src/hotspot/cpu/x86/vm_version_x86.hpp

*** 87,97 ****
                          : 1,
                 aes      : 1,
                          : 1,
                 osxsave  : 1,
                 avx      : 1,
!                         : 3;
      } bits;
    };
  
    union StdCpuid1Edx {
      uint32_t value;
--- 87,98 ----
                          : 1,
                 aes      : 1,
                          : 1,
                 osxsave  : 1,
                 avx      : 1,
!                         : 2,
!                hv       : 1;
      } bits;
    };
  
    union StdCpuid1Edx {
      uint32_t value;
*** 346,355 ****
--- 347,357 ----
  #define CPU_FLUSH             ((uint64_t)UCONST64( 0x20000000000)) // flush instruction
  #define CPU_FLUSHOPT          ((uint64_t)UCONST64( 0x40000000000)) // flushopt instruction
  #define CPU_CLWB              ((uint64_t)UCONST64( 0x80000000000)) // clwb instruction
  #define CPU_AVX512_VBMI2      ((uint64_t)UCONST64(0x100000000000)) // VBMI2 shift left double instructions
  #define CPU_AVX512_VBMI       ((uint64_t)UCONST64(0x200000000000)) // Vector BMI instructions
+ #define CPU_HV_PRESENT        ((uint64_t)UCONST64(0x400000000000)) // for hypervisor detection
  
  // NB! When adding new CPU feature detection consider updating vmStructs_x86.hpp, vmStructs_jvmci.hpp, and VM_Version::get_processor_features().
  
  enum Extended_Family {
      // AMD
*** 578,587 ****
--- 580,591 ----
            result |= CPU_AVX512_VBMI;
          if (_cpuid_info.sef_cpuid7_ecx.bits.avx512_vbmi2 != 0)
            result |= CPU_AVX512_VBMI2;
        }
      }
+     if (_cpuid_info.std_cpuid1_ecx.bits.hv != 0)
+       result |= CPU_HV_PRESENT;
      if (_cpuid_info.sef_cpuid7_ebx.bits.bmi1 != 0)
        result |= CPU_BMI1;
      if (_cpuid_info.std_cpuid1_edx.bits.tsc != 0)
        result |= CPU_TSC;
      if (_cpuid_info.ext_cpuid7_edx.bits.tsc_invariance != 0)
*** 869,878 ****
--- 873,883 ----
    static bool supports_avx512_vpclmulqdq() { return (_features & CPU_AVX512_VPCLMULQDQ) != 0; }
    static bool supports_avx512_vaes()       { return (_features & CPU_AVX512_VAES) != 0; }
    static bool supports_avx512_vnni()       { return (_features & CPU_AVX512_VNNI) != 0; }
    static bool supports_avx512_vbmi()       { return (_features & CPU_AVX512_VBMI) != 0; }
    static bool supports_avx512_vbmi2()      { return (_features & CPU_AVX512_VBMI2) != 0; }
+   static bool supports_hv()                { return (_features & CPU_HV_PRESENT) != 0; }
  
    // Intel features
    static bool is_intel_family_core() { return is_intel() &&
                                         extended_cpu_family() == CPU_FAMILY_INTEL_CORE; }
  
*** 1021,1030 ****
    static bool supports_clwb() { return false; }
  #endif // _LP64
  
    // support functions for virtualization detection
   private:
-   static void check_virt_cpuid(uint32_t idx, uint32_t *regs);
    static void check_virtualizations();
  };
  
  #endif // CPU_X86_VM_VERSION_X86_HPP
--- 1026,1034 ----