I found 'vmlaunch' instruction failed with vm instruction error of 7.
I checked Intel's SDM, it means 'VM entry with invalid control field'.
I double checked the VM_entry_control, VM_exit_control, VM_exec_control, but could NOT find anything wrong. I am using EPTP for VM execution (VM is in real mode). Below is the control fields, and VMX capabilities. Host CPU info is as follows.
Linux kernel is 3.10, and 4.4.0.
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
stepping : 2
microcode : 0x37
cpu MHz : 2391.223
cache size : 15360 KB
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
0x0000001F = control_VMX_pin_based
0xA50061F2 = control_VMX_cpu_based
0x00000082 = control_VMX_proc2_based
0x00000000 = control_exception_bitmap
0x00000000 = control_pagefault_errorcode_mask
0xFFFFFFFF = control_pagefault_errorcode_match
0x00000002 = control_CR3_target_count
0x00036FFB = control_VM_exit_controls
0x000011FB = control_VM_entry_controls
0x00000000 = control_VM_entry_interruption_information
0x00000000 = control_VM_entry_exception_errorcode
0x00000000 = control_VM_entry_instruction_length
0x0000000000000020 = control_CR0_mask
0x0000000000002000 = control_CR4_mask
0x0000000000000020 = control_CR0_shadow
0x0000000000002000 = control_CR4_shadow
0x0000000000000000 = control_CR3_target0
0x0000000124FCE000 = control_CR3_target1
0x0000000000000000 = control_CR3_target2
0x0000000000000000 = control_CR3_target3
Host VMX capabilities are as follows,
VMX-Capability Model-Specific Registers
00D8100000000001 = IA32_VMX_BASIC_MSR
0000003F00000016 = IA32_VMX_PINBASED_CTLS_MSR
FFF9FFFE0401E172 = IA32_VMX_PROCBASED_CTLS_MSR
0033FFFF00036DFF = IA32_VMX_EXIT_CTLS_MSR
0000B3FF000011FF = IA32_VMX_ENTRY_CTLS_MSR
00000000000401E0 = IA32_VMX_MISC_MSR
0000000080000021 = IA32_VMX_CR0_FIXED0_MSR
00000000FFFFFFFF = IA32_VMX_CR0_FIXED1_MSR
0000000000002000 = IA32_VMX_CR4_FIXED0_MSR
00000000000427FF = IA32_VMX_CR4_FIXED1_MSR
000000000000005A = IA32_VMX_VMCS_ENUM_MSR
000000EE00000000 = IA32_VMX_PROCBASED_CTLS2
00000F0106114041 = IA32_VMX_EPT_VPID_CAP
0000003F00000016 = IA32_VMX_TRUE_PINBASED_CTLS
FFF9FFFE04006172 = IA32_VMX_TRUE_PROCBASED_CTLS
0033FFFF00036DFB = IA32_VMX_TRUE_EXIT_CTLS
0000B3FF000011FB = IA32_VMX_TRUE_ENTRY_CTLS
