Note: * should be available CPU Instruction, and - is not available.
List of CPU Instructions not available on the guest.
HTT * Hyperthreading enabled CET * Supports Control Flow Enforcement Technology Kernel CET - Kernel-mode CET Enabled User CET * User-mode CET Allowed HYPERVISOR * Hypervisor is present VMX - Supports Intel hardware-assisted virtualization SVM - Supports AMD hardware-assisted virtualization X64 * Supports 64-bit mode SMX - Supports Intel trusted execution SKINIT - Supports AMD SKINIT SGX - Supports Intel SGX NX * Supports no-execute page protection SMEP * Supports Supervisor Mode Execution Prevention SMAP * Supports Supervisor Mode Access Prevention PAGE1GB * Supports 1 GB large pages PAE * Supports > 32-bit physical addresses PAT * Supports Page Attribute Table PSE * Supports 4 MB pages PSE36 * Supports > 32-bit address 4 MB pages PGE * Supports global bit in page tables SS * Supports bus snooping for cache operations VME * Supports Virtual-8086 mode RDWRFSGSBASE * Supports direct GS/FS base access FPU * Implements i387 floating point instructions MMX * Supports MMX instruction set MMXEXT - Implements AMD MMX extensions 3DNOW - Supports 3DNow! instructions 3DNOWEXT - Supports 3DNow! extension instructions SSE * Supports Streaming SIMD Extensions SSE2 * Supports Streaming SIMD Extensions 2 SSE3 * Supports Streaming SIMD Extensions 3 SSSE3 * Supports Supplemental SIMD Extensions 3 SSE4a - Supports Streaming SIMDR Extensions 4a SSE4.1 * Supports Streaming SIMD Extensions 4.1 SSE4.2 * Supports Streaming SIMD Extensions 4.2 AES * Supports AES extensions AVX * Supports AVX instruction extensions AVX2 * Supports AVX2 instruction extensions AVX-512-F * Supports AVX-512 Foundation instructions AVX-512-DQ * Supports AVX-512 double and quadword instructions AVX-512-IFAMA * Supports AVX-512 integer Fused multiply-add instructions AVX-512-PF - Supports AVX-512 prefetch instructions AVX-512-ER - Supports AVX-512 exponential and reciprocal instructions AVX-512-CD * Supports AVX-512 conflict detection instructions AVX-512-BW * Supports AVX-512 byte and word instructions AVX-512-VL * Supports AVX-512 vector length instructions FMA * Supports FMA extensions using YMM state MSR * Implements RDMSR/WRMSR instructions MTRR * Supports Memory Type Range Registers XSAVE * Supports XSAVE/XRSTOR instructions OSXSAVE * Supports XSETBV/XGETBV instructions RDRAND * Supports RDRAND instruction RDSEED * Supports RDSEED instruction CMOV * Supports CMOVcc instruction CLFSH * Supports CLFLUSH instruction CX8 * Supports compare and exchange 8-byte instructions CX16 * Supports CMPXCHG16B instruction BMI1 * Supports bit manipulation extensions 1 BMI2 * Supports bit manipulation extensions 2 ADX * Supports ADCX/ADOX instructions DCA - Supports prefetch from memory-mapped device F16C * Supports half-precision instruction FXSR * Supports FXSAVE/FXSTOR instructions FFXSR - Supports optimized FXSAVE/FSRSTOR instruction MONITOR * Supports MONITOR and MWAIT instructions MOVBE * Supports MOVBE instruction ERMSB * Supports Enhanced REP MOVSB/STOSB PCLMULDQ * Supports PCLMULDQ instruction POPCNT * Supports POPCNT instruction LZCNT * Supports LZCNT instruction SEP * Supports fast system call instructions LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode HLE - Supports Hardware Lock Elision instructions RTM - Supports Restricted Transactional Memory instructions DE * Supports I/O breakpoints including CR4.DE DTES64 * Can write history of 64-bit branch addresses DS * Implements memory-resident debug buffer DS-CPL - Supports Debug Store feature with CPL PCID * Supports PCIDs and settable CR4.PCIDE INVPCID * Supports INVPCID instruction PDCM * Supports Performance Capabilities MSR RDTSCP * Supports RDTSCP instruction TSC * Supports RDTSC instruction TSC-DEADLINE * Local APIC supports one-shot deadline timer TSC-INVARIANT * TSC runs at constant rate xTPR * Supports disabling task priority messages EIST * Supports Enhanced Intel Speedstep ACPI * Implements MSR for power management TM * Implements thermal monitor circuitry TM2 * Implements Thermal Monitor 2 control APIC * Implements software-accessible local APIC x2APIC * Supports x2APIC CNXT-ID - L1 data cache mode adaptive or BIOS MCE * Supports Machine Check, INT18 and CR4.MCE MCA * Implements Machine Check Architecture PBE * Supports use of FERR#/PBE# pin PSN - Implements 96-bit processor serial number PREFETCHW * Supports PREFETCHW instructionBelow is a list of CPU instructions available on Hyper-V Windows 10 guest.
HTT * Hyperthreading enabled CET * Supports Control Flow Enforcement Technology Kernel CET - Kernel-mode CET Enabled User CET * User-mode CET Allowed HYPERVISOR * Hypervisor is present VMX - Supports Intel hardware-assisted virtualization SVM - Supports AMD hardware-assisted virtualization X64 * Supports 64-bit mode SMX - Supports Intel trusted execution SKINIT - Supports AMD SKINIT SGX - Supports Intel SGX NX * Supports no-execute page protection SMEP * Supports Supervisor Mode Execution Prevention SMAP * Supports Supervisor Mode Access Prevention PAGE1GB * Supports 1 GB large pages PAE * Supports > 32-bit physical addresses PAT * Supports Page Attribute Table PSE * Supports 4 MB pages PSE36 * Supports > 32-bit address 4 MB pages PGE * Supports global bit in page tables SS * Supports bus snooping for cache operations VME * Supports Virtual-8086 mode RDWRFSGSBASE * Supports direct GS/FS base access FPU * Implements i387 floating point instructions MMX * Supports MMX instruction set MMXEXT - Implements AMD MMX extensions 3DNOW - Supports 3DNow! instructions 3DNOWEXT - Supports 3DNow! extension instructions SSE * Supports Streaming SIMD Extensions SSE2 * Supports Streaming SIMD Extensions 2 SSE3 * Supports Streaming SIMD Extensions 3 SSSE3 * Supports Supplemental SIMD Extensions 3 SSE4a - Supports Streaming SIMDR Extensions 4a SSE4.1 * Supports Streaming SIMD Extensions 4.1 SSE4.2 * Supports Streaming SIMD Extensions 4.2 AES * Supports AES extensions AVX * Supports AVX instruction extensions AVX2 * Supports AVX2 instruction extensions AVX-512-F * Supports AVX-512 Foundation instructions AVX-512-DQ * Supports AVX-512 double and quadword instructions AVX-512-IFAMA * Supports AVX-512 integer Fused multiply-add instructions AVX-512-PF - Supports AVX-512 prefetch instructions AVX-512-ER - Supports AVX-512 exponential and reciprocal instructions AVX-512-CD * Supports AVX-512 conflict detection instructions AVX-512-BW * Supports AVX-512 byte and word instructions AVX-512-VL * Supports AVX-512 vector length instructions FMA * Supports FMA extensions using YMM state MSR * Implements RDMSR/WRMSR instructions MTRR * Supports Memory Type Range Registers XSAVE * Supports XSAVE/XRSTOR instructions OSXSAVE * Supports XSETBV/XGETBV instructions RDRAND * Supports RDRAND instruction RDSEED * Supports RDSEED instruction CMOV * Supports CMOVcc instruction CLFSH * Supports CLFLUSH instruction CX8 * Supports compare and exchange 8-byte instructions CX16 * Supports CMPXCHG16B instruction BMI1 * Supports bit manipulation extensions 1 BMI2 * Supports bit manipulation extensions 2 ADX * Supports ADCX/ADOX instructions DCA - Supports prefetch from memory-mapped device F16C * Supports half-precision instruction FXSR * Supports FXSAVE/FXSTOR instructions FFXSR - Supports optimized FXSAVE/FSRSTOR instruction MONITOR - Supports MONITOR and MWAIT instructions MOVBE * Supports MOVBE instruction ERMSB * Supports Enhanced REP MOVSB/STOSB PCLMULDQ * Supports PCLMULDQ instruction POPCNT * Supports POPCNT instruction LZCNT * Supports LZCNT instruction SEP * Supports fast system call instructions LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode HLE - Supports Hardware Lock Elision instructions RTM - Supports Restricted Transactional Memory instructions DE * Supports I/O breakpoints including CR4.DE DTES64 - Can write history of 64-bit branch addresses DS - Implements memory-resident debug buffer DS-CPL - Supports Debug Store feature with CPL PCID * Supports PCIDs and settable CR4.PCIDE INVPCID * Supports INVPCID instruction PDCM - Supports Performance Capabilities MSR RDTSCP * Supports RDTSCP instruction TSC * Supports RDTSC instruction TSC-DEADLINE * Local APIC supports one-shot deadline timer TSC-INVARIANT * TSC runs at constant rate xTPR - Supports disabling task priority messages EIST - Supports Enhanced Intel Speedstep ACPI - Implements MSR for power management TM - Implements thermal monitor circuitry TM2 - Implements Thermal Monitor 2 control APIC * Implements software-accessible local APIC x2APIC * Supports x2APIC CNXT-ID - L1 data cache mode adaptive or BIOS MCE * Supports Machine Check, INT18 and CR4.MCE MCA * Implements Machine Check Architecture PBE - Supports use of FERR#/PBE# pin PSN - Implements 96-bit processor serial number PREFETCHW * Supports PREFETCHW instructionIf we compare between both, the result will be like below. As you can see, most of the CPU Instructions not available to the guest are mainly important for the Host OS only, such as Debug, Monitor, and Power Management.
MONITOR - Supports MONITOR and MWAIT instructions DTES64 - Can write history of 64-bit branch addresses DS - Implements memory-resident debug buffer PDCM - Supports Performance Capabilities MSR xTPR - Supports disabling task priority messages EIST - Supports Enhanced Intel Speedstep ACPI - Implements MSR for power management TM - Implements thermal monitor circuitry TM2 - Implements Thermal Monitor 2 control PBE - Supports use of FERR#/PBE# pinFor Windows 11 Sandbox, strangely enough, the differences are slightly difference with Hyper-V guest.
HTT * Hyperthreading enabled CET * Supports Control Flow Enforcement Technology Kernel CET - Kernel-mode CET Enabled User CET * User-mode CET Allowed HYPERVISOR * Hypervisor is present VMX - Supports Intel hardware-assisted virtualization SVM - Supports AMD hardware-assisted virtualization X64 * Supports 64-bit mode SMX - Supports Intel trusted execution SKINIT - Supports AMD SKINIT SGX - Supports Intel SGX NX * Supports no-execute page protection SMEP * Supports Supervisor Mode Execution Prevention SMAP * Supports Supervisor Mode Access Prevention PAGE1GB * Supports 1 GB large pages PAE * Supports > 32-bit physical addresses PAT * Supports Page Attribute Table PSE * Supports 4 MB pages PSE36 * Supports > 32-bit address 4 MB pages PGE * Supports global bit in page tables SS * Supports bus snooping for cache operations VME * Supports Virtual-8086 mode RDWRFSGSBASE * Supports direct GS/FS base access FPU * Implements i387 floating point instructions MMX * Supports MMX instruction set MMXEXT - Implements AMD MMX extensions 3DNOW - Supports 3DNow! instructions 3DNOWEXT - Supports 3DNow! extension instructions SSE * Supports Streaming SIMD Extensions SSE2 * Supports Streaming SIMD Extensions 2 SSE3 * Supports Streaming SIMD Extensions 3 SSSE3 * Supports Supplemental SIMD Extensions 3 SSE4a - Supports Streaming SIMDR Extensions 4a SSE4.1 * Supports Streaming SIMD Extensions 4.1 SSE4.2 * Supports Streaming SIMD Extensions 4.2 AES * Supports AES extensions AVX * Supports AVX instruction extensions AVX2 * Supports AVX2 instruction extensions AVX-512-F * Supports AVX-512 Foundation instructions AVX-512-DQ * Supports AVX-512 double and quadword instructions AVX-512-IFAMA * Supports AVX-512 integer Fused multiply-add instructions AVX-512-PF - Supports AVX-512 prefetch instructions AVX-512-ER - Supports AVX-512 exponential and reciprocal instructions AVX-512-CD * Supports AVX-512 conflict detection instructions AVX-512-BW * Supports AVX-512 byte and word instructions AVX-512-VL * Supports AVX-512 vector length instructions FMA * Supports FMA extensions using YMM state MSR * Implements RDMSR/WRMSR instructions MTRR * Supports Memory Type Range Registers XSAVE * Supports XSAVE/XRSTOR instructions OSXSAVE * Supports XSETBV/XGETBV instructions RDRAND * Supports RDRAND instruction RDSEED * Supports RDSEED instruction CMOV * Supports CMOVcc instruction CLFSH * Supports CLFLUSH instruction CX8 * Supports compare and exchange 8-byte instructions CX16 * Supports CMPXCHG16B instruction BMI1 * Supports bit manipulation extensions 1 BMI2 * Supports bit manipulation extensions 2 ADX * Supports ADCX/ADOX instructions DCA - Supports prefetch from memory-mapped device F16C * Supports half-precision instruction FXSR * Supports FXSAVE/FXSTOR instructions FFXSR - Supports optimized FXSAVE/FSRSTOR instruction MONITOR - Supports MONITOR and MWAIT instructions MOVBE * Supports MOVBE instruction ERMSB * Supports Enhanced REP MOVSB/STOSB PCLMULDQ * Supports PCLMULDQ instruction POPCNT * Supports POPCNT instruction LZCNT * Supports LZCNT instruction SEP * Supports fast system call instructions LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode HLE - Supports Hardware Lock Elision instructions RTM - Supports Restricted Transactional Memory instructions DE * Supports I/O breakpoints including CR4.DE DTES64 - Can write history of 64-bit branch addresses DS - Implements memory-resident debug buffer DS-CPL - Supports Debug Store feature with CPL PCID * Supports PCIDs and settable CR4.PCIDE INVPCID * Supports INVPCID instruction PDCM * Supports Performance Capabilities MSR RDTSCP * Supports RDTSCP instruction TSC * Supports RDTSC instruction TSC-DEADLINE - Local APIC supports one-shot deadline timer TSC-INVARIANT - TSC runs at constant rate xTPR - Supports disabling task priority messages EIST - Supports Enhanced Intel Speedstep ACPI - Implements MSR for power management TM - Implements thermal monitor circuitry TM2 - Implements Thermal Monitor 2 control APIC * Implements software-accessible local APIC x2APIC * Supports x2APIC CNXT-ID - L1 data cache mode adaptive or BIOS MCE * Supports Machine Check, INT18 and CR4.MCE MCA * Implements Machine Check Architecture PBE - Supports use of FERR#/PBE# pin PSN - Implements 96-bit processor serial number PREFETCHW * Supports PREFETCHW instruction
For the information above, it seems like Hyper-V exposes almost all the important CPU Instructions to the guest OS without any configuration which is difference with VirtualBox such as what mentioned on the Stack Overflow link below on quite many users find it difficult to enable AVX CPU Instructions.
How to enable AVX / AVX2 in VirtualBox 6.1.16 with Ubuntu 20.04 64bit?
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