src/hotspot/cpu/x86/vm_version_x86.hpp

@@ -87,11 +87,12 @@
                         : 1,
                aes      : 1,
                         : 1,
                osxsave  : 1,
                avx      : 1,
-                        : 3;
+                        : 2,
+               hv       : 1;
     } bits;
   };
 
   union StdCpuid1Edx {
     uint32_t value;

@@ -346,10 +347,11 @@
 #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

@@ -578,10 +580,12 @@
           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)

@@ -869,10 +873,11 @@
   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; }
 

@@ -1021,10 +1026,15 @@
   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_virt_cpuid(uint32_t *regs);
   static void check_virtualizations();
+
+#ifdef _WINDOWS
+  static bool is_in_VM();
+#endif
+
 };
 
 #endif // CPU_X86_VM_VERSION_X86_HPP