi_exit_bitmap2;

	u64 eoi_exit_bitmap3;

	u64 xss_exit_bitmap;

	u64 guest_physical_address;

	u64 vmcs_link_pointer;

	u64 guest_ia32_debugctl;

	u64 guest_ia32_pat;

	u64 guest_ia32_efer;

	u64 guest_ia32_perf_global_ctrl;

	u64 guest_pdptr0;

	u64 guest_pdptr1;

	u64 guest_pdptr2;

	u64 guest_pdptr3;

	u64 guest_bndcfgs;

	u64 host_ia32_pat;

	u64 host_ia32_efer;

	u64 host_ia32_perf_global_ctrl;

	u64 vmread_bitmap;

	u64 vmwrite_bitmap;

	u64 vm_function_control;

	u64 eptp_list_address;

	u64 pml_address;

	u64 padding64[3]; /* room for future expansion */

	/*

	 * To allow migration of L1 (complete with its L2 guests) between

	 * machines of different natural widths (32 or 64 bit), we cannot have

	 * unsigned long fields with no explicit size. We use u64 (aliased

	 * natural_width) instead. Luckily, x86 is little-endian.

	 */

	natural_width cr0_guest_host_mask;

	natural_width cr4_guest_host_mask;

	natural_width cr0_read_shadow;

	natural_width cr4_read_shadow;

	natural_width cr3_target_value0;

	natural_width cr3_target_value1;

	natural_width cr3_target_value2;

	natural_width cr3_target_value3;

	natural_width exit_qualification;

	natural_width guest_linear_address;

	natural_width guest_cr0;

	natural_width guest_cr3;

	natural_width guest_cr4;

	natural_width guest_es_base;

	natural_width guest_cs_base;

	natural_width guest_ss_base;

	natural_width guest_ds_base;

	natural_width guest_fs_base;

	natural_width guest_gs_base;

	natural_width guest_ldtr_base;

	natural_width guest_tr_base;

	natural_width guest_gdtr_base;

	natural_width guest_idtr_base;

	natural_width guest_dr7;

	natural_width guest_rsp;

	natural_width guest_rip;

	natural_width guest_rflags;

	natural_width guest_pending_dbg_exceptions;

	natural_width guest_sysenter_esp;

	natural_width guest_sysenter_eip;

	natural_width host_cr0;

	natural_width host_cr3;

	natural_width host_cr4;

	natural_width host_fs_base;

	natural_width host_gs_base;

	natural_width host_tr_base;

	natural_width host_gdtr_base;

	natural_width host_idtr_base;

	natural_width host_ia32_sysenter_esp;

	natural_width host_ia32_sysenter_eip;

	natural_width host_rsp;

	natural_width host_rip;

	natural_width paddingl[8]; /* room for future expansion */

	u32 pin_based_vm_exec_control;

	u32 cpu_based_vm_exec_control;

	u32 exception_bitmap;

	u32 page_fault_error_code_mask;

	u32 page_fault_error_code_match;

	u32 cr3_target_count;

	u32 vm_exit_controls;

	u32 vm_exit_msr_store_count;

	u32 vm_exit_msr_load_count;

	u32 vm_entry_controls;

	u32 vm_entry_msr_load_count;

	u32 vm_entry_intr_info_field;

	u32 vm_entry_exception_error_code;

	u32 vm_entry_instruction_len;

	u32 tpr_threshold;

	u32 secondary_vm_exec_control;

	u32 vm_instruction_error;

	u32 vm_exit_reason;

	u32 vm_exit_intr_info;

	u32 vm_exit_intr_error_code;

	u32 idt_vectoring_info_field;

	u32 idt_vectoring_error_code;

	u32 vm_exit_instruction_len;

	u32 vmx_instruction_info;

	u32 guest_es_limit;

	u32 guest_cs_limit;

	u32 guest_ss_limit;

	u32 guest_ds_limit;

	u32 guest_fs_limit;

	u32 guest_gs_limit;

	u32 guest_ldtr_limit;

	u32 guest_tr_limit;

	u32 guest_gdtr_limit;

	u32 guest_idtr_limit;

	u32 guest_es_ar_bytes;

	u32 guest_cs_ar_bytes;

	u32 guest_ss_ar_bytes;

	u32 guest_ds_ar_bytes;

	u32 guest_fs_ar_bytes;

	u32 guest_gs_ar_bytes;

	u32 guest_ldtr_ar_bytes;

	u32 guest_tr_ar_bytes;

	u32 guest_interruptibility_info;

	u32 guest_activity_state;

	u32 guest_sysenter_cs;

	u32 host_ia32_sysenter_cs;

	u32 vmx_preemption_timer_value;

	u32 padding32[7]; /* room for future expansion */

	u16 virtual_processor_id;

	u16 posted_intr_nv;

	u16 guest_es_selector;

	u16 guest_cs_selector;

	u16 guest_ss_selector;

	u16 guest_ds_selector;

	u16 guest_fs_selector;

	u16 guest_gs_selector;

	u16 guest_ldtr_selector;

	u16 guest_tr_selector;

	u16 guest_intr_status;

	u16 host_es_selector;

	u16 host_cs_selector;

	u16 host_ss_selector;

	u16 host_ds_selector;

	u16 host_fs_selector;

	u16 host_gs_selector;

	u16 host_tr_selector;

	u16 guest_pml_index;

};



/*

 * VMCS12_REVISION is an arbitrary id that should be changed if the content or

 * layout of struct vmcs12 is changed. MSR_IA32_VMX_BASIC returns this id, and

 * VMPTRLD verifies that the VMCS region that L1 is loading contains this id.

 *

 * IMPORTANT: Changing this value will break save/restore compatibility with

 * older kvm releases.

 */

#define VMCS12_REVISION 0x11e57ed0



/*

 * VMCS12_SIZE is the number of bytes L1 should allocate for the VMXON region

 * and any VMCS region. Although only sizeof(struct vmcs12) are used by the

 * current implementation, 4K are reserved to avoid future complications.

 */

#define VMCS12_SIZE 0x1000



/*

 * VMCS12_MAX_FIELD_INDEX is the highest index value used in any

 * supported VMCS12 field encoding.

 */

#define VMCS12_MAX_FIELD_INDEX 0x17



/*

 * For save/restore compatibility, the vmcs12 field offsets must not change.

 */

#define CHECK_OFFSET(field, loc)				\

	BUILD_BUG_ON_MSG(offsetof(struct vmcs12, field) != (loc),	\

		"Offset of " #field " in struct vmcs12 has changed.")



static inline void vmx_check_vmcs12_offsets(void)

{

	CHECK_OFFSET(hdr, 0);

	CHECK_OFFSET(abort, 4);

	CHECK_OFFSET(launch_state, 8);

	CHECK_OFFSET(io_bitmap_a, 40);

	CHECK_OFFSET(io_bitmap_b, 48);

	CHECK_OFFSET(msr_bitmap, 56);

	CHECK_OFFSET(vm_exit_msr_store_addr, 64);

	CHECK_OFFSET(vm_exit_msr_load_addr, 72);

	CHECK_OFFSET(vm_entry_msr_load_addr, 80);

	CHECK_OFFSET(tsc_offset, 88);

	CHECK_OFFSET(virtual_apic_page_addr, 96);

	CHECK_OFFSET(apic_access_addr, 104);

	CHECK_OFFSET(posted_intr_desc_addr, 112);

	CHECK_OFFSET(ept_pointer, 120);

	CHECK_OFFSET(eoi_exit_bitmap0, 128);

	CHECK_OFFSET(eoi_exit_bitmap1, 136);

	CHECK_OFFSET(eoi_exit_bitmap2, 144);

	CHECK_OFFSET(eoi_exit_bitmap3, 152);

	CHECK_OFFSET(xss_exit_bitmap, 160);

	CHECK_OFFSET(guest_physical_address, 168);

	CHECK_OFFSET(vmcs_link_pointer, 176);

	CHECK_OFFSET(guest_ia32_debugctl, 184);

	CHECK_OFFSET(guest_ia32_pat, 192);

	CHECK_OFFSET(guest_ia32_efer, 200);

	CHECK_OFFSET(guest_ia32_perf_global_ctrl, 208);

	CHECK_OFFSET(guest_pdptr0, 216);

	CHECK_OFFSET(guest_pdptr1, 224);

	CHECK_OFFSET(guest_pdptr2, 232);

	CHECK_OFFSET(guest_pdptr3, 240);

	CHECK_OFFSET(guest_bndcfgs, 248);

	CHECK_OFFSET(host_ia32_pat, 256);

	CHECK_OFFSET(host_ia32_efer, 264);

	CHECK_OFFSET(host_ia32_perf_global_ctrl, 272);

	CHECK_OFFSET(vmread_bitmap, 280);

	CHECK_OFFSET(vmwrite_bitmap, 288);

	CHECK_OFFSET(vm_function_control, 296);

	CHECK_OFFSET(eptp_list_address, 304);

	CHECK_OFFSET(pml_address, 312);

	CHECK_OFFSET(cr0_guest_host_mask, 344);

	CHECK_OFFSET(cr4_guest_host_mask, 352);

	CHECK_OFFSET(cr0_read_shadow, 360);

	CHECK_OFFSET(cr4_read_shadow, 368);

	CHECK_OFFSET(cr3_target_value0, 376);

	CHECK_OFFSET(cr3_target_value1, 384);

	CHECK_OFFSET(cr3_target_value2, 392);

	CHECK_OFFSET(cr3_target_value3, 400);

	CHECK_OFFSET(exit_qualification, 408);

	CHECK_OFFSET(guest_linear_address, 416);

	CHECK_OFFSET(guest_cr0, 424);

	CHECK_OFFSET(guest_cr3, 432);

	CHECK_OFFSET(guest_cr4, 440);

	CHECK_OFFSET(guest_es_base, 448);

	CHECK_OFFSET(guest_cs_base, 456);

	CHECK_OFFSET(guest_ss_base, 464);

	CHECK_OFFSET(guest_ds_base, 472);

	CHECK_OFFSET(guest_fs_base, 480);

	CHECK_OFFSET(guest_gs_base, 488);

	CHECK_OFFSET(guest_ldtr_base, 496);

	CHECK_OFFSET(guest_tr_base, 504);

	CHECK_OFFSET(guest_gdtr_base, 512);

	CHECK_OFFSET(guest_idtr_base, 520);

	CHECK_OFFSET(guest_dr7, 528);

	CHECK_OFFSET(guest_rsp, 536);

	CHECK_OFFSET(guest_rip, 544);

	CHECK_OFFSET(guest_rflags, 552);

	CHECK_OFFSET(guest_pending_dbg_exceptions, 560);

	CHECK_OFFSET(guest_sysenter_esp, 568);

	CHECK_OFFSET(guest_sysenter_eip, 576);

	CHECK_OFFSET(host_cr0, 584);

	CHECK_OFFSET(host_cr3, 592);

	CHECK_OFFSET(host_cr4, 600);

	CHECK_OFFSET(host_fs_base, 608);

	CHECK_OFFSET(host_gs_base, 616);

	CHECK_OFFSET(host_tr_base, 624);

	CHECK_OFFSET(host_gdtr_base, 632);

	CHECK_OFFSET(host_idtr_base, 640);

	CHECK_OFFSET(host_ia32_sysenter_esp, 648);

	CHECK_OFFSET(host_ia32_sysenter_eip, 656);

	CHECK_OFFSET(host_rsp, 664);

	CHECK_OFFSET(host_rip, 672);

	CHECK_OFFSET(pin_based_vm_exec_control, 744);

	CHECK_OFFSET(cpu_based_vm_exec_control, 748);

	CHECK_OFFSET(exception_bitmap, 752);

	CHECK_OFFSET(page_fault_error_code_mask, 756);

	CHECK_OFFSET(page_fault_error_code_match, 760);

	CHECK_OFFSET(cr3_target_count, 764);

	CHECK_OFFSET(vm_exit_controls, 768);

	CHECK_OFFSET(vm_exit_msr_store_count, 772);

	CHECK_OFFSET(vm_exit_msr_load_count, 776);

	CHECK_OFFSET(vm_entry_controls, 780);

	CHECK_OFFSET(vm_entry_msr_load_count, 784);

	CHECK_OFFSET(vm_entry_intr_info_field, 788);

	CHECK_OFFSET(vm_entry_exception_error_code, 792);

	CHECK_OFFSET(vm_entry_instruction_len, 796);

	CHECK_OFFSET(tpr_threshold, 800);

	CHECK_OFFSET(secondary_vm_exec_control, 804);

	CHECK_OFFSET(vm_instruction_error, 808);

	CHECK_OFFSET(vm_exit_reason, 812);

	CHECK_OFFSET(vm_exit_intr_info, 816);

	CHECK_OFFSET(vm_exit_intr_error_code, 820);

	CHECK_OFFSET(idt_vectoring_info_field, 824);

	CHECK_OFFSET(idt_vectoring_error_code, 828);

	CHECK_OFFSET(vm_exit_instruction_len, 832);

	CHECK_OFFSET(vmx_instruction_info, 836);

	CHECK_OFFSET(guest_es_limit, 840);

	CHECK_OFFSET(guest_cs_limit, 844);

	CHECK_OFFSET(guest_ss_limit, 848);

	CHECK_OFFSET(guest_ds_limit, 852);

	CHECK_OFFSET(guest_fs_limit, 856);

	CHECK_OFFSET(guest_gs_limit, 860);

	CHECK_OFFSET(guest_ldtr_limit, 864);

	CHECK_OFFSET(guest_tr_limit, 868);

	CHECK_OFFSET(guest_gdtr_limit, 872);

	CHECK_OFFSET(guest_idtr_limit, 876);

	CHECK_OFFSET(guest_es_ar_bytes, 880);

	CHECK_OFFSET(guest_cs_ar_bytes, 884);

	CHECK_OFFSET(guest_ss_ar_bytes, 888);

	CHECK_OFFSET(guest_ds_ar_bytes, 892);

	CHECK_OFFSET(guest_fs_ar_bytes, 896);

	CHECK_OFFSET(guest_gs_ar_bytes, 900);

	CHECK_OFFSET(guest_ldtr_ar_bytes, 904);

	CHECK_OFFSET(guest_tr_ar_bytes, 908);

	CHECK_OFFSET(guest_interruptibility_info, 912);

	CHECK_OFFSET(guest_activity_state, 916);

	CHECK_OFFSET(guest_sysenter_cs, 920);

	CHECK_OFFSET(host_ia32_sysenter_cs, 924);

	CHECK_OFFSET(vmx_preemption_timer_value, 928);

	CHECK_OFFSET(virtual_processor_id, 960);

	CHECK_OFFSET(posted_intr_nv, 962);

	CHECK_OFFSET(guest_es_selector, 964);

	CHECK_OFFSET(guest_cs_selector, 966);

	CHECK_OFFSET(guest_ss_selector, 968);

	CHECK_OFFSET(guest_ds_selector, 970);

	CHECK_OFFSET(guest_fs_selector, 972);

	CHECK_OFFSET(guest_gs_selector, 974);

	CHECK_OFFSET(guest_ldtr_selector, 976);

	CHECK_OFFSET(guest_tr_selector, 978);

	CHECK_OFFSET(guest_intr_status, 980);

	CHECK_OFFSET(host_es_selector, 982);

	CHECK_OFFSET(host_cs_selector, 984);

	CHECK_OFFSET(host_ss_selector, 986);

	CHECK_OFFSET(host_ds_selector, 988);

	CHECK_OFFSET(host_fs_selector, 990);

	CHECK_OFFSET(host_gs_selector, 992);

	CHECK_OFFSET(host_tr_selector, 994);

	CHECK_OFFSET(guest_pml_index, 996);

}



extern const unsigned short vmcs_field_to_offset_table[];

extern const unsigned int nr_vmcs12_fields;



#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))



static inline short vmcs_field_to_offset(unsigned long field)

{

	unsigned short offset;

	unsigned int index;



	if (field >> 15)

		return -ENOENT;



	index = ROL16(field, 6);

	if (index >= nr_vmcs12_fields)

		return -ENOENT;



	index = array_index_nospec(index, nr_vmcs12_fields);

	offset = vmcs_field_to_offset_table[index];

	if (offset == 0)

		return -ENOENT;

	return offset;

}



#undef ROL16



/*

 * Read a vmcs12 field. Since these can have varying lengths and we return

 * one type, we chose the biggest type (u64) and zero-extend the return value

 * to that size. Note that the caller, handle_vmread, might need to use only

 * some of the bits we return here (e.g., on 32-bit guests, only 32 bits of

 * 64-bit fields are to be returned).

 */

static inline int vmcs12_read_any(struct vmcs12 *vmcs12,

				  unsigned long field, u64 *ret)

{

	short offset = vmcs_field_to_offset(field);

	char *p;



	if (offset < 0)

		return offset;



	p = (char *)vmcs12 + offset;



	switch (vmcs_field_width(field)) {

	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:

		*ret = *((natural_width *)p);

		return 0;

	case VMCS_FIELD_WIDTH_U16:

		*ret = *((u16 *)p);

		return 0;

	case VMCS_FIELD_WIDTH_U32:

		*ret = *((u32 *)p);

		return 0;

	case VMCS_FIELD_WIDTH_U64:

		*ret = *((u64 *)p);

		return 0;

	default:

		WARN_ON(1);

		return -ENOENT;

	}

}



static inline int vmcs12_write_any(struct vmcs12 *vmcs12,

				   unsigned long field, u64 field_value){

	short offset = vmcs_field_to_offset(field);

	char *p = (char *)vmcs12 + offset;



	if (offset < 0)

		return offset;



	switch (vmcs_field_width(field)) {

	case VMCS_FIELD_WIDTH_U16:

		*(u16 *)p = field_value;

		return 0;

	case VMCS_FIELD_WIDTH_U32:

		*(u32 *)p = field_value;

		return 0;

	case VMCS_FIELD_WIDTH_U64:

		*(u64 *)p = field_value;

		return 0;

	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:

		*(natural_width *)p = field_value;

		return 0;

	default:

		WARN_ON(1);

		return -ENOENT;

	}



}



#endif /* __KVM_X86_VMX_VMCS12_H */

arch/x86/kvm/vmx/vmx.c

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